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A design strategy of ratiometric optical probe for Fe3+ions and ascorbic acid detection based on europium-doped carbon dots 认领 引用
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作者 Min Li Mingyang Han +7 位作者 Xinying Song Yiming Chen Zepeng Wu Li Guan Fenghe Wang Dawei Wang Longfeng Lv Xu Li 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第5期1415-1424,共10页
Rare-earth doped carbon dots represent a new generation of nanomaterials,which achieve the functional modulation and property optimization of carbon dots materials.In this paper,Eu3+-doped carbon dots(Eu-CDs)were p... Rare-earth doped carbon dots represent a new generation of nanomaterials,which achieve the functional modulation and property optimization of carbon dots materials.In this paper,Eu3+-doped carbon dots(Eu-CDs)were prepared employing a one-step hydrothermal approach.The structure and properties of Eu-CDs were characterized using a transmission electron microscope(TEM),X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD),Fourier transform infrared(FTIR)spectroscopy,etc.Eu-CDs exhibit a series of distinct emission peaks at 467,595,620 and 702 nm when excited at 395 nm,respectively.An“off-on”strategy for detecting of Fe3+and ascorbic acid was established on the basis of changes in luminescence peak intensity ratios of the CDs and Eu3+,which effectively reduces the detection limit compared with single-peak detection.The I467/I595 of Eu-CDs exhibits an excellent linear association with the concentrations of Fe3+or ascorbic acid,and the limit of detections are 0.15 and 0.13μmol/L,respectively,indicating that Eu-CDs can be applied for the quantitative measurement of Fe3+and ascorbic acid,and are successfully applied in real samples. 展开更多
关键词 Eu-CDs Luminescence peak intensity ratio Detection limit Fe3+ions Ascorbic acid Rare earths
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Improved electromagnetic dissipation of Fe doping LaCoO3toward broadband microwave absorption 认领 引用 被引量：24
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作者 Fan Wang Weihua Gu +4 位作者 Jiabin Chen Qianqian Huang Mingyang Han Gehuan Wang Guangbin Ji 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第10期92-100,共9页
Perovskite LaCoO3is of great potential in electromagnetic wave absorption considering its outstanding dielectric loss as well as the existing magnetic response with the magnetic doping.However,the dissipation mecha... Perovskite LaCoO3is of great potential in electromagnetic wave absorption considering its outstanding dielectric loss as well as the existing magnetic response with the magnetic doping.However,the dissipation mechanism of the magnetic doping on the microwave absorption is lack of sufficient investigated.In this paper,LaCo1-xFexO3(x=0,0.05,0.1,0.15,0.2,0.25,0.3,LCFOs)perovskites with different Fe doping amounts were prepared successfully by the sol-gel method and subsequent heat treatment in the air atmosphere.The structure characterization carried out by the frst-principles calculations shows the effect of Fe doping on the dielectric and magnetic properties of LCFOs and the strong hybridization of Co/Fe-3d with O-2p in the LCFOs system was successfully demonstrated.Particularly,when x=0.1 and the thickness is only 1.95 mm,the LaCo0.9Fe0.1O3exhibits the best microwave absorption performance with the minimum reflection loss(RL)value of about-41 dB.The typical samples achieve a broad effective absorption bandwidth(EAB)of 5.16 GHz(7.92-13.08 GHz),which covers the total X band(8-12 GHz).Considering that,the especial Fe doping perovskite is promising to be a candidate as efficient microwave absorbers. 展开更多
关键词 Perovskites LaCoO3 Magnetic doping First-principles Electromagnetic wave absorption Broad bandwidth
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Heterocyclic modified paclitaxel prodrug nanoassemblies for stimuli-responsive delivery via lysosomal escape 认领 引用
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作者 Mingyang Han Hezhen Xu +10 位作者 Jun Yuan Wenxiao Li Hao Zhang Hongkai Fang Zhiyu Kuang Yuanhao Yu Danping Wang Zhenzhen Zhao Cong Luo Bingjun Sun Jin Sun 《Acta Pharmaceutica Sinica B》 SCIE CAS CSCD 2026年第3期1662-1675,共14页
Prodrug nanoassemblies offer an innovative approach to drug delivery,but their lysosomal entrapment often impairs drug release.Notably,tertiary amine structures can undergo protonation reactions,thereby facilitating l... Prodrug nanoassemblies offer an innovative approach to drug delivery,but their lysosomal entrapment often impairs drug release.Notably,tertiary amine structures can undergo protonation reactions,thereby facilitating lysosomal escape through the proton sponge effect.In this study,we developed three novel paclitaxel prodrug nanoassemblies(PTX–SS–NO NPs,PTX–SS–CC NPs and PTX–SS–NC NPs)featuring distinct heterocyclic tertiary amine structures to investigate structure-activity relationships in lysosomal escape and drug delivery.Among them,PTX–SS–NC NPs demonstrated excellent lysosomal escape capability,enabling rapid drug release into the cytosol.Systematic evaluation revealed that the PTX–SS–NC NPs exhibited optimized pharmacokinetics and significant tumor accumulation,further contributing to their strong antitumor efficacy.Our findings establish heterocyclic tertiary amines as crucial design elements for overcoming lysosomal entrapment and optimizing chemotherapeutic prodrug nanoassemblies. 展开更多
关键词 Heterocyclic tertiary amine Lysosomal escape Proton sponge effect Paclitaxel prodrug nanoassemblies Modular design Stimuli-responsive Drug delivery Cancer therapy
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Dark triplet state activation to construct near-infrared host-guest organic room temperature phosphorescence materials for in vivo bioimaging 认领 引用
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作者 Yanyan Tuo Hongbo Wang +7 位作者 Mingyang Han Chen Lu Guoyu Jiang Jianye Gong Chunbin Li Lina Feng Dan Ding Jianguo Wang 《Science China Materials》 SCIE EI CAS CSCD 2026年第6期3262-3272,共11页
Organic room temperature phosphorescence(RTP)materials,particularly those emitting in the near-infrared(NIR)region,hold great promise for bioimaging due to their deep-tissue penetration and minimal autofluorescence in... Organic room temperature phosphorescence(RTP)materials,particularly those emitting in the near-infrared(NIR)region,hold great promise for bioimaging due to their deep-tissue penetration and minimal autofluorescence interference.However,achieving efficient NIR RTP with long lifetimes remains challenging due to inefficient triplet exciton utilization.Herein,we propose a dark triplet state activation strategy to achieve efficient NIR RTP by leveraging host-guest energy transfer.Using benzophenone derivatives(BP,OBP,MBP,PBP)as rigid host matrices with high intersystem crossing(ISC)efficiency and an NIR fluorophore(MPTCF)as the guest,we achieve efficient Dexter-type triplet-triplet energy transfer(TTET)that converts non-emissive host triplets into guest-centered NIR phosphorescence.Systematic optimization of the host-guest system has shown that PBP/MPTCF exhibits exceptional performance,including long phosphorescence centered at 705 nm,an ultralong phosphorescence lifetime(210.3 ms),and high ISC efficiency(44.4%).When fabricated into nanoparticles(NPs),PBP/MPTCF exhibits superior performance,featuring prolonged phosphorescence signals(>120 s),deep tissue penetration capability(>2 mm),and excellent biocompatibility(cell viability>95%at 300μM).In addition,this system enables high-contrast subcutaneous imaging with excellent dispersibility and stable in vivo imaging capability.More importantly,PBP/MPTCF NPs demonstrate precise lymph node mapping through timegated phosphorescence imaging and efficient tumor visualization within 4 h post-injection with a high tumor-to-liver ratio of 2.8.The successful activation of dark triplet states through this host-guest approach provides a general design principle for developing high-performance NIR RTP materials,while the demonstrated biomedical applications highlight their significant potential for advanced bioimaging and precision diagnostics. 展开更多
关键词 organic near-infrared room-temperature phosphorescence host-guest interaction dark triplet state activation triplet-triplet energy transfer in vivo bioimaging
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