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Memorable full-color circularly polarized luminescence from chiral co-assembled polymer films enabled by multipath transfer

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Science China Chemistry 2023年第4期66卷 1169-1178页

作者： Gong Zhang Yinglong Bao Menghan Pan Nianwei Wang Xiaoxiao Cheng Wei Zhang State and Local Joint Engineering Laboratory for Novel Functional polymeric Materials Jiangsu Engineering Laboratory of Novel Functional Polymeric MaterialsSuzhou Key Laboratory of Macromolecular Design and Precision SynthesisCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China School of Chemical and Environmental Engineering Anhui Polytechnic UniversityWuhu 241000China

The modulation of circularly polarized luminescence(CPL)is of importance for display and asymmetric chemical ***,the underlying mechanism of CPL transfer remains rarely ***,we rationally design a multipath transfer system including multistep chirality transfer(MCT)and sequential fluorescence resonance energy transfer(SFRET),and we are the first to fabricate memorable full-color CPL-active films with a high dissymmetry factor(~10^(-2)).Specifically,(P/M)-helical nanofibers are constructed by co-assembly between an achiral polymer,poly(9,9-di-n-octylfluorene)(PF8),and easy-to-remove R/*** matching achiral emitters are added,the PF8 mediates MCT and simultaneously triggers the SFRET ***,full-color CPL memory is realized after removing the chiral *** simulation and structure analysis indicate that the robust helical superstructure of PF8 provides chiral sites to accommodate emitters,which is essential for CPL transfer and *** work provides a novel strategy for constructing CPL-active materials in an aggregated state and insights into CPL transfer and memory.

关键词： chiral co-assembly chirality transfer multipath transfer memorable full-color CPL achiral polymer

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Construction of Supramolecular Chirality in polymer Systems:Chiral Induction, Transfer and Application

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Chinese Journal of polymer Science 2021年第11期39卷 1357-1375页

作者： Xiao-Xiao Cheng Teng-Fei Miao Lu Yin Wei Zhang Xiu-Lin Zhu State and Local Joint Engineering Laboratory for Novel Functional polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China State Key Laboratory of Radiation Medicine and Protection Soochow UniversitySuzhou 215123China

Chirality,commonly found in organisms,biomolecules and nature such as L-amino acids and D-sugars,has been extensively studied in chemistry and biomedical ***,the demand for simple and efficient construction of chiral structures,especially chiral polymers,has been rapidly growing due to their potential applications in chemosensors,asymmetric catalysis and biological ***,most chiral polymers reported are prepared directly from chiral monomers/chiral catalysts,the corresponding strategies usually involve tedious and expensive design and ***,chirality induction strategies(such as circularly polarized light,chiral solvation and chiral gelation etc.)have been known to be highly versatile and efficient in producing chirality from achiral *** this feature article,the current research on chirality induction,transfer and application in achiral polymer systems is ***,this article discusses some basic concepts,seminal studies,recent advances,the structural design principles,as well as perspectives in the construction and applications of chiral polymers derived from achiral monomers,with the hope to attract more interest from researchers and further advance the development of chiral chemistry.

关键词： Chirality Chirality induction achiral polymer Supramolecular chemistry Self-assembly

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