点击次数：

论文类型： 期刊论文

发表时间： 2016-01-01

发表刊物： JOURNAL OF MATERIALS CHEMISTRY A

收录刊物： SCIE

卷号： 4

期号： 33

页面范围： 12739-12747

ISSN号： 2050-7488

摘要： 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.