Modulating it-bridge in donor-it-acceptor covalent organic frameworks for low-energy-light-driven photocatalytic reaction

被引：0

作者：

Yang, Jiahuan ^{[1
]}

Chen, Yizheng ^{[2
]}

Xie, Xiangjing ^{[2
]}

Hu, Xiayi ^{[3
]}

Long, Bei ^{[1
]}

Ali, Atif ^{[5
,6
]}

Deng, Guo-Jun ^{[1
,4
]}

Song, Ting ^{[1
]}

机构：

[1] Xiangtan Univ, Key Lab Green Organ Synth & Applicat Hunan Prov, Key Lab Environm Friendly Chem & Applicat, Minist Educ,Coll Chem, Xiangtan 411105, Peoples R China

[2] Hunan Inst Engn, Intelligent Text Inst Innovat, Xiangtan 411104, Peoples R China

[3] Xiangtan Univ, Coll Chem Engn, Xiangtan 411105, Peoples R China

[4] Henan Normal Univ, Sch Chem & Chem Engn, Xinxiang 453007, Peoples R China

[5] Univ Hong Kong, Dept Chem, Pokfulam Rd, Hong Kong, Peoples R China

[6] Univ Hong Kong, State Key Lab Synthet Chem, Pokfulam Rd, Hong Kong, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2025年 / 683卷

关键词：

Covalent organic frameworks; it-bridge; Low energy light; C-O coupling reaction;

D O I：

10.1016/j.jcis.2024.12.203

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Most of the photocatalytic reactions are currently driven by high-energy light (UV, blue light), which inevitably leads to side reactions and co-catalyst deactivation. Therefore, there is an urgent need to prepare novel photocatalysts with low-energy photocatalytic properties. Herein, we report a rational molecular design of covalent organic frameworks (COFs) equipped with donor-it-acceptor systems with different it-bridges (aromatic ring, mono- and bis-alkynyl). It was found that the COF with mono-alkynes as a it-bridge (TP-EDAE) can accelerate the rapid carrier migration even under low-energy light compared to the other two types of it-bridges (aromatic ring and bis-alkynyl), which was conducive to the photocatalytic redox reactions. As a result, the TP-EDAE samples showed high C-O coupling activity and good substrate versatility under both high-energy light (blue light) and low-energy light (green light), especially the TP-EDAE samples displayed high stability with no obvious activity decay within five cycles under low-energy light. This work highlights the fundamental molecular design of advanced functionalized COFs with specific it-bridges for photocatalytic organic reactions under low-energy light.

引用

页码：612 / 621

页数：10

共 55 条

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