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AIEgen configuration transition and aggregation enable dual prompt emission for single-component nondoped white OLEDs

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Aggregate

Aggregate 2024年第1期5卷 292-298页

作者： Jiasen Zhang Qiang Wei Wei Li Hao Chen Xiangyu Zhu Yongqi Bai Nannan Fei Liang Cao Zujin Zhao anjun qin Ben Zhong Tang Ziyi Ge Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboP.R.China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingP.R.China Center for Aggregation-Induced Emission State Key Laboratory of Luminescent Materials and Devices South China University of Technology GuangzhouGuangzhouChina Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhenChina

The dual emission(DE)feature in materials holds great potential to revolutionize the development of one-component system white organic lightemitting diodes(WOLEDs).However,the reported DE materials remain scarce owing to the formidable challenge of breaking Kasha’s rule and managing the intricate energy/charge transfer ***,we have introduced a groundbreaking DE AIEgen,2CzAn-TPE,which possesses a simple structure and undergoes Z-to-E isomerization and exhibits yellow and red fluorescence powders for pre-and post-sublimation,*** relatively lower potential energy,Z-conformation((Z)-1,2-diphenyl-1,2-bis(4-(10-(9-phenyl-9H-carbazol-3-yl)anthracen-9-yl)phenyl)ethene)of 2CzAn-TPE can be readily transformed into E-conformation((E)-1,2-diphenyl-1,2-bis(4-(10-(9-phenyl-9Hcarbazol-3-yl)anthracen-9-yl)phenyl)ethene)via vacuum *** utilization of X-ray diffraction and grazing-incidence-wide-angle X-ray scattering techniques confirms the structural transformation,while the crystallographic analysis reveals the establishment of numerous intermolecular CH⋅⋅⋅πinteractions between the tetraphenylethene(TPE)moiety and both the anthracene and carbazole *** allows a densely packed molecular arrangement,thereby offering propitious conditions for excimer generation in the E-conformation aggregated *** utilizing the sublimated 2CzAn-TPE as an emitter,a nondoped one-component WOLED was prepared,exhibiting an exceptionally high external quantum efficiency(EQE)of 5.0%,which represents one of the highest performances among all *** research introduces a novel,simple,and efficient approach to realize highly efficient one-molecule WOLEDs.

关键词： aggregation-induced emission dual emission isomerization white OLED

Construction of Functional Poly（aroyl）triazoles by Click Polymerization

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Construction of Functional Poly（aroyl）triazoles by Click P...

New sustainable polymers with on-demand depolymerization property

5th International Symposium on High-Tech Polymer Materials

作者： anjun qin~(1 2) Ben Zhong Tang~(1 2) 1.Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China. 2.Department of Chemistry The Hong Kong University of Science & Technology Clear Water Bay Kowloon Hong Kong China

＜正＞1,3-dipolar cycloaddition between azide and acetylene,reviewed systematically by Huisgen in 1980s’,was revived after Sharpless’ and Meldal’s research groups independently reported that Cu（Ⅰ） species can efficiently catalyze such reaction to obtain regioregular 1,4-disubstituted 1,2,3-triazoles with high yield and simply isolation of *** react was thus coined as"Click Chemistry"by *** enjoys the features

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Science China Chemistry 2024年第9期67卷 2803-2841页

作者： Yangyang Sun Zesheng An Yanshan Gao Rongrong Hu Ye Liu Hua Lu Xiao-Bing Lu Xuan Pang anjun qin Yong Shen Youhua Tao Yu-Zhong Wang Junpeng Wang Gang Wu Guang-Peng Wu Tie-Qi Xu Xing-Hong Zhang Yuetao Zhang Zhenbiao Zhang Jian-Bo Zhu Miao Hong Zhibo Li State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China State Key Laboratory Base of Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao266042China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesSouth China University of TechnologyGuangzhou 510640China State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart MaterialsDalian University of TechnologyDalian 116024China Beijing National Laboratory for Molecular Sciences Center for Soft Matter Science and EngineeringKey Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE) National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan)College of ChemistryState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610064China School of Polymer Science and Polymer Engineering the University of AkronAkronOH 44325USA MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationSuzhou Key Laboratory of Macromolecular Design and Precision SynthesisCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China

To combat the crisis of today's synthetic polymers arising from unsustainable production and disposal,it is essential for the synthetic polymer community to reshape the current polymer industry with sustainable *** an emerging class of sustainable polymers,the development of chemically depolymerizable polymers(CDPs),which can undergo closed-loop depolymerization/repolymerization cycles to reproduce virgin polymers without the loss of properties from recovered monomers,offers an ideal solution to preserve finite natural resources,provides a feasible solution to the end-of-life issue of polymer waste,and thereby establishes a circular materials ***,two grand key challenges have been encountered in the establishment of practically useful CDPs:how to balance polymerization and depolymerization ability and how to unify conflicted depolymerizability and physical ***,this critical review article presents our vision for summarizing feasible strategies to overcome the above two significant challenges and the design principles for constructing an ideal CDP by highlighting selected major progress made in this rapidly expanding field.

关键词： chemically depolymerizable polymers sustainable polymers depolymerization monomer recovery degradation plastics

金沙江下游三堆子河段卵石推移质输沙率公式研究

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水利学报 2024年第1期55卷 35-47页

作者：冯志毅邓安军秦蕾蕾吕瑞茹中国水利水电科学研究院流域水循环模拟与调控国家重点实验室北京100048 中国水利水电科学研究院水利部泥沙科学与北方河流治理重点实验室北京100048 中国三峡建工(集团)有限公司四川成都610041

金沙江上中游梯级水库运用后,进入下游的悬移质输沙量大幅减少,水沙条件显著变化;同时,卵石推移质输沙量在总输沙量中的比重明显增加,对水库淤积进程影响显著,开展变化水沙条件下金沙江下游卵石推移质输移规律研究具有重要意义。基于下... 详细信息

金沙江上中游梯级水库运用后,进入下游的悬移质输沙量大幅减少,水沙条件显著变化;同时,卵石推移质输沙量在总输沙量中的比重明显增加,对水库淤积进程影响显著,开展变化水沙条件下金沙江下游卵石推移质输移规律研究具有重要意义。基于下游入口三堆子水文站2008—2021年卵石推移质实测资料,对经典起动流速公式和推移质输沙率公式进行了检验与修正。结果表明:与经典起动流速公式计算结果相比,通过引入以卵石粒径为变量的系数,所得到的不同粒径范围的卵石推移质起动流速修正公式,计算精度显著提高;经典推移质输沙公式的计算结果在输沙强度较低时与实测值偏差很大,通过建立输沙强度与水流强度的关系,并引入隐暴参数对公式进行修正,明显提升了其在低输沙率情况下的计算精度。修正后的起动流速公式和推移质输沙率公式能更有效地反映三堆子河段卵石推移质的输移规律。

关键词：金沙江下游梯级水库卵石推移质起动流速推移质输沙率

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A general strategy for realization of efficient room-temperature phosphorescence from amorphous metal-free small molecules

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Science China Chemistry 2018年第6期61卷 635-636页

作者： anjun qin Center for Aggregation-Induced Emission State Key Laboratory of Luminescent Materials and Devices South China University of Technology

Luminescent materials with room-temperature phosphorescence(RTP)have drawn tremendous attention due to their remarkable advantages,such as long emission wavelength and lifetime,large Stokes shift,and high signal-noise ***,most RTP materials are inorganics or organometallic complexes containing expensive and toxic noble *** promote the development of the field of RTP,it is necessary and important to design and prepare metal-free RTP materials because of their potential applications in molecular switches,anti-counterfeiting,chemical sensors and biological imaging,etc.[1].

关键词：有机金属房间温度磷光小分子非结晶 RTP 光材料建筑群

Structural Controls of Tetraphenylbenzene-based AIEgens for Non-doped Deep Blue Organic Light-emitting Diodes

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Chemical Research in Chinese Universities 2021年第1期37卷 16-24页

作者： HAN Pengbo qin anjun TANG Ben Zhong1 2State Key Laboratory of Luminescent Materials and DevicesGuangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesSCUT-HKUST Joint Research InstituteAIE InstituteCenter for Aggregation-induced EmissionSouth China University of Technology(SCUT)Guangzhou510640P.R.China Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration and ReconstructionInstitute for Advanced Studyand Department of Chemical and Biological EngineeringThe Hong Kong University of Science&Technology(HKUST)Clear Water BayKowloonHong KongP.R.China

Aggregation-induced emission(AIE)has emerged as a new concept,giving highly efficient solid-state ***,AIE luminogens(AIEgens)with deep blue emission(400–450 nm)have displayed salient advantages for non-doped organic light-emitting diodes(OLEDs).However,deep blue emitters with Commission Internationale de L’Eclairage(CIE)coordinates less than 0.08 are still *** this review,we outline the latest achievements in the molecular guidelines based on the AIE core of tetraphenylbenzene(TPB)for developing efficient deep blue *** provide insights into the construction of deep blue emitters with high horizontal orientation by regulating the length of the linear *** also discuss the luminescence mechanisms of these AIEgens-based OLEDs by using the magnetic field effects ***,a summary of the challenges and perspectives of deep blue AIEgens for non-doped OLEDs is also presented.

关键词： Aggregation-induced emission(AIE) Non-doped device Organic light-emitting diode Deep blue emitter Tetraphenylbenzene

Special topic on aggregation-induced emission

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Science China Chemistry 2018年第8期61卷 879-881页

作者： anjun qin Ben Zhong Tang State Key Laboratory of Luminescent Materials and Devices Center for Aggregation-Induced Emission Guangzhou International CampusSouth China University of Technology Department of Chemistry Hong Kong Branch of National Engineering Research Center for Tissue Restoration and Reconstruction Institute for Advanced Study and Department of Chemical and Biological Engineering The Hong Kong University of Science & Technology

Aggregation-induced emission（AIE）,conceptually termed in 2001 by our group at the Hong Kong University of Science＆Technology,refers to a unique phenomenon that a kind of nonemissive or weakly emissive molecules in ... 详细信息

关键词： AIE In BODIPY Special topic on aggregation-induced emission

Special topic on research frontier in polymer science in China

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Science China Chemistry 2016年第12期59卷 1529-1530页

作者： anjun qin Ben Zhong Tang State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640. China Department of Chemistry Hong Kong Branch of National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science & Technology Clear Water Bay Kowloon Hong Kong China

Polymer science is a multiple discipline that studies synthe- sis, structure, function and application of macromolecules. It encompasses subdisciplines of polymer chemistry, phys- ics and engineering. Despite the fact... 详细信息

关键词： Special topic on research frontier in polymer science in China

Diverge from the norm

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National Science Review 2014年第1期1卷 22-24页

作者： Zhen Li anjun qin Department of Chemistry Wuhan University Department of Polymer Science and Engineering Zhejiang University Guangdong Innovative Research Team State Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology

It has been a general belief that luminophore aggregation normally quenches light *** conceptualization of‘aggregation-induced emission’(AIE)breaks this‘common law’and provides a new stage for the exploration of practically useful light-emiting *** booming development in this emerging area of research has recently been showcased at the First International Symposium on Aggregation-Induced Emission(ISAIE)held in Wuhan,China.

关键词： AIE Diverge from the norm