文献类型：期刊文献

英文题名：Azobenzene-based ultrathin peptoid nanoribbons for the potential on highly efficient artificial light-harvesting

作者：Sun, Zichao[1];Zhu, Lingrong[1];Liu, Jingze[1];Liu, Fan[1];Wu, Pengchao[1];Sui, Pengliang[1];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

年份：2024

卷号：67

期号：5

起止页码：1680

外文期刊名：SCIENCE CHINA-CHEMISTRY

收录：;EI(收录号：20241215780331);WOS:【SCI-EXPANDED(收录号:WOS:001187444300001)】；

基金：This work was supported by the National Natural Science Foundation of China (22001071, 52373114, 52073092, 52325308) and Shanghai Scientific and Technological Innovation Project (19JC1411700). The authors also thank Dr. Xiaoling Yang at the National Demonstration Center for Experimental Material Education at the East China University of Science and Technology for assistance with XRD data collection and analysis.

语种：英文

外文关键词：azobenzene-based peptoid; ultrathin nanoribbon; photo-responsive; light-harvesting; information encryption

摘要：The development of artificial light-harvesting systems based on long-range ordered ultrathin organic nanomaterials (i.e., below 3 nm), which were assembled from stimuli-responsive sequence-controlled biomimetic polymers, remains challenging. Herein, we report the self-assembly of azobenzene-containing amphiphilic ternary alternating peptoids to construct photo-responsive ultrathin peptoids nanoribbons (UTPNRs) with a thickness of similar to 2.3 nm and the length in several micrometers. The pendants hydrophobic conjugate stacking mechanism explained the formation of one-dimensional ultrathin nanostructures, whose thickness was highly dependent on the length of side groups. The photo-isomerization of azobenzene moiety endowed the aggregates with a reversible morphology transformation from UTPNRs to spherical micelles (46.5 nm), upon the alternative irradiation with ultraviolet and visible light. Donor of 4-(2-hydroxyethylamino)-7-nitro-2,1,3-benzoxadiazole (NBD) and acceptor of rhodamine B (RB) were introduced onto the hydrophobic and hydrophilic regions, respectively, to generate photo-controllable artificial light-harvesting systems. Compared with the spheres-based systems, the obtained NBD-UTPNRs@RB composite proved a higher energy transfer efficiency (90.6%) and a lower requirement of RB acceptors in water. A proof-of-concept use as fluorescent writable ink demonstrated the potential of UTPNRs on information encryption.