THz Studies of Conductive Metal-Organic Frameworks

被引：0
|
作者：
Pattengale, Brian [1 ,2 ]
Okabe, Ryotaro [3 ]
Ostresh, Sarah [1 ,2 ]
Schmuttenmaer, Charles A. [1 ,2 ]
机构：
[1] Yale Univ, Dept Chem, New Haven, CT 06520 USA
[2] Yale Univ, Energy Sci Inst, New Haven, CT 06520 USA
[3] Tokyo Inst Technol, Yokohama, Kanagawa 2268501, Japan
来源：
2020 45TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2020年
关键词：
D O I：
10.1109/IRMMW-THZ46771.2020.9370705
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We report on the development of a light harvesting architecture based on a conductive metal organic framework (MOF) photosensitizer. The Zn2TTFTB (TTFTB = tetrathiafulvalene tetrabenzoate) MOF was deposited directly onto the metal oxide TiO2 and its structure was confirmed via pXRD and EXAFS measurements. Interfacial charge transfer dynamics were investigated using time-resolved THz spectroscopy. Sub-600 fs injection was observed for both the Zn2TTFTB-TiO2 and the TTFTB ligand-sensitized analog that lacks the extended MOF architecture. Rapid injection of a photo-generated electron is accompanied by facile migration of the corresponding hole away from the interfacial region leading to much longer recombination times in the Zn2TTFTB-TiO2 sample.
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