Acid–base properties of 3,5-dimethyl-1,7-diphenyl derivative of bis-pyrazolopyridine in non-aqueous solutions

Autor: Stanisław Styrcz, Andrzej Danel, Wojciech Boszczyk, Yuriy Stepanenko, Danuta Grabka, Marta Kubik, Krystyna Rotkiewicz
Rok vydání: 2006
Předmět:
Zdroj: Journal of Photochemistry and Photobiology A: Chemistry. 180:80-87
ISSN: 1010-6030
DOI: 10.1016/j.jphotochem.2005.09.026
Popis: Acid–base properties of 3,5-dimethyl-1,7-diphenyl-bis-pyrazolo-[3,4-b;4′,3′- e ]-pyridine (BPP) in the ground state and in the first excited singlet state were investigated in non-aqueous solutions. Absorption and stationary fluorescence spectroscopy, supersonic jet spectroscopy as well as the calculations of effective valence potentials were applied as methods. The sequence of the protonation of BPP nitrogen atoms in solutions and the formation of complexes with water in molecular beams were discussed.
Databáze: OpenAIRE