Investigation of the Spectral Properties of Noncovalent Complexes of a Polysubstituted Water-Soluble Derivative of the C60 Fullerene and Chlorin e6 in Polar Solvents

N. S. Goryachev, A. Yu Belik, A. Yu Rybkin, P. A. Mikhailov, O. A. Kraevaya, P. A. Troshin, A. I. Kotel’nikov

Research output: Contribution to journalArticlepeer-review

Abstract

Abstract: Using methods of absorption and fluorescence spectroscopy, we show that noncovalent complexes based on a water-soluble fullerene derivative and chlorin e6 dissolved either in water or in ethanol are formed as a result of electrostatic interactions. The formation of these complexes causes a red shift of the absorption spectrum of chlorin e6 and efficient quenching of the intensity of its fluorescence. The Stern–Volmer quenching constants of complexes in water and ethanol are 7.3 × 105 and 2 × 105 M–1, respectively. We show that, in an aqueous solution, the complex consists, on average, of one molecule of the water-soluble fullerene derivative and three dye molecules, whereas this ratio in ethanol is 1 : 1.

Original languageEnglish
Pages (from-to)629-633
Number of pages5
JournalOptics and Spectroscopy
Volume126
Issue number6
DOIs
Publication statusPublished - 1 Jun 2019

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