文献类型：期刊文献

英文题名：Chiral Photoswitch with a Reversible Photofluorochromic Enhancement and Circularly Polarized Luminescence for Optical Encryption

作者：Liu, Fan[1];Cao, Yuanyuan[1];Sun, Zichao[1];Wu, Pengchao[1];Li, Guodong[1];Cai, Chunhua[1];Zheng, Yongli[2];Zhou, Yongfeng[2];Jin, Haibao[1];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, Sch Chem & Chem Engn, Frontiers Sci Ctr Transformat Mol, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

年份：2026

卷号：36

期号：1

外文期刊名：ADVANCED FUNCTIONAL MATERIALS

收录：;EI(收录号：20252918816102);WOS:【SCI-EXPANDED(收录号:WOS:001529862900001)】；

基金：F.L. and Y.C. contributed equally to this work. Financial support was provided by the National Natural Science Foundation of China (52325308, 52373114, 22231007, and 22472058). The authors thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the UPLC-MS characterization.

语种：英文

外文关键词：amphiphilic alternating azopeptoids; chiral self-assembly; chiroptical encryption; photo-controllable circularly polarized luminescence; photo-triggered structural transformation

摘要：Stimuli-responsive circularly polarized luminescence (CPL) based chiral encryption systems are demonstrated potential in anticounterfeit applications ranging from daily life to advanced security domains. However, the efficient communication between responsive elements, structure transitions, and optical performances toward dynamically reconfigurable chiroptical signals still remains a significant challenge in responsive CPL systems. Benefiting from the highly modularized designability of peptoids, this study designed a programmable CPL platform through light-driven structural reconfiguration of sequence-defined amphiphilic alternating azopeptoids (AAAPs). Atomically-precise synthesis enabled the optimize incorporation of azobenzene photoswitches and Rhodamine B with (R/S)-1-naphthylamine units within tailored AAAPs, which self-assembled into monodisperse peptoidosomes (323 nm diameter) with a vesicular thickness of approximate to 20.6 & Aring;. Due to the UV-triggered trans-to-cis isomerization of azobenzene units, the as-produced superstructure experienced a reversible structural evolution from isotropic vesicles to anisotropic helical nanoribbons (81.6 nm width), where the corresponding chiroptical responses (g(abs) = 6.9 x 10(-)(4)) are amplified and chiral fluorescence intensity are nearly enhanced twice via strong symmetry-breaking and dispersion-induced alleviation of quenching. This spatiotemporal modulation toward CPL-based inks generated photo-controllable anti-counterfeiting patterns, enabling high-contrast information concealment. The work establishes a prospective paradigm for adaptive chiral nanomaterials, offering transformative potential in anti-counterfeiting technologies and reconfigurable photonic systems.