期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 39, 页码 11368-11386出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201502974
关键词
femtosecond two-dimensional spectroscopy; merocyanines; molecular switches; photochemistry; time-resolved; spectroscopy
资金
- Bavarian research network Solar Technologies Go Hybrid
- DFG (Deutsche Forschungsgemeinschaft) within Research Unit Light-Induced Dynamics in Molecular Aggregates [FOR 1809]
- DFG within Emmy-Noether program
- Cluster of Excellence RESOLV [EXC 1069]
Coherent multidimensional electronic spectroscopy can be employed to unravel various channels in molecular chemical reactions. This approach is thus not limited to analysis of energy transfer or charge transfer (i.e. processes from photophysics), but can also be employed in situations where the investigated system undergoes permanent structural changes (i.e. in photochemistry). Photochemical model reactions are discussed by using the example of merocyanine/spiropyran-based molecular switches, which show a rich variety of reaction channels, in particular ring opening and ring closing, cis-trans isomerization, coherent vibrational wave-packet motion, radical ion formation, and population relaxation. Using pump-probe, pump-repump-probe, coherent two-dimensional and three-dimensional, triggered-exchange 2D, and quantum-control spectroscopy, we gain intuitive pictures on which product emerges from which reactant and which reactive molecular modes are associated.
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