期刊
CRYSTENGCOMM
卷 18, 期 38, 页码 7269-7275出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ce00659k
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资金
- CNRS
- Institut Universitaire de France, Rennes Metropole
- ANR [ANR-13-BS04-0002]
- Europe (FEDER)
- University of Chicago
- Department of Energy [DE-AC02-06CH11357]
- National Institutes of Health [GM111072]
- NATIONAL EYE INSTITUTE [R01EY024363] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R24GM111072] Funding Source: NIH RePORTER
Spin-crossover crystals show multi-step responses to femtosecond light excitation. The local molecular photo-switching from low to high spin states occurs on the sub-picosecond timescale. It is followed by additional conversion due to elastic (ns) and thermal (mu s) effects. In [Fe(phen)(2)(NCS)(2)] crystals discussed herein, the thermal switching can be made unobtrusive for the investigation of cooperative elastic switching. We evidence a cooperative transformation induced by lattice expansion through elastic coupling between molecules in the crystal, where up to 3 molecules are transformed per photon.
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