This article is cited in 3 papers

Communications

Effect of micelles on pK_a* of acridine: a spectroscopic study

A. O. Naumova, A. K. Afanasyev, P. V. Melnikov, N. K. Zaitsev

M.V. Lomonosov Institute of Fine Chemical Technologies, MIREA - Russian Technological University, Moscow, Russian Federation

Abstract: The effect of anionic, nonionic and cationic surfactants on the protonation reaction of acridine in an excited state has been studied. In the case of sodium decyl sulfate and sodium dodecyl sulfate, the observed shift in pK * to a more alkaline region was +0.6 and +0.9 units (from 9.9 to 10.5 and 10.8 respectively), which corresponds to a decrease in the Gibbs free energy by 3.5 and 5.0 kJ mol^–1.

Keywords: fluorescence, photobase, protonation, photoinduced proton transfer, acid–base reaction, excited state, shift in equilibrium, surfactants, micelles.

Language: English

DOI: 10.1016/j.mencom.2021.11.021

Bibliographic databases:

•