UNIGE document Scientific Article
previous document  unige:3174  next document
add to browser collection
Title

The photophysics of salicylic acid derivatives in aqueous solution

Authors
Pozdnyakov, Ivan P.
Tkachenko, Nikolai
Plyusnin, Victor F.
Lemmetyinen, Helge
Published in Journal of Physical Organic Chemistry. 2009, vol. 22, no. 5, p. 449-454
Abstract The photophysics of a number salicylic acid derivatives (SADs) in aqueous solutions was investigated in a wide range of pH by time-correlated single photon counting (ex = 350 nm, resp = 300 ps) and fluorescence up-conversion (ex = 266 nm, resp = 300 fs) techniques. The acid-base equilibrium constants in the ground (pKa) and the excited states ([]), the fluorescence quantum yields as well as the lifetimes of anionic, neutral, and cationic forms of SADs were determined. Evidence of ultrafast excited-state intramolecular proton transfer (ESIPT) leading to the formation of the proton-transferred excited state of SADs was obtained from the fluorescence up-conversion measurement. The nature of the ESIPT process is discussed.
Identifiers
Full text
Structures
Research group Groupe Vauthey
Citation
(ISO format)
POZDNYAKOV, Ivan P. et al. The photophysics of salicylic acid derivatives in aqueous solution. In: Journal of Physical Organic Chemistry, 2009, vol. 22, n° 5, p. 449-454. https://archive-ouverte.unige.ch/unige:3174

134 hits

144 downloads

Update

Deposited on : 2009-09-21

Export document
Format :
Citation style :