Evolution of hollow nanosphere to microtube in the self-assembly of chiral dansyl derivatives and inversed circularly polarized luminescence

Sifan Du ¹Yuan Wang ²Fulin Wang ²Tianyu Wang ³Li Zhang ²Minghua Liu²

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作者信息

1. Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials,Department of Chemistry and Chemical Engineering,School of Chemistry and Biological Engineering,University of Science and Technology Beijing,Beijing 100083,China;National Laboratory for Molecular Science(BNLMS),CAS Key Laboratory of Colloid,Interface and Chemical Thermodynamics,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China
2. National Laboratory for Molecular Science(BNLMS),CAS Key Laboratory of Colloid,Interface and Chemical Thermodynamics,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China
3. Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials,Department of Chemistry and Chemical Engineering,School of Chemistry and Biological Engineering,University of Science and Technology Beijing,Beijing 100083,China
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Abstract

Here,we designed asymmetric(mDS)and symmetrical(dDS)chiral V-shaped molecules by linking one or two dansyl groups to trans-1,2-cyclohexane diamine and investigated the solvent-regulated struc-tural transformation and inversed circularly polarized luminescence(CPL)in the self-assemblies.Upon increasing water volume fraction(fw)in the mixed solvent of water/acetonitrile,asymmetric mDS self-assembled into hollow nanospheres and microtubes,while solid nanospheres and solid microplates were corresponding to symmetric dDS.During this transformation process,the emission of mDS and dDS was changed from yellow-green to blue and cyan color,which was ascribed to twisted intramolecular charge transfer(TICT)and locally excited(LE)fluorescence of V-shaped DS molecules.The conformation of N,N-dimethyl groups with respect to naphthalene ring also led to the transformation of structures.These tubular and platelike structures had stronger and reversed CPL signals in comparison with spheroidal structures.The chiral information of DS assembly could be effective transferred to achiral Nile red via co-assembly strategy,which endowed Nile red exhibiting inversed induced CPL signal regulated by water fraction.This work provides a method for achieving a variety of self-assembled structures with adjustable chiroptical properties.

Key words

CPL inversion/Hollow structure/Self-assembly/Dansyl/Chirality transfer

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基金项目

National Key R&D Program of China(2021YFA1200301)

National Natural Science Foundation of China(21890734)

National Natural Science Foundation of China(92156018)

National Natural Science Foundation of China(21972150)

CAS Project for Young Scientists in Basic Research(YSBR-027)

出版年

2024

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCDCSCD

影响因子：0.771

ISSN：1001-8417

参考文献量65

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