Spectral Properties and Photodynamic Activity of Complexes of Polycationic Derivative of Fullerene C60 with Xanthene Dye Fluorescein

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

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Using spectrophotometry and stationary and kinetic fluorimetry, we have shown that xanthene dye fluorescein forms complexes with polycationic derivative of fullerene in aqueous solutions mainly due to electrostatic interactions. It is found that efficient quenching of singlet excited states of dye occurs in the structure of these complexes due to the transfer of excitation or electron from dye to fullerene. As a result, the photodynamic activity of the newly formed complex is much higher than that of fluorescein and fullerene derivative. This effect makes it possible to predict the formation of new-generation hybrid photodynamic preparations using dyes excited only into a singlet state; as a result, directed searches for these dyes are significantly facilitated.

Original languageEnglish
Pages (from-to)379-385
Number of pages7
JournalOptics and Spectroscopy
Volume120
Issue number3
DOIs
Publication statusPublished - 1 Mar 2016
Externally publishedYes

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