Journal
CHEMICAL PHYSICS LETTERS
Volume 484, Issue 4-6, Pages 354-357Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2009.11.029
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Funding
- NSC of Taiwan [NSC 98-2112-M-009-001-MY3]
- NCTU
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We have found that photo-excited indigo carmine causes stepwise proton transfer to generate mono-alcohol intermediate, which immediately returns to the parent molecule [I. Iwakura, A. Yabushita, T. Kobayashi, Chem. Lett. 38 (2009) 1020]. The kinetic isotope effect in the proton transfer of this system has been studied by direct observation of the real-time molecular vibrational amplitude during the reaction including the transition state using a sub-5-fs laser pulse. The k(a)(H)/k(a)(D) ratio for the proton transfer after photo-excitation is observed to be 1.5 +/- 0.1. (C) 2009 Elsevier B.V. All rights reserved.
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