Synthesis and fluorescence photoswitching of a diarylethene derivative having a dibenzoylmethanato boron difluoride complex

摘要

A fluorescent diarylethene derivative covalently linked to a dibenzoylmethanato boron difluoride complex (DAE-BF 2 DBM dyad 1) was synthesized and its fluorescence photoswitching properties were examined in solution, in nanoparticles and in powder solid. DAE-BF 2 DBM dyad 1 underwent reversible fluorescence photswitching associated with the photochromic reactions in THE solution as well as in the solid states such as nanoparticles and powders upon alternate irradiation with ultraviolet (UV) and visible light. In addition, the efficient fluorescence photoswitching property based on the intermolecular energy transfer process in the densely packed solid states was clearly observed. (C) 2020 Elsevier Ltd. All rights reserved.