Journal
ACS CATALYSIS
Volume 6, Issue 2, Pages 1113-1121Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.5b02490
Keywords
selective bromination; metal-free photocatalysis; microporous organic polymer; visible light; organic semiconductor
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Funding
- Max Planck Society
- China Scholarship Council (CSC)
- Excellence Initiative of the graduate school of excellence MAINZ (Materials Science in Mainz) [DFG/GSC 266]
- DAAD
- CAPES
- CNPq
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Pure organic, heterogeneous, metal-free, and visible light-active photocatalysts offer a more sustainable and environmentally friendly alternative to traditional metal-based catalysts. Here we report a series of microporous organic polymers containing photoactive conjugated organic semiconductor units as heterogeneous photocatalysts for a visible-light-promoted, highly selective bromination reaction of electron-rich aromatic compounds using HBr as a bromine source and molecular oxygen as a clean oxidant. Via a simple Friedel Crafts alkylation reaction, the microporous organic polymers were obtained by cross-linking of organic semiconductor compounds with defined valence and conduction band positions. The utilization of the simply prepared porous polymer-based photocatalytic systems opens new opportunities toward a sustainable and efficient material design for catalysis.
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