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Chinese Journal of Polymer Science 2015年第5期33卷 680-687页

作者： Rui-bin wang wang-zhang yuan 朱新远 School of Chemistry and Chemical Engineering Shanghai Key Lab of Electrical Insulation and Thermal AgingShanghai Jiao Tong University Instrumental Analysis Center Shanghai Jiao Tong University

It is found that the fluorescence of aliphatic poly（amido amine）s including linear and hyperbranched ones can be dramatically enhanced by simple aggregation of polymer chains, attributing to the formation of a variety of intra- and interchain clusters with shared lone-pair electrons and the restriction of intramolecular motions. Thanks to the combination of strong solid fluorescence and excellent biocompatibility, these non-conjugated polymers become promising candidates for bioimaging such as bacterial detection. This finding not only extends the aggregation-induced emission（AIE） systems from conjugated compounds to non-conjugated materials, which expands the bioapplication range of AIE systems, but also sheds light on the exploration of novel unconventional luminogens.

关键词： Luminescence Aggregation-induced emission Non-conjugated polymer

A gelable pure organic luminogen with fluorescence-phosphorescence dual emission

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Science China Chemistry 2017年第6期60卷 806-812页

作者： Kaixuan Li Lifang Zhao Yongyang Gong wang-zhang yuan Yongming zhang School of Chemistry and Chemical Engineering Shanghai Key Lab of Electrical Insulation and Thermal AgingShanghai Electrochemical Energy Devices Research Center Shanghai Jiao Tong University Shanghai 200240 China

Pure organic luminogens with room temperature phosphorescence(RTP) have drawn much attention due to their fundamental importance and promising applications in optoelectronic devices, bioimaging, sensing, etc. Fluorescence-phosphorescence dual emission at room temperature, however, is rarely observed in pure organic materials. Herein, we reported a metal-and heavy-atom free pure organic luminogen with tert-butyl groups, DtBuCZBP, which is ready to form organogels in dimethylsulfoxide(DMSO).It emits prompt and delayed fluorescence, as well as RTP, namely dual emission in as-prepared solid, gels and polymeric *** the best of our knowledge, it is the first example of metal-and heavy-atom free pure organic gelator with RTP emission. Such unique RTP and moreover dual emission properties in different states make DtBuCZBP a potential material for diverse applications.

关键词： pure organic luminogens dual emission room temperature phosphorescence organogel

Clustering-triggered phosphorescence of nonconventional luminophores

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Science China Chemistry 2023年第2期66卷 367-387页

作者： Tianjia Yang Yuxuan Li Zihao Zhao wang zhang yuan School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Key Lab of Electrical Insulation and Thermal AgingShanghai Electrochemical Energy Devices Research CenterShanghai Jiao Tong UniversityShanghai200240China

Nonconventional luminophores have attracted significant attention for their unique photophysical properties and potential applications in different *** classic luminogens consisting of remarkably conjugated segments,nonconventional luminophores generally possess merely nonconjugated or short-conjugated structures based on electron-rich ***,phosphorescence,and even color tunable room temperature phosphorescence(RTP)could be readily obtained from these unique ***,we summarized recent advances in the phosphorescence of nonconventional luminophores,with focus on RTP and color tunable *** clustering-triggered emission(CTE)mechanism could be applied to explain the luminescence as clustering-triggered phosphorescence(CTP).Furthermore,strategies toward the RTP regulation are summarized,and corresponding applications are demonstrated.

关键词： nonconventional luminophore clustering-triggered emission room temperature phosphorescence clustering-triggered phosphorescence color tunable phosphorescence

Crystallization-induced phosphorescence of pure organic luminogens

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Chinese Chemical Letters 2016年第8期27卷 1184-1192,1465-1466页

作者： Chun-Rui wang Yong-Yang Gong wang-zhang yuan Yong-Ming zhang School of Chemistry and Chemical Engineering Shanghai Key Lab of Electrical Insulation and Thermal AgingShanghai Electrochemical Energy Devices Research CenterShanghai Jiao Tong University

This review summarizes the recent progress of efficient room temperature phosphorescence（RTP） from pure organic luminogens achieved by crystallization-induced phosphorescence（CIP）,with focus on the advances in our *** homocrystals,mixed crystals and cocrystals are also ***,intriguing RTP emission from the luminogens without conventional chromophores is demonstrated.

关键词： Room temperature phosphorescence Crystallization-induced phosphorescence Pure organic luminogens Intermolecular interactions Conformation rigidification Nonconventional luminogens

Time-Dependent Afterglow from a Single Component Organic Luminogen

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Research 2021年第1期2021卷 650-660页

作者： Tianjia Yang Yunzhong wang Jixuan Duan Shuangyu Wei Saixing Tang wang zhang yuan School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Key Lab of Electrical Insulation and Thermal AgingShanghai Jiao Tong UniversityShanghai 200240China

Pure organic luminogens with long-persistent luminescence have been extensively studied,on account of their fundamental research significance and diverse utilizations in anticounterfeiting,bioimaging,encryption,organic light-emitting diodes,chemo-sensing,***,time-dependent color-tunable afterglow is rarely reported,especially for single-component *** this work,we reported an organic luminogen with time-dependent afterglow,namely,benzoyleneurea(BEU),with multiple persistent room-temperature phosphorescence(p-RTP)and thermally activated delayed fluorescence(TADF)in single *** the lifetime of TADF is relatively short(~1.2 ms),those for p-RTP are as long as around 369~754 *** comparable but different decay rates of diversified p-RTP emissions endow BEU crystals with obvious time-dependent *** existence of multiple emissions can be reasonably illustrated by the clustering-triggered emission(CTE)***-crystal structure illustrates that the combination of benzene ring and nonconventional chromophores of ureide helps facilitate divergent intermolecular interactions,which contribute to the formation of varying emissive ***,its methyl-and chloro-substituted derivatives show similar multiple p-RTP ***,no time-dependent afterglows are observed in their crystals,due to the highly approaching *** afterglow color variation of BEU crystals grants its applications in advanced anticounterfeiting field and information encryption.

关键词： mechanism. materials. substituted

Prevalent intrinsic emission from nonaromatic amino acids and poly(amino acids)

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Science China Chemistry 2018年第3期61卷 351-359页

作者： Xiaohong Chen Weijian Luo Huili Ma Qian Peng wang zhang yuan Yongming zhang School of Chemistry and Chemical Engineering Shanghai Key Laboratory of Electrical Insulation and Thermal AgingShanghai Electrochemical Energy Devices Research Center Shanghai Jiao Tong University Department of Chemistry Tsinghua University Institute of Chemistry Chinese Academy of Sciences

Nonaromatic amino acids are generally believed to be nonemissive, owing to their lack of apparently remarkable conjugation within individual molecules. Here we report the intrinsic visible emission of nonaromatic amino acids and poly(amino acids) in concentrated solutions and solid powders. This unique and widespread luminescent characteristic can be well rationalized by the clustering-triggered emission(CTE) mechanism, namely the clustering of nonconventional chromophores(i.e. amino, carbonyl,and hydroxyl) and subsequent electron cloud overlap with simultaneous conformation rigidification. Such CTE mechanism is further supported by the single crystal structure analysis, from which 3 D through space electronic communications are *** prompt fluorescence, room temperature phosphorescence(RTP) is also detected from the solids. Moreover, persistent RTP is observed in the powders of exampled poly(amino acids) of ε-poly-L-lysine(.-PLL) after ceasing UV irradiation. These results not only illustrate the feasibility of employing the building blocks of nonaromatic amino acids in the exploration of new luminescent biomolecules, but also provide significant implications for the emissions of peptides and proteins at aggregated or crystalline states. Meanwhile, they may also shed lights on further understanding of autofluorescence from biological systems.

关键词： nonaromatic amino acids aggregation-induced emission clustering-triggered emission through space electronic communications room temperature phosphorescence

Polymorphism dependent triplet-involved emissions of a pure organic luminogen

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Chinese Chemical Letters 2019年第4期30卷 933-936页

作者： Zihan He Wenbo Li Gan Chen Yongming zhang wang-zhang yuan School of Chemistry and Chemical Engineering Shanghai Key Lab of Electrical Insulation and Thermal Aging Shanghai Electrochemical Energy Devices Research Center Shanghai Jiao Tong University

Polymorphism has been frequently used in tuning the singlet emissions of pure organic dyes. The modulation of triplet-involved emissions, particularly room temperature phosphorescence(RTP),however, is scarcely reported. Herein, polymorphism is reported to tune the triplet-involved emissions of 2 CZBZL, a newly designed pure organic luminogen consisting of twisted benzil and two planar carbazole moieties. Other than the conventional modulation through changing molecular conformation and packing, vibration can also finely tune the triplet-involved emissions. Besides prompt fluorescence(PF),polymorph B with relatively extended conformation emits thermally activated delayed fluorescence(TADF), whereas the others(A, C–E) with similarly more twisted conformations generate predominant RTP or simultaneous DF and RTP. These results demonstrate the fascinating chance to regulate the tripletinvolved emissions through controlling conformation and vibration.

关键词： Polymorphism Room temperature phosphorescence Pure organic luminogens Thermally activated delayed fluorescence Triplet-involved emissions

Robust Multiparty Quantum Secret Key Sharing Over Two Collective-Noise Channels via Three-Photon Mixed States

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Communications in Theoretical Physics 2006年第4X期46卷 607-609页

作者： wang zhang-Yin yuan Hao GAO Gan Shou-Hua School of Physics and Material Science Anhui University Hefei 230039 China

We present a robust （n, n）-threshold scheme for multiparty quantum secret sharing of key over two collectivenoise channels （i.e., the collective dephasing channel and the collective rotating channel） via three-photon mixed states, In our scheme, only if all the sharers collaborate together can they establish a joint key with the message sender and extract the secret message from the sender＇s encrypted message. This scheme can be implemented using only a Bell singlet, a one-qubit state and polarization identification of single photon, so it is completely feasible according to the present-day technique.

关键词： multiparty quantum secret key sharing collective-noise channel

Aggregation-induced phosphorescence and mechanochromic luminescence of a tetraphenylethene-based gold(Ⅰ) isocyanide complex

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Chinese Chemical Letters 2017年第6期28卷 1300-1305页

作者： Wen-Bo Li Wei-Jian Luo Kai-Xuan Li wang-zhang yuan Yong-Ming zhang Shanghai Key Lab of Electrical Insulation and Thermal Aging Shanghai Electrochemical Energy Devices Research Center School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 China

In this study,a new twisting gold（Ⅰ） isocyanide complex based on tetraphenylethene（TPE）,*** designed and *** exhibits aggregation induced phosphorescence（AIP） characteristics,owing to the incorporation of Au moiety and conformation rigidification in the aggregated ***,the emission color of the crystalline solid of TPE-NC-Au changes from blue（454 nm） to green（500 nm） in response to mechanical grinding,due to the combined effects of conformation planarization,enhanced π…π stacking,as well as the emergence of aurophilic interactions in the ground amorphous ***,the emission color can be restored upon solvent fuming,associating with the reconstruction of crystalline *** AIP and switchable mechanochromism of TPE-NC-Au make it suitable for potential applications in bioimaging,sensing,and optoelectronic devices.

关键词： Aggregation-induced phosphorescence Mechanochromism Aurophilic interaction Gold(Ⅰ) isocyanide complex

Clusteroluminescence:A gauge of molecular interaction

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Chinese Chemical Letters 2023年第5期34卷 165-173页

作者： Bin Liu Bo Chu Lixun Zhu Haoke zhang wang-zhang yuan Zheng Zhao Wen-Ming Wan Xing-Hong zhang School of Energy and Power Engineering North University of ChinaTaiyuan 030051China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Key Lab of Electrical Insulation and Thermal AgingShanghai Electrochemical Energy Devices Research CenterShanghai Jiao Tong UniversityShanghai 200240China School of Science and Engineering The Chinese University of Hong KongShenzhen 518172China State Key Laboratory of Structural Chemistry Key Laboratory of Coal to Ethylene Glycol and Its Related TechnologyCenter for Excellence in Molecular SynthesisFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

Clusteroluminescence(CL)materials,as an emerging class of luminescent materials with unique photophysical properties,have received increasing attention owing to their great theoretical significance and potential for biological *** much progress has been made in the design,synthesis and application of CL materials,there is still a big challenge in the emission *** far,throughspace interaction has been proposed as the preliminary mechanism of the corresponding clusterizationtriggered emission(CTE)effect,but a systematic theory is still *** review summarizes the current mechanistic understanding of CL materials including organic/inorganic small molecules,and polymers with/without isolated aromatic *** addition,some strategies to achieve high quantum yield,adjustable emission color,and persistent room temperature phosphorescence in CL materials are also *** last,a perspective of the mechanism and application of CL materials are demonstrated,which inspire the researchers working on the development of new kinds of functional materials.

关键词： Clusteroluminescence Clusterization-triggered emission Through-space interaction Non-conjugated structure