文献类型：期刊文献

中文题名：具有超宽光谱光致变色能力的单层亚纳米聚合物囊泡用于多色和多模式信息安全

英文题名：Monolayer subnanometric polymersomes with ultrabroad photochromism performance for multichromatic and multimodal information security

作者：Wu, Pengchao[1];Sun, Zichao[1];Li, Guodong[1];Xu, Zejiang[1];Sui, Pengliang[1];Cao, Yunqing[1];Ding, Mingyu[1];Zhou, Yongfeng[2];Lin, Shaoliang[1];Jin, Haibao[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：2026

外文期刊名：SCIENCE CHINA-MATERIALS

收录：;EI(收录号：20261420440095);WOS:【SCI-EXPANDED(收录号:WOS:001731137800001)】；

基金：This work was supported by the National Natural Science Foundation of China (52373114, 52325308, and 22231007). The authors thank the Research Center of Analysis and Test of East China University of Science and Technology for the help with the characterization. The authors thank Huasuan Technology for the help with the theoretical calculations of DFT.

语种：中文

外文关键词：multifunctional amphiphilic alternating copolymers; self-assembly; monolayer subnanometric polymersomes; photochromic F & ouml;rster resonance energy transfer; multichromatic and multimodal information encryption

摘要：Photochromic F & ouml;rster resonance energy transfer (pc-FRET)-based subnanometric polymersomes with accurate color control offer a transformative yet challenging tactic for advanced and custom-tailored information encryption. Herein, various amphiphilic alternating pyrene/azobenzene-containing copolymers were polymerized using one-pot Ugi four-component polycondensation. Subsequent self-assembly was performed to produce highly-integrated monolayer subnanometric polymersomes (MSNPSs) and their composites, with diameters of around similar to 250 nm and vesicular thicknesses of approximately similar to 12.0 & Aring;. J-aggregated monolayer chain-folding mechanism was accountable for the donor-acceptor-donor stacking manner within the vesicular membrane, beneficial to achieve highly efficient energy transfer. The trans-to-cis photoisomerization of azobenzenes rendered MSNPSs and their composites with photo-triggered structural transitions in diameter and vesicular thickness. Benefitting from considerable spectral overlap between cis-azobenzene and pyrene, MSNPSs and their composites were capable of photo-controllable non-invasive pc-FRET performance with a wide Stokes shift (similar to 320 nm). The accurate color variation from blue to red highly depended upon precise modulation of both irradiation duration and precursor-fixed donor/acceptor ratios. The proof-of-concept individually multichromatic 2D QR code was attained using photochromic MSNPSs and their composites in patterning lithography, displaying a multimodal decryption and favorable repeatability for high-level and personalized information protection. Our work paves a prospective avenue to meticulously craft stimuli-chromatic polymersomes for the potential of advanced information encryption.