Aminocarbonyl Fluorophores with a Strong Emissive Inverted Solvatochromism

J Phys Chem Lett. 2024 Nov 21;15(46):11671-11677. doi: 10.1021/acs.jpclett.4c02457. Epub 2024 Nov 14.

Abstract

Three aminocarbonyls were synthesized, and their emissive spectral behavior recorded at various solvent polarities showed marked inverted solvatofluorochromism. The emission energy inversion occurs at moderate solvent polarities and was found to be triggered by a change in the solute-solvent interaction responsible for the stabilization of the highly zwitterionic excited state of the dyes, from dipolarity to acidity.