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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:
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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