Heterometal incorporation in NH2-MIL-125(Ti) and its participation in the photoinduced charge-separated excited state
- Rutgers Univ., New Brunswick, NJ (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
Optical and X-ray spectroscopy studies reveal the location and role of Fe3+ sites incorporated through direct synthesis in NH2-MIL-125(Ti). Fe K-edge XAS analysis confirms its metal–oxo cluster node coordination while time-resolved optical and X-ray transient absorption studies disclose its role as an electron trap site, promoting long-lived photo-induced charge separation in the framework. Notably, XTA measurements show sustained electron reduction of the Fe sites into the microsecond time range. Finally, comparison with an Fe-doped MOF generated through post-synthetic modification indicates that only the direct synthesis approach affords efficient Fe participation in the charge separated excited state.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357; SC0012704
- OSTI ID:
- 1774328
- Alternate ID(s):
- OSTI ID: 1657302
OSTI ID: 1688379
- Journal Information:
- ChemComm, Journal Name: ChemComm Journal Issue: 78 Vol. 56; ISSN 1359-7345
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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