Enhanced visible-light hydrogen evolution by conjugation and methyl engineering in sulfone-containing β-Ketoenamine COFs

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-07-08 DOI:10.1016/j.matlet.2025.139070

Yusei Kobayashi , Ikki Tateishi , Monir Uzzaman , Hideyuki Katsumata , Mai Furukawa , Satoshi Kaneco

引用次数: 0

Abstract

Sulfone-containing β-ketoenamine COFs (Covalent Organic Frameworks) with varying linker structures were synthesized using Tp as the backbone to investigate their photocatalytic hydrogen evolution activity. Among them, TpTSN-COF, featuring extended π-conjugation and methyl groups, showed a stable hydrogen evolution rate of 6590 μmol g^-1h⁻¹ under visible light twice the rate of TpBS-COF (without methyl groups) and over 600 times higher than that of TpSDA-COF (without conjugate extension and methyl groups). The enhanced performance is attributed to reduced charge recombination via conjugate extension and improved charge transfer enabled by introduction of methyl group.

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用偶联和甲基工程技术增强含砜β-酮胺COFs的可见光析氢

以Tp为骨架合成了不同连接结构的含砜β-酮胺共价有机骨架（COFs），研究了其光催化析氢活性。其中，具有扩展π共轭和甲基的TpTSN-COF在可见光下的稳定析氢速率为6590 μmol g-1h−1，是不含甲基的TpBS-COF的2倍，是不含共轭扩展和甲基的TpSDA-COF的600多倍。性能的提高是由于通过共轭扩展减少了电荷重组和引入甲基使电荷转移得到改善。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive