Controlling Photochemistry via Isotopomers and IR Pre-excitation.
J Am Chem Soc
; 140(3): 926-931, 2018 01 24.
Article
en En
| MEDLINE
| ID: mdl-29182322
ABSTRACT
It is a photochemist's dream to be able to photoinduce a reaction of a specific molecular species in an ensemble of similar but not identical ones. The problem is that similar molecules often exhibit nearly identical UV-Vis absorption spectra, making them difficult or impossible to distinguish or to select spectroscopically. The ultrafast VIPER (VIbrationally Promoted Electronic Resonance) pulse sequence allows to pick a single species for electronic excitation based on its infrared spectrum. The latter usually shows more features, allowing the discrimination between species than the UV-Vis spectrum. Here, we show that it is possible to induce and monitor species-selective photochemistry even for molecules with virtually identical UV-Vis spectra, which is the case for isotopomers. Next to isotope-selective photochemistry in solution, applications to orthogonal photo-uncaging and species-selective spectroscopy and photochemistry in mixtures are within reach.
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MEDLINE
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En
Revista:
J Am Chem Soc
Año:
2018
Tipo del documento:
Article
País de afiliación:
Alemania