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Alternatingly stacked thin film electrodes-based compact aqueous hybrid electrochemical capacitors for hundred-volts AC line filtering 认领 引用 被引量：2
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作者 Lixia Wang Lingyu Zhao +8 位作者 Meirong Song Lixia Xie Xiaopeng Wang Xin Li Yanjie Huang Min Wei Qiu Jin Xianglong Meng Yang Zhao 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2023年第3期158-168,I0005,共11页
Filtering capacitor with compact configuration and a wide range of operating voltage has been attracting increasing attention for the smooth conversion of the electric signal in modern circuits.Lossless integration of... Filtering capacitor with compact configuration and a wide range of operating voltage has been attracting increasing attention for the smooth conversion of the electric signal in modern circuits.Lossless integration of capacitor units can be regarded as one of the efficient ways to achieve a wider voltage range,which has not yet been fully conquered due to the lack of rational designs of the electrode structure and integration technology.This study presents an alternatingly stacked assemble technology to conveniently fabricate compact aqueous hybrid integrated filtering capacitors on a large scale,in which a unit consists of rGO/MXene composite film as a negative electrode and PEDOT:PSS based film as a positive electrode.Benefiting from the synergistic effect of rGO and MXene components,and morphological characteristics of PEDOT:PSS,the capacitor unit exhibits outstanding AC line filtering with a large areal specific energy density of 1,015 μF V2cm-2(0.28 μW h cm-2) at 120 Hz.After rational integration,the assembled capacitors present compact/lightweight configuration and lossless frequency response,as reflected by almost constant resistor-capacitor time constant of 0.2 ms and dissipation factor of 15% at120 Hz,identical to those of the single capacitor unit.Apart from standing alone steadily on a flower,a small volume(only 8.1 cm3) of the integrated capacitor with 70 units connected in series achieves hundred-volts alternating current line filtering,which is superior to most reported filtering capacitors with sandwich configuration.This study provides insight into the fabrication and application of compact/ultralight filtering capacitors with lossless frequency response,and a wide range of operating voltage. 展开更多
关键词 Alternatingly stacked assembly Lossless integration Aqueous hybrid electrochemical capacitor Synergistic effect Morphological characteristics Compact Hundred-volts AC linefiltering
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Interfacial assembly and host-guest interaction of anthracene-conjugated L-glutamate dendron with cyclodextrin at the air/water interface 认领 引用 被引量：4
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作者 Long Qin Peng-Fei Duan Ming-Hua Liu 《Chinese Chemical Letters》 SCIE CAS CSCD 2014年第4期487-490,共4页
The interracial assembly of photo-induced dimerization of atypical anthracene-containing amphiphilic dendron and host-guest interaction with γ-cyclodextrin has been investigated. It has been proved that even without ... The interracial assembly of photo-induced dimerization of atypical anthracene-containing amphiphilic dendron and host-guest interaction with γ-cyclodextrin has been investigated. It has been proved that even without long alkyl chain the amphiphilic dendron could still form stable Langmuir monolayer at the air/water interface. Through the host-guest interaction,γ-cyclodextrin can be used to encapsulate two headgroups of amphiphilic dendron in the antiparallel direction. However, the formed host-guest complex was sensitive to the surface pressure. Slight compression of surface pressure led amphiphilic dendron to reassemble into nanofibers through the strong π-π stacking between headgroups. On the other hand, under in situ irradiation, the amphiphilic dendron was stabilized in the cavity of γ- cyclodextrin through headgroup dimerization and the host-guest complex further irregularly aggregated to nanoparticles. Meanwhile, γ-cyclodextrin, as a silencer, blocked the supramolecular chirality transfer. Our conclusion was demonstrated through UV/vis, FT-IR, CD spectrum and AFM images, respectively. 展开更多
关键词 Dendron γ-Cyclodextrin Host-guest complex π-π stacking Supramolecular assembly
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Design and Fabrication of Functional Hydrogels through Interfacial Engineering 认领 引用 被引量：5
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作者 Lie Chen Yong-ai Yin +2 位作者 Yu-xia Liu Ling Lin 刘明杰 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2017年第10期1181-1193,共13页
Hydrogels have drawn considerable attention in the past two decades due to their excellent biocompatibility and multi-stimuli responsiveness. They have a wide range of applications in the fields related to tissue engi... Hydrogels have drawn considerable attention in the past two decades due to their excellent biocompatibility and multi-stimuli responsiveness. They have a wide range of applications in the fields related to tissue engineering, sensors and biomedicine. Their applications are strongly influenced by the surface properties of hydrogels and the interfacial interactions between hydrogels and other substrates. In particular, the surface wettability and adhesion of hydrogels decide their applications as drug carriers and wound dressing materials. Nevertheless, there is a lack of systematic discussion on the surface functionalization strategies of hydrogels. Therefore, this review aims at summarizing the strategies of functionalizing the surfaces of hydrogels and bonding hydrogels with other solid substrates. It also explores the challenges and future perspectives of interfacial engineering of hydrogels. 展开更多
关键词 assembly bonding intermolecular aromatic stacking inherent biomedical representative Fmoc directional
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DNA Breathing at the Nanointerface:Molecular Fundamentals and Nanomaterials Applications 认领 引用 被引量：1
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作者 Feng Liu Zhiyu He +2 位作者 Tohru Takarada Mizuo Maeda Guoqing Wang 《Accounts of Materials Research》 CAS CSCD 2025年第9期1105-1119,共15页
CONSPECTUS:Apart from serving as the intrinsic carrier for genetic information,DNA plays a key role in diverse fields ranging from sensing to nanofabrication and nanodevices.Currently,these applications mainly rely on... CONSPECTUS:Apart from serving as the intrinsic carrier for genetic information,DNA plays a key role in diverse fields ranging from sensing to nanofabrication and nanodevices.Currently,these applications mainly rely on static characteristics,such as sequence programmability,hybridization capability,and chemical functionality.In addition,dynamic local DNA base pairing and unpairing within double-stranded(ds)DNA,known as DNA breathing,have recently been presenting a pivotal property with far-reaching implications beyond its transient nature.Especially,DNA breathing at the ends of dsDNA(DNA terminal breathing)has been explored at the interface between nanomaterials and has been found to act as a driving force for modulating colloidal stability,interfacial interactions,and nanoscale directed self-assembly.For a typical example,fully matched dsDNA-functionalized gold nanoparticles undergo rapid and spontaneous assembly in an aqueous medium of high ionic strength,resulting in a solution color change from red to blue.The interparticle attractive force is attributable toπ−πstacking interaction between the solution-facing terminal base pairs;this assembly mode is termed base-pair stacking assembly.In contrast,they are stably dispersed when the gold nanoparticle’s surface is functionalized with dsDNA having a single-base mismatch at the distal end.The color of the particle dispersion remains red.The unique colloidal stabilization arises from interparticle entropic repulsion caused by the micro-Brownian motion of terminal unpaired bases.These colloidal phenomena reveal a sharp contrast between the terminal single-base match and mismatch,with respect to a significant impact on interactions among nanomaterials.From the viewpoint of DNA breathing,a terminal single-base match enhances the duration time of the closing state of the dsDNA end,whereas a single-base mismatch does that of the opening state.Similar to DNA hybridization,DNA terminal breathing can be regulated by physical and chemical stimuli.Accordingly,a reversible stacking assembly is readily realized by applying external stimuli,thereby finding various applications,such as biochemical sensing,nanomaterial assembly,and nanodevice engineering.Since the working part of DNA terminal breathing-interfaced nanomaterials is localized at the periphery and limited as a few nucleotides,an advantage is provided for imparting high responsiveness to external stimuli.Our research over the past 20 years has focused on terminal breathing of dsDNA grafted to various nanomaterial surfaces.This Account describes fundamental properties and recent applications of DNA terminal breathing at the nanointerface.The interparticle stacking force working between the solution-facing DNA ends drives the colloidal behavior of DNA-functionalized nanoparticles.Since the stacking interaction significantly depends on the degree of DNA terminal breathing,external stimuli that affect the terminal base pairing/unpairing can be used to regulate the assembly/disassembly of the nanomaterials,allowing for various applications,including colorimetric chemical and biological sensing,directed self-assembly of nanomaterials,and actuation nanosystems.In future studies,the mechanism of controlling the stacking assembly by DNA terminal breathing should be elucidated in more detail by use of deep machine learning,which could lead to widely expanded and more practical applications with greater recyclability. 展开更多
关键词 nanomaterials directed self assembly local dna base pairing base pair stacking assembly interfacial interactions DNA breathing external stimuli sequence programmabilityhybridization
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