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Indexed by:期刊论文

Date of Publication:2016-01-01

Journal:JOURNAL OF MATERIALS CHEMISTRY A

Included Journals:SCIE

Volume:4

Issue:33

Page Number:12739-12747

ISSN No.:2050-7488

Abstract:We demonstrate the fabrication of a new class of epitaxial porphyrin metal-organic framework thin films whose photophysical properties can be tuned by the introduction of electron-donating diphenylamine (DPA) groups into the porphyrin skeleton. The attachment of DPA groups results in strongly improved absorption characteristics, yielding the highest photocarrier generation efficiency reported so far. DFT calculations identify a shift of the charge localization pattern in the VBM (lowest unoccupied molecular orbital), confirming that the introduction of the DPA groups is the main reason for the shift of the optical absorption spectrum and the improved photocurrent generation.