文献类型：期刊文献

英文题名：Photo-Controllable F?rster Resonance Energy Transfer Based on Dynamic Chiral Self-Assembly of Sequence-Defined Amphiphilic Alternating Azopeptoids

作者：Jin, Haibao[1];Liu, Fan[1];Wu, Pengchao[1];Sun, Zichao[1];Sui, Pengliang[1];Cao, Yuanyuan[1];Zhou, Yongfeng[2];Lin, Shaoliang[1]

机构：[1]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China;[2]Shanghai Jiao Tong Univ, Frontiers Sci Ctr Transformat Mol, Sch Chem & Chem Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

年份：2025

卷号：21

期号：6

外文期刊名：SMALL

收录：;EI(收录号：20250317677343);WOS:【SCI-EXPANDED(收录号:WOS:001391838700001)】；

基金：H.B.J. and F.L. contributed equally to this work. Financial support was provided by the National Natural Science Foundation of China (52373114, 52325308, 22231007, 52073092, and 22001071). The authors thank the Research Center of Analysis and Test of East China University of Science and Technology for the help on the UPLC-MS characterization. The authors also appreciated Dr. Jiaping Lin and Dr. Chunhua Cai at the Shanghai Key Laboratory of Advanced Polymeric Materials at School of Materials Science and Engineering in East China University of Science and Technology for assistance with CD data collection.

语种：英文

外文关键词：amphiphilic alternating azopeptoids; chiral aggregate; chiral self-assembly; photo-controllable F & ouml;rster resonance energy transfer; photo-triggered structural transformation

摘要：Endowing biomimetic sequence-controlled polymers with chiral functionality to construct stimuli-responsive chiral materials offers a promising approach for innovative chiroptical switch, but it remains challenging. Herein, it is reported that the self-assembly of sequence-defined chiral amphiphilic alternating azopeptoids to generate photo-responsive and ultrathin bilayer peptoidosomes with a vesicular thickness of approximate to 1.50 nm and a diameter of around approximate to 290 nm. The photoisomerization of azobenzene moiety facilitates a reversible structural transformation from isotropic peptoidosomes to anisotropic 1D helical nanoribbons (approximate to 80 nm width) under the alternating irradiation with UV and visible lights, consequently leading to the chirality expression and transfer from chiral asymmetric center to achiral azobenzene units. As a biomimetic model with deformation-induced energy transfer, a non-invasive azobenzene-based F & ouml;rster resonance energy transfer system is unprecedentedly constructed via the introduction of a fluorescent donor of pyrene derivatives and sequentially photo-regulated the donor/acceptor ratio, displaying a reversible gradient fluorescent color variation from blue to yellow (a broad Stokes shift of approximate to 200 nm) and a high-efficient energy transfer efficiency of 97.2%. The photo-controllable photoluminescence phenomenon endows these chiral aggregates with a proof-of-concept application on multi-colored information encryption. This work provides a prospective strategy to fabricate stimuli-responsive chiral biomimetic materials with a potential on the light-controllable switches.