作者
Brian Pattengale, Jens Neu, Sarah Ostresh, Gongfang Hu, Jacob A Spies, Ryotaro Okabe, Gary W Brudvig, Charles A Schmuttenmaer
发表日期
2019/6/9
期刊
Journal of the American Chemical Society
卷号
141
期号
25
页码范围
9793-9797
出版商
American Chemical Society
简介
While metal–organic frameworks (MOFs) have been under thorough investigation over the past two decades, photoconductive MOFs are an emerging class of materials with promising applications in light harvesting and photocatalysis. To date, there is not a general method to investigate the photoconductivity of polycrystalline MOF samples as-prepared. Herein, we utilize time-resolved terahertz spectroscopy along with a new sample preparation method to determine the photoconductivity of Zn2TTFTB, an archetypical conductive MOF, in a noncontact manner. Using this technique, we were able to gain insight into MOF photoconductivity dynamics with subpicosecond resolution, revealing two distinct carrier lifetimes of 0.6 and 31 ps and a long-lived component of several ns. Additionally, we determined the frequency dependent photoconductivity of Zn2TTFTB which was shown to follow Drude–Smith behavior. Such …
引用总数
20192020202120222023202419179114
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