文献类型：期刊文献

英文题名：Charge Transport Pathways in Vinylene-Linked Donor-Acceptor Covalent Organic Frameworks Strongly Influence the Performance of Photocatalysis

作者：Zhu, Hao[1];Hu, Xiang[1];Wang, Jinghui[1];Zhu, Lin[1,2];Liang, Qifeng[1];Zhang, Fan[2]

机构：[1]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China;[2]Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China

年份：2025

外文期刊名：ACS APPLIED POLYMER MATERIALS

收录：SCI-EXPANDED(收录号：WOS:001526318700001)、、EI(收录号：20252818753294)、Scopus(收录号：2-s2.0-105010125220)、WOS

语种：英文

外文关键词：hydrogen peroxide; vinylene-linked COFs; photocatalysis; donor-acceptor(D-A) type COFs; coordination

外文摘要：Vinylene-linked covalent organic frameworks (COFs) have shown great potential in photocatalysis due to their remarkable stability and extensive pi-delocalization. Incorporating donor-acceptor (D-A) structures in vinylene-linked COFs is a promising strategy to further enhance their photocatalytic performance. However, the charge transport pathways within D-A COFs and their effects on photocatalytic efficiency remain poorly understood. In this study, a vinylene-linked D-A COF was synthesized and its photocatalytic performance was evaluated, which exhibited excellent efficiency. To further investigate its properties, the COF was coordinated with three metal ions, Co(II), Fe(III), and Cr(III), which led to a substantial decline in photocatalytic activity, with reductions ranging from 54 to 88%. To determine the cause of this performance deterioration, various analytical tests, including electrochemical and zeta-potential analyses, were conducted. Our results revealed that charge transfer pathways play a crucial role in influencing the photocatalytic efficiency of D-A COFs, underscoring the importance of rational design strategies for optimizing their performance.