Construction of a Porphyrin-Based Nanohybrid as an Analogue of Chlorophyll Protein Complexes and Its Light-Harvesting Behavior Research

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• 作者：Xingming Ning ; Liang Ma ; Shouting Zhang ; Dongdong Qin ; Duoliang Shan ; Yaqi Hu ; Xiaoquan Lu
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：January 21, 2016
• 年：2016
• 卷：120
• 期：2
• 页码：919-926
• 全文大小：528K
• ISSN：1932-7455

文摘

Inspired by the spatial elaborate architecture and the kinetics characteristic of the nature photosynthesis, a nanohybrid of Au@THPP/CNTs with columnar-like shape has been prepared by a combination of the gold-4-hydroxyphenyl porphyrin nanohybrid of core–shell structure (Au@THPP) and vertically aligned carbon nanotubes (CNTs) grown on a transparent conducting substrate. A simplified model to uncover the partial electron transfer (ET) of photosystem II (PSII) using the nanohybrid by the chemical approach has been set up. The UV–vis/scanning electrochemical microscopy (UV–vis/SECM) platform, a simple, effective, and novel electrochemistry method, was used to investigate the behavior of photoinduced electron transfer of the model. At 560 nm wavelength, the heterogeneous electron transfer rate constant (k_eff) of this model is the highest, which is consistent with the maximum absorption wavelength of a different chromophore achieved in photosynthesis. The model is not only of great value to study the complex photosynthesis but also of potential application in a biomimetic system.