Aggregation-induced emission of scandium complexes with 2-naphtoyltrifluoroacetone

Leonid Yu Mironov, Anna V. Shurukhina, Maxim N. Krivchun, Peter S. Parfenov, Maxim K. Rabchinskii, Ilya E. Kolesnikov, Zarina M. Efimenko, Mikhail A. Baranov

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number112826
JournalJournal of Photochemistry and Photobiology A: Chemistry
Early online date5 Aug 2020
StatePublished - Nov 2020

Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Physics and Astronomy(all)


  • Aggregation-induced emission
  • Coordination compounds
  • Fluorescence


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