The Dynamics of Intramolecular Excited State Relaxation of N-Anthryl Substituted Pyridinium Cations View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2005-03

AUTHORS

Valery V. Volchkov, Mikhail N. Khimich, Nadezhda I. Makarova, Boris M. Uzhinov

ABSTRACT

N-(1-Anthryl)-2,4,6-trimethyl-pyridinium (I), N-(2-anthryl)-2,4,6-trimethyl-pyridinium (II) and 10-(1-anthryl)-1,2,3,4,5,6,7,8-octahydro-acridinium cations (III) with anomalously high fluorescence Stokes' shift have been investigated. Fluorescence kinetics analysis at various temperatures showed that in the range 293-77 K, the radiative deactivation rate constants (kf) increase by 5.5 to 30 times. The low-temperature time-resolved emission spectra of I-III were found to be consistent with the model: A--> A*<--> B* where A* is the local excited twisted form and B* is the relaxed more planar, bent conformer of the molecule. The rate constants of the excited relaxed state formation (k1) and back reaction (k-1) of compounds studied were estimated. More... »

PAGES

111-115

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10895-005-2517-3

DOI

http://dx.doi.org/10.1007/s10895-005-2517-3

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1046985021

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/15883764


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