检索结果-南通市图书馆

Plasmon-induced near-field and resonance energy transfer enhancement of photodegradation activity by Au wrapped CuS dual-chain

引用

Nano Research 2022年第6期15卷 5671-5677页

作者： Jinming Ma Xiangfu Liu Rongwen Wang Feng Zhang Guoli Tu Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China

Self-assembled chain-like nanostructures utilizing localized surface plasmon resonance(LSPR)effect could enhance the local electromagnetic field for energy transfer,which provides huge structural advantages for some transmission-related applications such as *** this work,the dual-chain structure of Au chain wrapped CuS(denoted as Au Chain@CuS)was successfully synthesized by the one-step hydrothermal ***,L-cysteine is used as the sulfur source and linking agent,and copper nitrate is the precursor of copper ions,forming the dual-chain driven by 15 nm uniform Au *** absorption spectroscopy(TAS)and finite-difference-time-domain(FDTD)simulation exhibited the highly intensive electromagnetic field around the self-assembly chain,the raised formation and transfer rate of electron–hole pairs between the Au chain and surrounding CuS ***,it shows an excellent photodegradation activity on dye rhodamine B(RhB).Within 1 h under simulated sunlight,the degradation rate reached 98.81%in Au Chain@CuS,which is 2.27 times higher compared to the bare *** enhanced performance is mainly attributed to the near-field enhancement effect induced by LSPR,as well as the benefits of more effective resonance energy transfer(RET).This research comprehensively shows the electromagnetic field in LSPR metal chain is more intensive by order of magnitude relative to the isolated *** the continuous CuS chain wrapped outside of the LSPR source effectively absorbs and utilizes the plasmonic energy,then promotes the formation of the photo-generated charge,thus increasing the photocatalytic *** founding of wrapped coupled-metal dual-chain provides a promising candidate for the highly efficient photocatalysts.

关键词： Au Chain@CuS dual-chain localized surface plasmon resonance photodegradation near-field enhancement resonance energy transfer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Spatial effect and resonance energy transfer for the construction of carbon dots composites with long-lived multicolor afterglow for advanced anticounterfeiting

引用

中国化学快报:英文版 2023年第8期34卷 208-212页

作者： Qian Cheng Zhiyuan Chen Lai Hu Yuwei Song Senqiang Zhu Rui Liu Hongjun Zhu School of Chemistry and Molecular Engineering Nanjing Tech UniversityNanjing 211816China

Carbon dots(CDs)with room-temperature phosphorescence(RTP)have attracted dramatically growing interest in optical functional ***,the photoluminescence mechanism of CDs is still a vital and challenging *** this work,we prepared CD-based RTP materials via melting boric acid with various lengths of alkyl amine compounds as *** spatial effect on the structure and the RTP properties of CDs were systematically *** the increase in carbon chain length,the interplanar spacing of the carbon core expands and crosslink-enhanced emission weakens,resulting in a decrease in the phosphorescence intensity and ***,based on triplet-to-singlet resonance energy transfer,we employed intense and long-lived phosphorescence CDs as the donor and short-lived fluorescent dyes as the acceptor to achieve long-lived multicolor *** the triplet-to-singlet resonance energy transfer,the afterglow color can change from green to *** afterglow lifetimes are more than 0.9 *** to the outstanding afterglow properties,the composites were used for timeresolved and multiple-color advanced *** work will promote the design of multicolor and long-lived afterglow materials and expand their applications.

关键词： Carbon dots Spatial effect resonance energy transfer Multicolor Long-lived afterglow Anticounterfeiting

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Sensitive electrochemiluminescence resonance energy transfer(ECL-RET) between Ru(bpy)3^2＋ and Au nanorod for hydrogen peroxide detection

引用

Science China Chemistry 2017年第3期60卷 410-414页

作者： Meisheng Wu Zhiqin Chen Hengyu Xu Aiping Zhang Department of Chemistry College of Science Nanjing Agricultural University Nanjing 210095 China

Here,we developed a novel electrochemiluminescence resonance energy transfer(ECL-RET) approach between Ru(bpy)_3^(2+) and Au nanorods(NRs) for sensitive determination of H_2O_*** NRs were synthesized through silver ion-assisted seed-mediated method which exhibited an obvious absorption peak at about 627 *** were modified at glassy carbon electrode(GCE) surface which showed a significant ECL quenching efficiency about 56.5%due to the ECL-RET *** Au NRs modified electrode was then utilized to measure the concentration of H_2O_2 on the basis of the significant quenching effect of H_2O_2 on Ru(bpy)_3^(2+) *** demonstrated that the decrement of ECL intensity at Au NRs modified electrode had ~ 6.6-fold enhancement as compared with that at bare electrode.

关键词： electrochemiluminescence resonance energy transfer Au NRs

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Highly-efficient quantitative fluorescence resonance energy transfer measurements based on deep learning

引用

Journal of Innovative Optical Health Sciences 2020年第6期3卷 23-35页

作者： Lin Ge Fei Liu Jianwen Luo Department of Biomedical Engineering School of Medicine Tsinghua UniversityBeijing100084China Beijing Advanced Information&Industrial Technology Research Institute Beijing Information Science&Technology University Beijing 100192China

Intensity-based quantitative fluorescence resonance energy transfer(FRET)is a technique to measure the distance of molecules in scale of a few nanometers which is far beyond optical diffraction *** widely used technique needs complicated experimental process and manual image analyses to obtain precise results,which take a long time and restrict the application of quantitative FRET especially in living *** this paper,a simplified and automatic quanti-tative FRET(saqFRET)method with high efficiency is *** saqFRET,photo-activatable acceptor PA-mCherry and optimized excitation wavelength of donor enhanced green fluorescent protein(EGFP)are used to simplify FRET crosstalk *** manual image analyses are time consuming when the dataset is *** proposed automatic image analyses based on deep learning can analyze 100 samples within 30 s and demonstrate the same precision as manual image analyses.

关键词： resonance energy transfer fluorescence living cells photoactivatable deep network

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

White light luminescence in Dy/Tm co-doped yttria stabilized zirconia single crystals

引用

Journal of Rare Earths 2023年第12期41卷 1904-1910,I0003页

作者： Xing Hong Lei Zhang Shoulei Xu Zeyu Cheng Yazhao Wang Bernard A.Goodman Dingkang Xiong Wen Deng School of Physical Science and Technology Guangxi UniversityNanning530004China Electronic Information School Wuhan UniversityWuhan430072China

A series of high quality Dy_(2)O_(3) and Tm_(2)O_(3)co-doped yttria stabilized zirconia(YSZ) single crystals was *** crystals have a single cubic structure,and exhibit the characteristic of Dy^(3+)(blue and yellow emissions) and Tm^(3+)(blue emission) under excitation with NUV *** rtantly,the hue can be varied between blue and white by modifying the Tm^(3+)/Dy^(3+)*** photoluminescence and decay curves are consistent with the existence of resonance-type energy transfer from Tm^(3+)to Dy^(3+)ions via an electric multipole interaction *** luminescence intensity is observed in YSZ doped with 0.50 mol% Tm_(2)O_(3) and 0.75 mol% Dy_(2)O_(3),and this sample has CIE coordinates(x = 0.33,y = 0.33) in accordance with those for white ***,the outstanding luminescence properties of these single crystals suggest potential applications in white light emission devices.

关键词： YSZ single crystal Tm^(3+)/Dy^(3+)co-doping Optical floating zone method resonance energy transfer White light emission Rare earths

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Efficient transfer of metallophosphor excitons via confined polaritons in organic nanocrystals

引用

Chinese Physics B 2023年第10期32卷 503-508页

作者：芦文斌陈永聪杨旭云敖平 Shanghai Center for Quantitative Life Sciences&Physics Department Shanghai UniversityShanghai 200444China College of Biomedical Engineering Sichuan UniversitySichuan 610064China

We investigate the transfer of phosphorescent energy between co-assembled metallophosphors in crystalline nanostructures [Angew. Chem. Int. Ed. 57 7820(2018) and J. Am. Chem. Soc. 140 4269(2018)]. Neither Dexter's nor Forster's mechanism of resonance energy transfer(RET) could account fully for the observed rates, which exceed 85% with significant temperature dependence. But there exists an alternative pathway on RET mediated by intermediate states of resonantly confined exciton–polaritons. Such a mechanism was used to analyze artificial photosynthesis in organic fluorescents [***. Lett. 122 257402(2019)]. For metallophosphors, the confined modes act as extended states lying between the molecular S_(1) and T_(1) states, offering a bridge for the long-lived T_(1) excitons to migrate from donors to acceptors. Population dynamics with parameters taken entirely based on experiments fits the observed lifetimes of phosphorescence across a broad range of doping and temperature.

关键词： organic nanocrystals phosphorescent emission resonance energy transfer exciton–polariton

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

energy transfer in plasmonic photocatalytic composites

引用

Light(Science & Applications) 2016年第1期5卷 695-707页

作者： Xiang-Chao Ma Ying Dai Lin Yu Bai-Biao Huang School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100China

Among the many novel photocatalytic systems developed in very recent years,plasmonic photocatalytic composites possess great potential for use in applications and are one of the most intensively investigated photocatalytic systems owing to their high solar energy utilization *** these composites,the plasmonic nanoparticles(PNPs)efficiently absorb solar light through localized surface plasmon resonance and convert it into energetic electrons and holes in the nearby *** energy transfer from PNPs to semiconductors plays a decisive role in the overall photocatalytic ***,the underlying physical mechanism is of great scientific and technological importance and is one of the hottest topics in the area of plasmonic *** this review,we examine the very recent advances in understanding the energy transfer process in plasmonic photocatalytic composites,describing both the theoretical basis of this process and experimental *** factors that affect the energy transfer efficiencies and how to improve the efficiencies to yield better photocatalytic performance are also ***,comparisons are made between the various energy transfer processes,emphasizing their limitations/benefits for efficient operation of plasmonic photocatalysts.

关键词： hot electron injection near-field enhancement plasmonic photocatalyst resonance energy transfer surface plasmon resonance

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A spatial-resolved electrochemiluminescence aptasensor for protein detection in a double-check mode

A spatial-resolved electrochemiluminescence aptasensor for p...

引用

河南省化学会2018年学术年会

作者： Fu-Rao Liu Jun-Tao Cao Yan-Ming Liu College of Chemistry and Chemical Engineering Xinyang Normal University

A spatial-resolved electrochemiluminescence(ECL)aptasensing platform for sensitive protein detection was constructed in a double-check ***-C composites as cathodic ECL emitters and luminol-gold nanoparticles(L-Au NPs)as anodic ECL emitters were immobilized on working electrode 1(WE1)and working electrode 2(WE2)of the dual-disk glassy carbon electrodes(DDCE),*** aptasensing platform was designed by integrating Ag-polyamidoamine NCs-labeled biotin-aptamer(Ag-PAMAM-bio-Apt)with the ECL emitters on the *** in-situ consumption of co-reactants,*** in the ECL system by Ag-PAMAM NCs resulted in the great ECL quenching on both WE1 and *** resonance energy transfer between L-Au NPs and Ag-PAMAM NCs made the ECL on WE2 further *** the presence of carcinoembryonic antigen(CEA),portions of Ag-PAMAM-bio-Apt detached from the DDCE because of the competitive reaction of CEA and cDNA toward to Ag-PAMAM-bio-Apt,generating an enhancement of ECL *** strategy achieves the detection of CEA in a double-check mode with detection limits of 0.39 pg m L for the cathodic assay(WE1)and 0.20 pg m L for the anodic assay(WE2),***,the proposed method had been successfully applied to determine CEA in human serum sample with recoveries of80.0?110.0%,showing great potential in cancer diagnosis.

关键词： Carcinoembryonic antigen Silver-polyamidoamine nanoparticles resonance energy transfer CdS-C composites Luminol-gold nanoparticles

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：