Femtosecond pump - probe spectroscopy reveals the photo-excited state and charge transfer of a photocatalytic metal-organic framework

M. A. Van Der Veen, K. Mazur, M. Nasalevich, M. Hurkmans, J. Gascon, F. Kapteijn, A. Houtepen, F. Grozema, M. Bonn, J. Hunger

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Metal-organic frameworks are nanoporous materials recently shown capable of photocatalysis. To optimize them as photocatalysts we need to understand the charge transfer to species included in the pores. We measured for the first time with femtosecond pump-probe spectroscopy the metal-organic framework NH2-MIL-125. We found that the after photoexcitation the hole resides on -NH2. Charge transfer from the MOF to an occluded molecule capable to shuttle single charges to a reaction centre is extremely fast (< 200 fs) while charge recombination only occurs on the ns-μs time scale.

Original languageEnglish (US)
Title of host publication19th International Conference on Ultrafast Phenomena, UP 2014
PublisherOptical Society of American (OSA)
ISBN (Print)1557522790, 9781557522795
StatePublished - 2014
Externally publishedYes
Event19th International Conference on Ultrafast Phenomena, UP 2014 - Okinawa, Japan
Duration: Jul 7 2014Jul 11 2014

Conference

Conference19th International Conference on Ultrafast Phenomena, UP 2014
CountryJapan
CityOkinawa
Period07/7/1407/11/14

ASJC Scopus subject areas

  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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