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The Magic of Organocatalytic Synergism in Switchable Polymerization:One-pot Synthesis of Block Copolymers with Programmable Sequences and Compositions 认领 引用
1
作者 Shuai-Shuai Zhu Mao-Ji Zhao +1 位作者 Ying-Jie Yuan Yong Wang 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第1期68-78,I0010,共11页
Switchable polymerization is emerging as a powerful tool to construct block copolymers directly from mixtures of monomers.However,current achievements typically iterate between two polymerization cycles to afford prod... Switchable polymerization is emerging as a powerful tool to construct block copolymers directly from mixtures of monomers.However,current achievements typically iterate between two polymerization cycles to afford products with fixed sequences and compositions.Herein,we report the triethylborane/1,8-diazabicyclo[5.4.0]undec-7-ene(Et_3B/DBU)pair-mediated four-component switchable polymerization of propylene oxide(PO),CO2,phthalic anhydride(PA),and racemic lactide(rac-LA),which enables the on-demand synthesis of four different block copolymers,i.e.,poly(propylene phthalate)-b-polylactide(PPE-b-PLA),PPE-b-PLA-b-poly(propylene carbonate)(PPC),PPE-b-PPC-b-PLA,and PPE-b-PPCb-poly(propylene oxide)(PPO),through rationally modulating the Lewis pair(LP)ratio.Core to this protocol is that increasing the loading of Et3B accelerates the ring-opening of PO while impeding the reactivity of rac-LA,thus allowing for fine-tuning of the thermodynamic and kinetic of the switchable polymerization.Therefore,the four polymerization cycles involving PO/PA ring-opening copolymerization(ROCOP),PO/CO2 ROCOP,rac-LA ring-opening polymerization(ROP),and PO ROP can be connected and discriminated in precisely programmed manners. 展开更多
关键词 Switchable polymerization Organic Lewis pair Block copolymers Ring-opening copolymerization Multicomponent reaction
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Engineering repairable nanoporous functional coatings on arbitrary substrates by manipulating phase behaviors of block copolymers 认领 引用
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作者 Jiemei Zhou Xiang Ying +3 位作者 Daiwen Li Mingjie Wei Xiangyue Ye Yong Wang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第1期36-46,共11页
Nanoporous polymers are extensively coated on various substrates to deliver optical,permselective,or other functions.However,it remains desired to fast produce uniform nanoporous polymer coatings on substrates with co... Nanoporous polymers are extensively coated on various substrates to deliver optical,permselective,or other functions.However,it remains desired to fast produce uniform nanoporous polymer coatings on substrates with complex surfaces.Herein,by manipulating the interactions between block copolymers and selective solvents,we prepare repairable nanoporous polymers on arbitrary substrates.This is realized by an extremely simple sequential coating process:sequential coating of block copolymers and their swelling agents on substrate surfaces.The swelling agents are comprised of two solvents that swell the constituent blocks of the copolymers to different degrees,rapidly producing polymer coatings with uniform,interconnected,sub-50 nm pores.This sequential coating process is able to conformally build nanoporous polymers on nonplanar substrates with large lateral sizes and complex surface features,and also to in situ repair defects arising during usages.We further demonstrate that the nanoporous coatings show excellent antireflective and membrane separation performances.This sequential coating process is dictated by polymer–solvent interactions,and is expected to find applications in diverse fields for its simplicity,adaptability,and the capability to produce well-defined nanoporosities. 展开更多
关键词 Nanoporous coating Block copolymers Selective swelling Polymer-solvent interactions Antireflection
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Engineering stimuli-responsive block copolymers for multimodal bioimaging 认领 引用
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作者 Lizhuang Zhong Ming Liu +3 位作者 Shilong Su Dongxin Zeng Jing Hu Zhiqian Guo 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第1期116-124,共9页
The diagnostic efficacy of contemporary bioimaging technologies remains constrained by inherent limitations of conventional imaging agents,including suboptimal sensitivity,off-target biodistribution,and inherent cytot... The diagnostic efficacy of contemporary bioimaging technologies remains constrained by inherent limitations of conventional imaging agents,including suboptimal sensitivity,off-target biodistribution,and inherent cytotoxicity.These limitations have catalyzed the development of intelligent stimuli-responsive block copolymers-based bioimaging agents,which was engineered to dynamically respond to endogenous biochemical cues(e.g.,p H gradients,redox potential,enzyme activity,hypoxia environment) or exogenous physical triggers(e.g.,photoirradiation,thermal gradients,ultrasound(US)/magnetic stimuli).Through spatiotemporally controlled structural transformations,stimuli-responsive block copolymers enable precise contrast targeting,activatable signal amplification,and theranostic integration,thereby substantially enhancing signal-to-noise ratios of bioimaging and diagnostic specificity.Hence,this mini-review systematically examines molecular engineering principles for designing p H-,redox-,enzyme-,light-,thermo-,and US/magnetic-responsive polymers,with emphasis on structure-property relationships governing imaging performance modulation.Furthermore,we critically analyze emerging strategies for optical imaging,US synergies,and magnetic resonance imaging(MRI).Multimodal bioimaging has also been elaborated,which could overcome the inherent trade-offs between resolution,penetration depth,and functional specificity in single-modal approaches.By elucidating mechanistic insights and translational challenges,this mini-review aims to establish a design framework of stimuli-responsive block copolymersbased for high fidelity bioimaging agents and accelerate their clinical translation in precise diagnosis and therapy. 展开更多
关键词 Stimuli-responsive Block copolymers Molecular engineering Multimodal bioimaging Diagnosis and therapy
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Core Structure Modulation of 2D Nanosheets by Selective Crystallization-driven Self-assembly of Polyhedral Oligomeric Silsesquioxane-containing Block Copolymers 认领 引用
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作者 Cheng-Yang Hong Kun Yu +3 位作者 Heng-Zhi You Wei Tian Qing-Yun Guo Hao Liu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第7期2294-2304,共11页
Self-assembly of block copolymers(BCPs)into well-defined nanostructures has emerged as a powerful strategy for tailoring material properties across diverse applications.Crystallization-driven self-assembly(CDSA)has be... Self-assembly of block copolymers(BCPs)into well-defined nanostructures has emerged as a powerful strategy for tailoring material properties across diverse applications.Crystallization-driven self-assembly(CDSA)has been particularly effective in constructing hierarchical nanostructures with precise control over size,morphology,and functionality.Polyhedral oligomeric silsesquioxane(POSS)cages,known for their unique chemical and physical properties,have recently been used to create hybrid POSS-containing polymers,which show different crystallization mechanisms from the folded-chain model of conventional polymers.In this study,we designed and synthesized two hybrid block copolymers by covalently attaching a crystalline POSS-containing polymer segment(exact four repeating units,BP4)to poly(ethylene oxide)(PEO)or poly(methyl methacrylate)(PMMA),affording BP4-PEO and BP4-PMMA,respectively.We systematically investigated the CDSA behavior of these hybrid block copolymers under various conditions using the self-seeding and direct cooling methods.Our findings demonstrate the potential for selective CDSA of either the BP4 segment or the PEO block in BP4-PEO,leading to a similar nanosheet morphology and distinct core crystal structures.Monocrystalline BP4-PMMA exclusively forms BP4-crystallized nanosheets owing to the amorphous nature of PMMA under the given conditions.The dimensions of self-assembled 2D nanostructures can be tuned by varying the cooling rate and initial concentration.This work provides insights into programmable crystallization pathways in hybrid block copolymers and highlights the potential for designing advanced functional nanomaterials with tailored morphologies and properties. 展开更多
关键词 Crystallization-driven self-assembly Polyhedral oligomeric silsesquioxane-containing polymer Nanosheets Structure modulation Block copolymer
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Accelerating Field-based Simulations of Block Copolymers by Exploring Symmetry of Chain Architectures 认领 引用
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作者 Jun-Yang Liu Yu-Chen Zhang Yi-Xin Liu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第5期1553-1561,I0018,共9页
Recent advances in polymer synthesis have enabled the creation of block copolymers with increasingly complex chain architectures,presenting exciting opportunities for novel materials design.However,elucidating and exp... Recent advances in polymer synthesis have enabled the creation of block copolymers with increasingly complex chain architectures,presenting exciting opportunities for novel materials design.However,elucidating and exploring their intricate mesophase behavior calls for highly efficient computational tools.Building upon recent developments in optimizing propagator computations for branched polymers,such as dynamic programming approaches and extensions of comb polymer methods,we introduce a novel topology-driven acceleration algorithm specifically designed for graph-enhanced field-based simulations(FBS)of block copolymers.Unlike prior methods focused on specific redundancies,our approach leverages graph isomorphism for topological decomposition,enabling systematic handling of symmetries in arbitrary architectures.Comprehensive benchmark tests on diverse complex architectures,including miktoarm star polymers and dendrimers,demonstrate significant computational speed-ups across a wide range of ordered phases.The acceleration algorithm not only enables rapid exploration of vast parameter spaces for complex block copolymer systems with self-consistent field theory(SCFT)simulations but also maintains full compatibility with sampling-based field-theoretical simulations(FTS),facilitating broader applicability in computational polymer science. 展开更多
关键词 Block copolymers Self-consistent field theory Graph theory Graph isomorphism
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Growth-Directing Nanostructured Interfaces via Block Copolymer-Templated Au Nanoseed Arrays for Stabilized Zinc Anodes in Lean-Zinc Batteries 认领 引用
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作者 Dong Won Hae Hoseok Lee +10 位作者 Hyeong Jun Kook Ga Hee Kim Saehun Kim Jaecheol Choi Min Pyeong Kim Seok Hun Kang Won Jun Lee Young-Gi Lee Hyeong Min Jin Jongsoon Kim Dong Ok Shin 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第10期601-623,共23页
Achieving dendrite-free and highly reversible Zn anodes remains a critical challenge for realizing high-performance aqueous Zn-ion batteries(AZIBs).Here,we report a rationally designed nanoscale interfacial architectu... Achieving dendrite-free and highly reversible Zn anodes remains a critical challenge for realizing high-performance aqueous Zn-ion batteries(AZIBs).Here,we report a rationally designed nanoscale interfacial architecture,constructed via sequential assembly of a reduced graphene oxide(rGO)nanolayer and solvent-annealed block copolymer(BCP)-templated Au nanoseed arrays,that enables spatially uniform Zn nucleation and planar plating,yielding highly stable,dendrite-free Zn anodes with minimal excess Zn.The synergistic integration of zincophilic Au nanoseeds on rGO,which energetically favor Zn(002)nucleation,effectively suppresses parasitic reactions and directs preferentially oriented Zn growth,yielding macroscopically uniform Zn plating with an exceptionally high(002)relative texture coefficient(RTC)of 88.2%.Combined experimental and theoretical investigations reveal that the homogeneous Zn2+flux and substrate-induced texture development at the Au nanoseed-rGO interface(AGI)are critical for directing initial Zn nucleation and sustaining planar growth.The plated Zn on AGI(Zn@AGI)delivers exceptional cycling stability(>3000 h at 1 mA cm-2,10%DOD)and excellent performance under high-DOD conditions.Moreover,full cells incorporating Zn@AGI achieve a remarkably high energy density of 156.1 Wh kg-1 full electrode under an ultralow N/P ratio of 2.This work presents a strategic interfacial approach toward stable and practical AZIBs. 展开更多
关键词 Aqueous zinc-ion battery Block copolymer template Au nanoseed Plated zinc anode
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Star-shaped Block Copolymers of Poly-2-alkyl-5,6-dihydrooxazines:Synthesis,Conformational Characteristics,Thermoresponsiveness and Complexation with Curcumin 认领 引用
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作者 Tatyana U.Kirila Serafim V.Rodchenko +2 位作者 Nina D.Kozina Andrey V.Tenkovtsev Alexander P.Filippov 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第2期423-436,I0012,共14页
Star-shaped six-arm polymers with hexaaza[26]orthoparacyclophane core and arms of block copolymers of poly-2-ethyl-5,6-dihydrooxazine with poly-2-isopropyl-5,6-dihydrooxazine were synthesized successfully using cat... Star-shaped six-arm polymers with hexaaza[26]orthoparacyclophane core and arms of block copolymers of poly-2-ethyl-5,6-dihydrooxazine with poly-2-isopropyl-5,6-dihydrooxazine were synthesized successfully using cationic ring-opening polymerization.The ratio of blocks,the order of their attachment to the core,and arm length were varied.Conformation of synthesized stars was determined by methods of molecular hydrodynamics and optics.It has been shown that star-shaped molecules were characterized by high intramolecular density,and the arm folding increased with their lengthening.The influence of the structure of block copolymers and their molar mass on the critical micelle concentration has been established.Complexes of synthesized star-shaped block copolymers with curcumin were obtained and the efficient binding of curcumin to polymer molecules was demonstrated.The behavior of the aqueous solutions of the prepared polymer stars and their complexes with curcumin was investigated by light scattering and turbidimetry methods.The influence of the structure and molar mass of star polymers on their thermoresponsiveness and the phase separation temperatures in aqueous solutions was analyzed.A slight increase in the phase separation temperature was found on passage from polymer solutions to solutions of polymer complexes with hydrophobic curcumin. 展开更多
关键词 Thermoresponsive star-shaped polymers Block copolymer of poly-2-alkyl-5 6-dihydrooxazine Aqueous solutions Complex of polymer with curcumin Phase separation
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STUDY ON SOME PROPERTIEE OF Si-CONTAINING POLYESTER-POLYETHER MULTIBLOCK COPOLYMERS 认领 引用
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作者 李贞宜 朱锦 《Chinese Journal of Polymer Science》 SCIE EI CAS 1997年第4期289-294,共6页
Some physical properties of the polyester-polyeher multiblock copolymers with Si-containing hard segment were further examined by a series of physical methods. Thehydrophobicity of the copolymers was improved with the... Some physical properties of the polyester-polyeher multiblock copolymers with Si-containing hard segment were further examined by a series of physical methods. Thehydrophobicity of the copolymers was improved with the incorporation of increasing amountof organosilicone, XPS test proved that silicon element was enriched at the surface of theSi-containing polyeser-polyether copolymers. It was also found that their heat resistanceand gas permeability for O_2 and N_2 were greatly improved. The study on semipermeabilityof films made of the Si-containing copolymers was also followed with interest. 展开更多
关键词 Polyester-polyether copolymers Organosilicon modification
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Mechanochromism of a Perylene Diimide Derivative-Doped Styrene-Butadiene-Styrene Block Copolymer 认领 引用
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作者 MUHAMMAD Arslan CHEN Jia +5 位作者 LIAO Zuogui ZHAO Haoru GU Dandan XIANG Yangshuang JIANG Xiaoze SUN Bin 《Journal of Donghua University(English Edition)》 CAS 2025年第3期251-258,共8页
Mechanochromic materials respond to external stimuli and provide early warnings of material damage.Perylene diimide(PDI)-based materials have attracted attention because of their outstanding fluorescence performance.H... Mechanochromic materials respond to external stimuli and provide early warnings of material damage.Perylene diimide(PDI)-based materials have attracted attention because of their outstanding fluorescence performance.However,the application of PDI in mechanochromism is limited by the difficulty for mechanical forces to disrupt the aggregation of PDI and its derivatives,as well as the fluorescence quenching caused by continuousπ-πstacking between PDI molecules.To eliminate the fluorescence quenching effect caused by the aggregation of PDI and broaden its application fields,polyhedral oligomeric silsesquioxane(POSS)-PDI-POSS(PPP)was screened as PDI doping.The photophysical properties of PPP in both monomeric and aggregated states in different solvents were studied.Then,PPP and styrene-butadiene-styrene block copolymer(SBS)were mixed to prepare the PPP/SBS film.The mechanochromic properties of PPP/SBS film were explored.The fluorescence emission spectra confirmed that when the PPP mass fraction increased to 0.30%,the PPP/SBS film exhibited mechanochromic behavior under uniaxial deformation due to the changes in the molecular packing. 展开更多
关键词 mechanochromism perylene diimide(PDI) styrene-butadiene-styrene block copolymer(SBS) fluorescence
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AI-driven Automated Construction of Block Copolymer Phase Diagrams 认领 引用
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作者 Qing-Shu Dong Qing-Liang Song +1 位作者 Kun Tian Wei-Hua Li 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2025年第10期1730-1738,共9页
The self-assembly of block copolymers serves as an effective approach for fabricating various periodic ordered nanostructures. By employing self-consistent field theory (SCFT) to calculate the phase diagrams of block ... The self-assembly of block copolymers serves as an effective approach for fabricating various periodic ordered nanostructures. By employing self-consistent field theory (SCFT) to calculate the phase diagrams of block copolymers, one can accurately predict their self-assembly behaviors, thus providing guidance for the fabrication of various novel structures. However, SCFT is highly sensitive to initial conditions because it finds the free energy minima through an iterative process. Consequently, constructing phase diagrams using SCFT typically requires predefined candidate structures based on the experience of researchers. Such experience-dependent strategies often miss some structures and thus result in inaccurate phase diagrams. Recently, artificial intelligence (AI) techniques have demonstrated significant potential across diverse fields of science and technology. By leveraging AI methods, it is possible to reduce reliance on human experience, thereby constructing more robust and reliable phase diagrams. In this work, we demonstrate how to combine AI with SCFT to automatically search for self-assembled structures of block copolymers and construct phase diagrams. Our aim is to realize automatic construction of block copolymer phase diagrams while minimizing reliance on human prior knowledge. 展开更多
关键词 Block copolymer Self-consistent field theory Phase diagram Artificial intelligence Bayesian optimization
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Precision Microenvironment-Driven Isothermal Annealing for the Self-Assembly of Perpendicular Block Copolymers in High-Resolution Lithography Applications 认领 引用
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作者 Xiaotong Zhao Yuanlang Hou +11 位作者 Hanxiao Lu Sisi Chen Hui Bai Hanzhe Miao Yuanyuan Guan Sibo Fu Meng Su Xiangshun Geng Ming Lei Yi Yang Yanlin Song Tian-Ling Ren 《Chinese Physics Letters》 SCIE EI CAS CSCD 2025年第11期375-382,共8页
Block copolymer(BCP) nanolithography offers potential beyond traditional photolithographic limits, yet reliably producing low-defect, perpendicular domains remains challenging. We introduce a microenvironmentdriven is... Block copolymer(BCP) nanolithography offers potential beyond traditional photolithographic limits, yet reliably producing low-defect, perpendicular domains remains challenging. We introduce a microenvironmentdriven isothermal annealing method for directed self-assembly of BCP thin films. By annealing films at stable temperature in a quasi-sealed, inert-gas chamber, our approach promotes highly uniform perpendicular lamellar nanopatterns over large areas, effectively mitigating environmental fluctuations and emulating solvent-vapor annealing without solvent exposure. Resulting BCP structures demonstrate enhanced spatial coherence and notably low defect density. Furthermore, we successfully transfer these nanopatterns into precise metal nano-line arrays,confirming the method's capability for high-fidelity pattern replication. This scalable, solvent-free technique provides a robust, reliable route for high-resolution nanopatterning in advanced semiconductor manufacturing. 展开更多
关键词 photolithographic limits isothermal annealing method mitigating environmental fluctuations e block copolymer bcp annealing films high resolution lithography isothermal annealing microenvironment driven
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Achieving Complete Photonic Band Gaps in a Low-symmetric Rectangular Cross-sectional Columnar Phase Self-assembled from Block Copolymers 认领 引用
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作者 Hai-Yan Weng Zhan-Wei Li +1 位作者 Yan-Chun Li Zhong-Yuan Lu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2025年第6期1059-1066,I0013,共8页
A significant challenge in developing block copolymer photonic crystals is constructing low-symmetric ordered phases,which are essential for achieving a complete photonic band gap.Here,we propose a promising strategy ... A significant challenge in developing block copolymer photonic crystals is constructing low-symmetric ordered phases,which are essential for achieving a complete photonic band gap.Here,we propose a promising strategy to create low-symmetric ordered morphologies by incorporating shape-anisotropic rod-like side chains into block copolymers.Using dissipative particle dynamics simulations,we demonstrate that block copolymers with longer rod-like side chains can self-assemble into a hexagonally packed columnar phase characterized by a low-symmetric rectangular cross-section.Photonic band structure calculations reveal that this low-symmetric columnar phase can exhibit a complete photonic band gap,with the gap size dependent on the aspect ratio of the rectangular cross-sections of the columns.Our findings suggest an effective approach to constructing low-symmetric photonic crystals through the self-assembly of block copolymers with shape-anisotropic segments. 展开更多
关键词 Photonic band gaps Low-symmetric phase Self-assembly Block copolymers
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Synthesis, Self-assembly and pH Sensitivity of a Novel Fluorinated Triphilic Block Copolymer 认领 引用 被引量：4
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作者 李欣欣 Xiao Huo +1 位作者 Hui-jiao Han 林绍梁 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2017年第11期1363-1372,共10页
A novel fluorinated triblock copolymer incorporating 2-ethylhexyl methacrylate （EHMA）, tert-butyl methacrylate （tBMA） and 1H,1H,2H,2H-perfluorodecyl acrylate （FA） （PEHMA-b-PtBMA-b-PFA） was first synthesized us... A novel fluorinated triblock copolymer incorporating 2-ethylhexyl methacrylate （EHMA）, tert-butyl methacrylate （tBMA） and 1H,1H,2H,2H-perfluorodecyl acrylate （FA） （PEHMA-b-PtBMA-b-PFA） was first synthesized using three successive reversible addition fragmentation chain transfer （RAFT） polymerization and the subsequent hydrolyzing at acidic condition. The as-fabricated triblock copolymer exhibited an interesting morphology evolution from the multi-compartment rod-like structure to spherical structure along with the addition of a selective solution. At the same time, a visible phase separation domain could be seen in the core area due to the existence of fluorocarbon segments. Furthermore, the self- assembly behavior of the triphilic copolymer at different pH was also verified by transmission electron microscopy, as well as the dynamic light scattering. These stimuli-responsive multi-compartment nanostructures may have potential applications in drug delivery. 展开更多
关键词 Triphilic block copolymer Self-assembly pH sensitivity Fluorinated copolymer Multi-compartment structure
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Synthesis and characteristic of double hydrophilic block copolymer with amine pendant chains 认领 引用 被引量：2
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作者 Yue Jun Zhu Ye Bang Tan +2 位作者 Xu Du Ji Cheng Piao Qi Feng Zhou 《Chinese Chemical Letters》 SCIE CAS 2008年第3期355-358,共4页
Novel double hydrophilic block copolymers with amine pendant chains were synthesized by polymerization of 4-vinyl benzylamine hydrochloric salt using 4,4′-azo-bis[4-cyanopentanoate poly（ethylene glycol） ester] as m... Novel double hydrophilic block copolymers with amine pendant chains were synthesized by polymerization of 4-vinyl benzylamine hydrochloric salt using 4,4′-azo-bis[4-cyanopentanoate poly（ethylene glycol） ester] as macroazoinitiator. The structures of the copolymers were characterized by ^1H NMR, FTIR spectra and acid-base titration, GPC-MALS techniques. 展开更多
关键词 Polyamine Macroazoinitiator Double hydrophilic block copolymer
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Macroscopic Regulation of Hierarchical Nanostructures in Liquid-crystalline Block Copolymers towards Functional Materials 认领 引用 被引量：6
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作者 Feng Cai Yu-Xuan Chen +1 位作者 Wen-Zhong Wang Hai-Feng Yu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2021年第4期397-416,I0004,共20页
The great potential of liquid-crystalline block copolymers(LCBCs)containing photoresponsive mesogens toward novel applications in photonics and nanotechnology has been attracting increasing attention,due to the combin... The great potential of liquid-crystalline block copolymers(LCBCs)containing photoresponsive mesogens toward novel applications in photonics and nanotechnology has been attracting increasing attention,due to the combination of the inherent property of microphase separation of block copolymers and the hierarchically-assembled structures of liquid-crystalline polymers(LCPs).The periodically ordered nanostructures in bulk film of LCBCs can be acquired by supramolecular cooperative motion,derived from the interaction between liquid-crystalline elastic deformation and microphase separation,which are able to improve physical properties of polymer film toward advanced functional applications.Moreover,various microano-patterned structures have been fabricated via light manipulation of photoresponsive LCBCs with good reproducibility and mass production.Thanks to recent developments in synthesis and polymerization techniques,diverse azobenzene-containing LCBCs have been designed,resulting in the creation of a wide variety of novel functions.This review illustrates recent progresses in macroscopic regulation of hierarchical nanostructures in LCBCs towards functional materials.The existing challenges are also discussed,showing perspectives for future studies. 展开更多
关键词 Liquid-crystalline block copolymers Microphase separation Hierarchical nanostructures Functional materials
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PEGYLATED SINGLE-WALLED CARBON NANOTUBES WITH GELABLE BLOCK COPOLYMERS 认领 引用 被引量：2
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作者 Cheng Zhang Wen Zhu +1 位作者 Lei Gao Yong-ming Chen 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2011年第6期762-771,共10页
Functional amphiphilic block copolymer poly(ethylene glycol)-block-poly[(3-(triethoxysilyl)propyl methacrylate)-co-(1-pyrene-methyl)methacrylate],PEG113-b-P(TEPM26-co-PyMMA4),was synthesized via atom transfer radical ... Functional amphiphilic block copolymer poly(ethylene glycol)-block-poly[(3-(triethoxysilyl)propyl methacrylate)-co-(1-pyrene-methyl)methacrylate],PEG113-b-P(TEPM26-co-PyMMA4),was synthesized via atom transfer radical polymerization(ATRP)initiated by monomethoxy capped poly(ethylene glycol)bromoisobutyrate.This polymer exhibited strong ability to disperse and exfoliate single-walled carbon nanotubes(SWNTs)in different solvents due to the adhesion of pyrene units to surface of SWNTs.In aqueous solution,the PTEPM segments that were located on the nanotube surfaces with the pyrene units could be gelated and,as a result,the silica oxide networks with PEG coronas were formed on the surface of nanotubes,which ensured the composites with a good dispersibility and stability.Furthermore,functional silane coupling agents,3-mereaptopropyltrimethoxysilane and 3-aminopropyltriethoxysilane,were introduced during dispersion of SWNTs using the block copolymers.They were co-gelated with PTEPM segments,and the--SH and--NH2 functionalities were introduced into the silica oxide coats respectively. 展开更多
关键词 Amphiphilic block copolymer Functionality PEGylated Single-walled carbon nanotubes
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Novel,tadpole-shaped,polyhedral oligomeric silsesquioxane containing sulfonated block copolymer for humidity sensing 认领 引用 被引量：2
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作者 Fang Chen Jiayu Yang +2 位作者 Rong Cai Mengfei Qi Xiaoyan Ma 《Chinese Chemical Letters》 SCIE CAS CSCD 2020年第8期2119-2124,共6页
Due to the"trade-off"effect between the high water adsorption and low stability under high Relative Humidity of polymer matrix,fabrication of resistive-type polymer-based humidity sensors with a wide impedan... Due to the"trade-off"effect between the high water adsorption and low stability under high Relative Humidity of polymer matrix,fabrication of resistive-type polymer-based humidity sensors with a wide impedance response and excellent stability in high relative humidity remains a great challenge.Aim at solving that,a novel polymeric humidity sensing matrix,specifically a tadpole-shaped,polyhedral oligomeric silsesquioxane(POSS)containing block copolymers(BCPs)of POSS-poly(methyl methacrylate)-poly styrene(POSS-PMMA-SPS)were proposed.This novel BCP was synthesized using atom transfer radical polymerization(ATRP)employing a two-step approach,and following post sulfonation,a series of sulfonated BCPs(POSS-PMMA-SPS)with different sulfonation degree was obtained.The subject humidity sensors were produced using different sulfonated BCPs employing a dip-coating technique,and three wide-impedance response humidity sensors were produced.Each of these sensors exhibited an excellent humidity-sensing response of mo re than 104 within the humidity range from 11%to 95%RH.In particular,the humidity sensor S-6 that had a proper degree of sulfonation presented a relatively fast response(t90%of 11 s and 80 s in both the water adsorption and desorption processes),and superior repeatability for more than 30 days. 展开更多
关键词 POSS containing block copolymer Tadpole-shaped Humidity sensor Sulfonation degree Wide impedance response
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Significantly Improved Stereocomplexation Ability in Cyclic Block Copolymers 认领 引用 被引量：2
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作者 Qian Zhu Zhi-Ping Zhou +1 位作者 Tong-Fan Hao Yi-Jing Nie 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2023年第3期432-441,I0009,共10页
Stereocomplex crystallization in cyclic polymer blend and cyclic block copolymers was investigated by means of dynamic Monte Carlo simulations.Five polymer systems(linear polymer blend,linear diblock copolymer,cyclic ... Stereocomplex crystallization in cyclic polymer blend and cyclic block copolymers was investigated by means of dynamic Monte Carlo simulations.Five polymer systems(linear polymer blend,linear diblock copolymer,cyclic polymer blend,cyclic diblock copolymer and tetrablock copolymer)were established.It was interestingly found that the cyclic polymer blend exhibited the weakest stereocomplexation ability,while the two cyclic block copolymers showed stronger stereocomplexation ability than the linear diblock copolymer.This abnormal improved stereocomplexation ability of the cyclic block copolymers can be attributed to the synergy between the ring chain topology and the block copolymer structure.Compared with the linear block copolymers,the ring chain topology confined segmental motions of cyclic polymer chains to smaller regions,and then the segments belonging to the different blocks in the cyclic block copolymers have more chance to contact with each other.In this way,the cyclic block copolymers had better miscibility between segments belonging to different types of blocks,leading to the stronger stereocomplexation ability. 展开更多
关键词 Monte Carlo simulation Stereocomplex crystallization Ring chain topology Cyclic block copolymers
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Cyclodextrin-functionalized Ordered Porous Block Copolymer Films: Preparation and Property 认领 引用 被引量：2
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作者 Jing Dang Yuan-Wei Su Wei Tian 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2018年第1期34-42,共9页
Ordered porous block copolymer films（PBCFs） have attracted much attention because of their potential applications in several fields. In this paper, we first reported a non-destructive, controllable, and efficient ap... Ordered porous block copolymer films（PBCFs） have attracted much attention because of their potential applications in several fields. In this paper, we first reported a non-destructive, controllable, and efficient approach for preparation of β-cyclodextrin（β-CD）-functionalized PBCFs（β-CD-PBCFs）. The key point of the approach is to incorporate β-CD units into the hydrophilic segment of amphiphilic block copolymers before the preparation of films. β-CD-PBCFs with structural integrity and controllable pore parameters were fabricated through combining of self-assembly and breath figure methods. And then, the effective adsorption capacity of β-CD-PBCFs toward Congo red was confirmed through UV-Vis spectroscopy and was found to be affected by β-CD content and solution p H values. Adsorption kinetic results showed that the adsorption behavior of β-CD-PBCFs was consistent with the pseudo-second-order kinetic model and the chemisorption mechanism. 展开更多
关键词 Porous block copolymer film β-Cyclodextrin Breath figure Self-assembly
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Photocrosslinkable Polynorbornene-based Block Copolymers with Enhanced Dielectric and Thermal Properties 认领 引用 被引量：1
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作者 hui-jing han sha zhang +3 位作者 ru-yi sun jian-hua wu 谢美然 廖小娟 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2016年第3期378-389,共12页
Block copolymers poly（endo-N-3,5-bis（trifluoromethyl）biphenyl-norbornene-pyrrolidine）-block-poly（exo-N-（cinnamoyloxyethyl）-7-oxanorborn-5-ene-2,3-dicarboximide）（endo-PTNP-b-exo-PCONBI） and poly（exo-N-3,5-bi... Block copolymers poly（endo-N-3,5-bis（trifluoromethyl）biphenyl-norbornene-pyrrolidine）-block-poly（exo-N-（cinnamoyloxyethyl）-7-oxanorborn-5-ene-2,3-dicarboximide）（endo-PTNP-b-exo-PCONBI） and poly（exo-N-3,5-bis（trifluoromethyl）biphenyl-norbornene-pyrrolidine）-block-poly（exo-N-（cinnamoyloxyethyl）-7-oxanorborn-5-ene-2,3-dicarboximide）（exo-PTNP-b-exo-PCONBI） were synthesized by ring-opening metathesis polymerization. The endo- or exoPTNP served as the high dielectric functional chain, and exo-PCONBI acted as the crosslinking segment. The endo-PTNPb-exo-PCONBI, in which endo-PTNP has a high content of trans double bond and adopts isotactic configuration, shows a dielectric constant（？） of 15.5, whereas exo-PTNP-b-exo-PCONBI, in which exo-PTNP has 67% trans double bonds and atactic microstructure, displays relatively low ？ of 7.1. The cinnamate groups in exo-PCONBI were crosslinked to form three-dimensional network by cycloaddition reaction under UV irradiation. Exposed to UV-light for 10 min, the cinnamate group in polymer films has a crosslinking conversion of 36%, as determined by UV-Vis absorption measurements. By photocrosslinking, the polymer film has an increased ？ of 16.6, a dielectric loss of 0.03, an elevated glass-transition temperature of 137 ？C, and an enhanced decomposition temperature of 405 ？C, compared to those of polymer films without irradiation. 展开更多
关键词 ROMP Block copolymer Photocrosslinking Thermal stability Dielectric performance
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