01.11.2020 Aggregation-induced emission of scandium complexes with 2-naphtoyltrifluoroacetone

Дата публикации:

by L. Mironov, A. Shurukhina, M. Krivchun, P. Parfenov, M. Rabchinskii, I. Kolesnikov, Z. Efimenko, M. Baranov

Journal of Photochemistry and Photobiology A: Chemistry

Vol. 402, 1 November 2020, 112826


AIEgens represent a special class of molecules, which are emissive in aggregated state, but show almost no fluorescence in dissolved form. Herein we report on the aggregation-induced emission properties of scandium complex with 2-naphtoyltrifluoroacetone ([Sc(NTA)3]). Fluorescence quantum yield of the complex increases ∼68 times, from 0.005 to 0.34, in aqueous solution by comparison with solution in dimethylformamide. This scandium complex is also emissive in powder form or as a film on a glass substrate, indicating that restriction of intramolecular motions facilitates complex fluorescence. The sensitized fluorescence of rhodamine 6 G and rhodamine B was observed in mixed aggregates of complexes and dyes showing the possibility to use [Sc(NTA)3] as efficient energy donor.

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