Light-Driven Chiral Switching of Supramolecular Metallacycles with Photoreversibility

被引：106

作者：

Li, Mengqi ^{[1
]}

Chen, Li-Jun ^{[2
]}

Cai, Yunsong ^{[1
]}

Luo, Qianfu ^{[1
]}

Li, Wenlong ^{[1
]}

Yang, Hai-Bo ^{[2
]}

Tian, He ^{[1
]}

Zhu, Wei-Hong ^{[1
]}

机构：

[1] East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr,Key L, Shanghai Key Lab Funct Mat Chem,Joint Int Res Lab, Shanghai 200237, Peoples R China

[2] East China Normal Univ, Chang Kung Chuang Inst, Shanghai Key Lab Green Chem & Chem Proc, Sch Chem & Mol Engn, Shanghai 200062, Peoples R China

来源：

CHEM | 2019年 / 5卷 / 03期

基金：

中国国家自然科学基金;

关键词：

IRREVERSIBLE PHOTOCHROMIC SYSTEMS; REVERSIBLE PHOTOCYCLIZATION; COORDINATION-COMPLEXES; TRANSITION; SEPARATION; MOLECULES; TRANSFORMATIONS; DIARYLETHENES; ARCHITECTURES; POLYHEDRA;

D O I：

10.1016/j.chempr.2018.12.006

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The construction of artificial chiral self-assembled systems has evolved to be one of the most attractive topics within supramolecular chemistry and materials science. However, stimuli-responsive chirality transcription with enantiospecific photoreversibility still remains challenging for chiral metallasupra-molecular structures because of the lack of appropriate building blocks. Herein, we present a chiral photoresponsive family of diarylethene-containing dipyridyl donors and their coordination-driven self-assembly behavior with the 120 degrees di-platinum(II) acceptor- The photochromic trimer units in the assembled metallacycles exhibit an unprecedented concerted photoconversion process without a step-by-step transformation. By taking advantage of the full-separated photoactive dipyridyl donor enantiomers based on the sterically hindered system, we have successfully achieved the phototriggered chirality transformation in supramolecular multi-dithienylethene metallacycles arising from axial helicity and central asymmetry, thereby establishing light-driven control in circular dichroism. Such unique photoreversible self-assembled metallacycles with photoinduced enantiospecificity enable the potential chemical platform for bistable chiroptical switching and non-destructive information encoding.

引用

页码：634 / 648

页数：15

共 72 条

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