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Aggregate 2024年第2期5卷 423-430页

作者： Peisheng Cao Yanying Wang Haoyue Zheng Peng Wu College of Chemistry Sichuan UniversityChengduChina Analytical&Testing Center State Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengduChina

The unusual room-temperature phosphorescence(RTP)from the n electron-rich systems(without regular conjugated structure)has aroused great attention for structural designing and application development of RTP *** emission has been ascribed to clusterization-triggered emission(CTE)via weak through-space conjugation of n electrons in the ***,there was suspicion on such RTP as impurity-induced ***,in-depth photophysical investigation and effective proof methods are needed to trace the origin of such ***,using the recently reported CTE phosphor boric acid as the example,a Jablonski diagram-based verification protocol was proposed to confirm the intrinsic luminescence of the n electrons-rich ***,some other types of luminophores,that is,traditional phosphors,already reported impurity-induced and host-guest doping luminophores,were included for ***,this work provides a basic paradigm for differentiating between the impurity-involved and the n electron-rich phosphors and will further deepen the understanding of nonconventional luminescence.

关键词： boric acid clusterization-triggered emission impurity-induced phosphorescence through-space conjugation

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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

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A clusteroluminescent supramolecular polymer network constructed by pillararene and its application in information encryption

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Aggregate 2024年第5期5卷 491-500页

作者： Meiru Zhang Yujie Cheng Ting Zhang Bicong Liang Xuehong Wei Pi Wang Danyu Xia Xuzhou Yan Scientiﬁc Instrument Center Shanxi UniversityTaiyuanP.R.China College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuanP.R.China School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong UniversityShanghaiP.R.China

clusterization-triggered emissive(CTE)materials have attracted great attention in recent *** regulation of the emission property of materials with CTE property through supramolecular interactions is an excellent strategy for the construction of smartﬂuorescent *** this work,we have pre-pared a regulatable supramolecular polymer network with CTE properties through pillararene-based host-guest *** pillar[5]arene-grafted poly(methyl methacrylate)(PMMA)showed a classic CTE *** adding Brooker’s merocyanine-grafted polymer to the solution of the pillar[5]arene-containing PMMA,the supramolecular polymer network gel formed by the host-guest inter-actions between pillararene and Brooker’s merocyanine *** supramolecular network showed brighterﬂuorescence than the pillar[5]arene-grafted PMMA in the solid *** addition,theﬂuorescence emission of the supramolecular network can be further regulated by pH *** adding an acid,the Brooker’s merocyanine-containing guest polymer was protonated,and the supramolecular net-work changed to a protonated network through host-guest interactions between protonated Brooker’s merocyanine guest and ***,theﬂuores-cence was quenched when the supramolecular network turned into the protonated *** adding a base,the protonated network can convert back to the origi-nal network,along with recovery of theﬂ***,the regulation of theﬂuorescence of the supramolecular polymer materials with CTE was successfully realized by pillararene-based host-guest ***,this tailorableﬂuorescent supramolecular polymer network system was applied as an information encryption material.

关键词： clusterization-triggered emission host-guest interactions pillararene supramolecular polymers

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Manipulating noncovalent conformational lock via side-chain engineering for luminescence at aggregate level

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Aggregate 2024年第4期5卷 349-359页

作者： Mingbing Lian Yingxiao Mu Zecong Ye Ziying Lu Jingping Xiao Jianyu Zhang Shaomin Ji Haoke Zhang Yanping Huo Ben Zhong Tang School of Chemical Engineering and Light Industry Analytical and Testing CenterGuangdong University of TechnologyGuangzhouChina Stratingh Institute for Chemistry and Zernike Institute for Advanced Materials University of GroningenGroningenThe Netherlands MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhouChina School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongGuangdongChina

The unfavorable photochemical processes at the molecular level have become a bar-rier limiting the use of aromatic amides as high-performance luminescent ***,we propose a reliable strategy for manipulating noncovalent conformational lock(NCL)via side-chain engineering to burst out eye-catching luminescence at the aggregate *** to the invisible emission in dilute solutions,dyad OO with a three-centered H-bond gave the wondrous crystallization-induced emis-sion with a quantum yield of 66.8%and clusterization-triggered emission,which were much brighter than those of *** calculations demonstrate that crystallization-induced planarized intramolecular charge transfer(PICT),con-formation rigidiﬁcation,and through-space conjugation(TSC)are responsible for aggregate-state *** NCL composed of intramolecular N-H⋅⋅⋅Ointeractions could boost molecular rigidity and planarity,thus greatly facilitating PICT and *** study would inspire researchers to design efﬁcient luminescent materials at the aggregate level via rational conformational control.

关键词： aromatic amide clusterization-triggered emission crystallization-induced emission noncovalent confor-mational lock side-chain engineering

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