期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 4, 页码 1869-1874出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202014408
关键词
charge transfer; covalent organic frameworks; donor– acceptor; hydrogen production; solar energy harvesting
资金
- National Key Research and Development Program of China [2017YFA0206500]
- National Natural Science Foundation of China [21522105, 21871281, 51861145313]
- Science & Technology Commission of Shanghai Municipality [17JC1404000]
- ShanghaiTech-SARI Joint Laboratory of Low-Carbon Energy Science and Analytical Instrumentation Center, SPST, ShanghaiTech University [SPST-AIC10112914]
The 2D covalent organic framework PyTz-COF shows exceptional optoelectronic properties, photocatalytic ability, and photoelectrochemical activity, making it suitable for solar energy harvesting and conversion.
2D covalent organic frameworks (COFs) could have well-defined arrangements of photo- and electro-active units that serve as electron or hole transport channels for solar energy harvesting and conversion, but their insufficient charge transfer and rapid charge recombination impede the sunlight-driven photocatalytic performance. We report a new donor-acceptor (D-A) system, PyTz-COF that was constructed from the electron-rich pyrene (Py) and electron-deficient thiazolo[5,4-d]thiazole (Tz). With its bicontinuous heterojunction, PyTz-COF demonstrated exceptional optoelectronic properties, photocatalytic ability in superoxide anion radical-mediated coupling of (arylmethyl)amines and photoelectrochemical activity in sunlight-driven hydrogen evolution. Remarkably, PyTz-COF exhibited a photocurrent up to 100 mu A cm(-2) at 0.2 V vs. RHE and could reach a hydrogen evolution rate of 2072.4 mu mol g(-1) h(-1). This work is paving the way for reticular design of highly efficient and highly active D-A systems for solar energy harvesting and conversion.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据