Title:
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Conformational changes in matrix-isolated 6-methoxyindole: Effects of the thermal and infrared light excitations
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Author:
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Lopes Jesus, A. J.; Reva, I.; Araujo-Andrade, Cuauhtemoc; Fausto, R.
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Other authors:
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Universitat Politècnica de Catalunya. Institut de Ciències Fotòniques |
Abstract:
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Conformational changes induced thermally or upon infrared excitation of matrix-isolated
6-methoxyindole were investigated. Narrowband near-infrared excitation of the first overtone of
the N–H stretching vibration of each one of the two identified conformers is found to induce a
selective large-scale conversion of the pumped conformer into the other one. This easily controllable
bidirectional process consists in the intramolecular reorientation of the methoxy group and allowed a
full assignment of the infrared spectra of the two conformers. Matrices with different conformational
compositions prepared by narrow-band irradiations were subsequently used to investigate the effects
of both thermal and broadband infrared excitations on the conformational mixtures. Particular
attention is given to the influence of the matrix medium (Ar vs. Xe) and conformational effects of
exposition of the sample to the spectrometer light source during the measurements. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Física -Optics -infrared light -Òptica |
Rights:
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Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Document type:
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Article - Submitted version Article |
Published by:
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AIP
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