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Thermal cis-trans isomerization of solvatochromic merocyanines : linear correlations between solvent polarity and adiabatic and diabatic transition energies

Thermal cis-trans isomerization of solvatochromic merocyanines : linear correlations between solvent polarity and adiabatic and diabatic transition energies

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ABDEL-HALIM, Shakir T., Mahmoud H. ABDEL-KADER, Ulrich STEINER, 1988. Thermal cis-trans isomerization of solvatochromic merocyanines : linear correlations between solvent polarity and adiabatic and diabatic transition energies. In: Journal of Physical Chemistry. 92(15), pp. 4324-4328. ISSN 0022-3654. eISSN 1541-5740

@article{Abdel-Halim1988Therm-9997, title={Thermal cis-trans isomerization of solvatochromic merocyanines : linear correlations between solvent polarity and adiabatic and diabatic transition energies}, year={1988}, doi={10.1021/j100326a017}, number={15}, volume={92}, issn={0022-3654}, journal={Journal of Physical Chemistry}, pages={4324--4328}, author={Abdel-Halim, Shakir T. and Abdel-Kader, Mahmoud H. and Steiner, Ulrich} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/9997"> <dc:rights>deposit-license</dc:rights> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T18:15:52Z</dcterms:available> <dc:contributor>Abdel-Kader, Mahmoud H.</dc:contributor> <dcterms:title>Thermal cis-trans isomerization of solvatochromic merocyanines : linear correlations between solvent polarity and adiabatic and diabatic transition energies</dcterms:title> <dc:language>eng</dc:language> <dc:creator>Abdel-Kader, Mahmoud H.</dc:creator> <dc:creator>Steiner, Ulrich</dc:creator> <dcterms:bibliographicCitation>First publ. in: Journal of Physical Chemistry 92 (1988), 15, pp. 4324-4328</dcterms:bibliographicCitation> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T18:15:52Z</dc:date> <dcterms:rights rdf:resource="https://creativecommons.org/licenses/by-nc-nd/2.0/legalcode"/> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/9997"/> <dc:format>application/pdf</dc:format> <dcterms:abstract xml:lang="eng">The correlation between solvatochromy and the solvent-polarity-dependent rate constant k ct of thermal cis-trans isomerization (solvatokinetic behavior) has been investigated for a stilbazolium-type merocyanine and an amphiphilic analogue in a polarity series of eight neat solvents (protic and aprotic). At room temperature k ct varies over 7 orders of magnitude, decreasing with increasing solvent polarity. It has been demonstrated that the first transition energy ∆E max and the free activation enthalpy ∆G* ct of thermal cis-trans isomerization are linearly correlated with each other and with Dimroth s solvent polarity parameter E T. These observations and the solvent-polarity-dependent increase of absorption band width are explained in terms of a model emphasizing the strong coupling between molecular conformation, electronic charge distribution, and solvent polarization.</dcterms:abstract> <dcterms:issued>1988</dcterms:issued> <dc:contributor>Abdel-Halim, Shakir T.</dc:contributor> <dc:contributor>Steiner, Ulrich</dc:contributor> <dc:creator>Abdel-Halim, Shakir T.</dc:creator> </rdf:Description> </rdf:RDF>

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