文献类型：期刊文献

英文题名：Ultrathin Polymer Nanotubes Assembled from Side-Chain Amphiphilic Alternating Azocopolymers for the Potential of Highly-Efficient and Photo-Controllable Dye Removal

作者：Song, Qipeng[1];Wu, Pengchao[1];Liu, Fan[1];Sun, Zichao[1];Jiang, Caixia[1];Gao, Liang[1];Chen, Jianzhuang[1];Jin, Haibao[1];Lin, Jiaping[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：57

期号：12

起止页码：5892

外文期刊名：MACROMOLECULES

收录：;EI(收录号：20242516273814);WOS:【SCI-EXPANDED(收录号:WOS:001247118000001)】；

基金：Financial support was provided by the National Natural Science Foundation of China (52373114, 52325308, 52073092, and 22001071). Support by the Shanghai Scientific and Technological Innovation Project (19JC1411700) is also much appreciated. The authors also thank the Shanghai Synchrotron Radiation Facility (Beamline BL16B1) for assistance with WAXS data collection.

语种：英文

外文关键词：Adsorption - Aspect ratio - Azo dyes - Functional polymers

摘要：One-dimensional ultrathin organic nanotubes (UTONTs) are of favorable potential as absorbents due to their hollow nanostructures, high-aspect-ratio, large specific surface area, and tailorable functions. However, the development of polymer-based and stimuli-responsive UTONTs for highly efficient and controllable removal of pollutants remains challenging. Herein, we report the self-assembly of side-chain amphiphilic alternating azocopolymers to generate cationic and photoresponsive ultrathin polymer nanotubes (UTPNTs) with an average diameter of similar to 548 nm and a tubular wall thickness of similar to 2.8 nm. Owing to the photoisomerization of azobenzene units, a reversible transformation from the UTPNTs to ultrathin polymer vesicles (UTPVs, a vesicular thickness of 2.4 nm, a diameter of 115 nm) was achieved upon alterative irradiation with UV and visible light, proving the attractive photoresponsive feature. The proof-of-concept adsorption performance for both UTPNTs and UTPVs was evaluated toward the anionic dye Congo red, with a photocontrollable and highly efficient adsorption activity that was highly dependent on ultrathin hollow structures and electrostatic interactions. The as-prepared UTPNTs exhibited favorable adsorption capacity, with a large adsorption amount of 1248.3 mgg(-1) and a short equilibrium time of similar to 6 min, greater than that of UTPVs (638.2 mgg(-1)). Our work provides a simple strategy for generating stimuli-responsive UTONTs with desirable adsorption performance.