Tunable Pyridyl-Based Conjugated Microporous Polymers for Visible Light-Driven Hydrogen Evolution

被引:49
作者
Kotp, Mohammed G. [1 ]
Elewa, Ahmed M. [2 ]
EL-Mahdy, Ahmed F. M. [1 ]
Chou, Ho-Hsiu [2 ]
Kuo, Shiao-Wei [1 ,3 ]
机构
[1] Natl Sun Yat Sen Univ, Ctr Funct Polymer & Supramol Mat, Dept Mat & Optoelect Sci, Kaohsiung 80424, Taiwan
[2] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu 30013, Taiwan
[3] Kaohsiung Med Univ, Dept Med & Appl Chem, Kaohsiung 807, Taiwan
关键词
conjugated microporous polymer; H; 2; evolution; photocatalytic; triphenylpyridine; triphenylamine; areas; diverse compositional strategies; high charge mobilities; COVALENT ORGANIC FRAMEWORK; ENHANCED PHOTOCATALYTIC ACTIVITY; NITROGEN ATOM; FLUORESCENCE; PYRENE; DESIGN; WATER; TRIPHENYLAMINE; PERFORMANCE; METAL;
D O I
10.1021/acsaem.1c02772
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
Conjugated microporous polymers (CMPs) are promising light harvesters for photocatalytic H2 evolution because they are simple to prepare with various band gaps. To achieve CMPs displaying high photocatalytic performance, appropriate building blocks must be chosen. We prepared four kinds of triphenylpyridine-based CMPs (TPP-CMPs) through reactions with multibrominated monomers having different geometries [1,3,6,8-tetrabromopyrene (pyrene-4Br), pyridine (TPP-3Br), and 1,2,4,5-tetrabromobenzene (BZ-4Br), TPP, and TPP-benzene (BZ) CMPs, respectively]. This strategy allowed effective synthetic regulation of electron enrichment, porosities, and optoelectronic properties of the TPP-CMPs. The surface areas of the TPP-CMPs were high, up to 1370 m2 g-1, and had a high thermal stability. TPP-Py CMP displayed the highest photocatalytic performance with a H2 production rate of 18 100 mu mol g-1 h-1 under irradiation with visible light. Moreover, we achieved apparent quantum yields as high as 22.97% at 420 nm, comparable with those of most other CMPs reported previously.
引用
收藏
页码:13140 / 13151
页数:12
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