Diketopyrrolopyrrole-Based Donor–Acceptor Conjugated Microporous Polymers for Visible-Light-Driven Photocatalytic Hydrogen Production from Water,Macromolecules

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Diketopyrrolopyrrole-Based Donor–Acceptor Conjugated Microporous Polymers for Visible-Light-Driven Photocatalytic Hydrogen Production from Water
Macromolecules ( IF 5.1 ) Pub Date : 2020-04-01 , DOI: 10.1021/acs.macromol.9b02488
Wen-Jing Xiao ₁ , Yong Wang _{1,

2} , Wen-Rui Wang _{1,

3} , Jia Li ₄ , Jiandong Wang ₁ , Zi-Wen Xu ₁ , Jingjing Li ₂ , Jianhua Yao _{2,

4} , Wei-Shi Li _{1,

2}

Affiliation

Developing efficient and wide spectrally acting photocatalysts for light-driven hydrogen production from water is highly desirable for solar energy conversion. Herein, diketopyrrolopyrrole (DPP) is used to combine with triphenylamine (TPA), bipyridyl (bdy), and biphenyl (bph) units for construction of conjugated microporous polymer photocatalysts. Although the synthesized two polymers, DPP-bdy-TPA and DPP-bph-TPA, have a similar framework structure, the former bearing a hydrophilic bipyridyl unit displays much better photocatalytic performance with hydrogen production rates of 6918 and 2780 μmol g^–1 h^–1 under a full-arc xenon lamp and visible light (>440 nm) illumination, respectively. Moreover, DPP-bdy-TPA has a wide photoaction spectrum with apparent quantum yields of 9.60% at 420 nm, 7.32% at 500 nm, and 0.31% at 600 nm, the so high values rarely achieved by present-known organic semiconductor photocatalysts. These results undoubtedly prove DPP is an excellent building block, and this work well exemplifies its utilization for construction of high-performance photocatalysts.

中文翻译：

基于二酮吡咯并吡咯的供体-受体共轭微孔聚合物，用于可见光驱动的水中光催化产氢

对于太阳能转化，非常需要开发有效的和具有广谱作用的光催化剂，以从水中光驱动制氢。在此，二酮吡咯并吡咯（DPP）与三苯胺（TPA），联吡啶（bdy）和联苯基（bph）单元结合使用，以构建共轭微孔聚合物光催化剂。尽管合成的两种聚合物DPP-bdy-TPA和DPP-bph-TPA具有相似的骨架结构，但带有亲水性联吡啶单元的前者显示出更好的光催化性能，氢气产生速率为6918和2780μmolg ^–1 h ^{– 1个}分别在全弧氙气灯和可见光（> 440 nm）照明下。而且，DPP-bdy-TPA具有宽的光作用谱，在420nm处的表观量子产率为9.60％，在500nm处的表观量子产率为7.32％，在600nm处的表观量子产率为0.31％，如此高的值几乎不能通过已知的有机半导体光催化剂实现。这些结果无疑证明了DPP是一个极好的构建基块，并且这项工作很好地例证了其在高性能光催化剂的构建中的利用。

更新日期：2020-04-24

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