Zhilin Xu , Xu Cui , Yanhui Li , Yanwei Li , Zhenjun Si , Qian Duan
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引用次数: 6
Abstract
A crystalline, bi-photoelectric structural unit 2D periodic square lattice covalent organic framework was designed and target synthesized by the Schiff base condensation between 1,1,2,2-tetra(4-formyl-(1,1′-biphenyl)) ethene and 5,10,15,20-tetrakis(4-amino phenyl)-21H,23H-porphyrin with AA stacking structures, named as TP-COF. The TP-COF exhibited good photoelectric response combined with good crystallinity and high specific surface area (1812 m2 g−1). TP-COF with an optical bandgap of 1.80 eV can be used as a visible light responsive photocatalyst, and the speed of hydrogen evolution by TP-COF could achieve up to 58.4 μmol g−1h−1 under visible light irradiation. The efficient photocatalysis performance could be attributed to the photogenerated charge separation and transport of TP-COF by the fluorescence resonance energy transfer (FRET) from tetraphenylethylene to porphyrin. The successful preparation of this type of COF according to the designed structure provides a new way to realize photocatalyst targeting synthesis for better photocatalysis.
期刊介绍:
Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.