Determination of excited state dipole moments in solution via thermochromic methods

Autor: Mirko Matthias Lindic, Matthias Zajonz, Marie-Luise Hebestreit, Michael Schneider, W. Leo Meerts, Michael Schmitt
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: MethodsX, Vol 7, Iss , Pp 101101- (2020)
Druh dokumentu: article
ISSN: 2215-0161
DOI: 10.1016/j.mex.2020.101101
Popis: The method basically combines the existing ideas of excited state dipole moment determination via thermochromic fluorescence spectroscopy with the determination of the solvent cavity volume via concentration dependent density measurements of the solution densities at different weight fractions. Additionally, the determination of the cavity volume in dependence of the solvent temperature is included here, which provides a better accuracy of the excited state dipole moment determination. With this step two major sources of errors are eliminated: the use of the very imprecise Onsager radius and the assumption, that the cavity size is temperature independent. • Thermochromic absorption and fluorescence spectroscopy. • Cavity volume determination by density measurements. • Temperature dependent cavity volume determination.
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