Effects of Hydrogen Bonding on Tuning Photochemistry: Concerted Hydrogen-Bond Strengthening and Weakening

Effects of Hydrogen Bonding on Tuning Photochemistry: Concerted Hydrogen-Bond Strengthening and Weakening

Shifting H bonds: Concerted hydrogen‐bond strengthening and weakening in different excited states can tune energy gaps between low‐lying electronic states and thus account for the photochemistry of thiocarbonyl chromophores in alcoholic solutions (see picture). Also, the relationship between electro...

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Veröffentlicht in:Chemphyschem 2008-09, Vol.9 (13), p.1842-1846
Hauptverfasser: Zhao, Guang-Jiu, Han, Ke-Li
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Exact sciences and technology
General and physical chemistry
Hydrogen Bonding
hydrogen bonds
internal conversion
IR spectroscopy
Models, Chemical
Models, Molecular
Molecular Conformation
Photochemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
spectral shifts
Spectrum Analysis
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Zusammenfassung:Shifting H bonds: Concerted hydrogen‐bond strengthening and weakening in different excited states can tune energy gaps between low‐lying electronic states and thus account for the photochemistry of thiocarbonyl chromophores in alcoholic solutions (see picture). Also, the relationship between electronic spectral shifts and the electronic excited‐state hydrogen‐bonding changes is clarified.
ISSN:1439-4235
1439-7641
DOI:10.1002/cphc.200800371