Vapochromic Fluorescence Observed for Emitting Amorphous Molecular Materials: Synthesis and Emitting Properties of 3-{4-[Bis(4-methylphenyl)amino]phenylcarbonyl}-6-{4-[bis(4-methylphenyl)amino]phenyl}-3,5-dimethyl-3,4-dihydro-2H-pyran

摘要

In order to create novel vapochromic fluorescent amorphous molecular materials, title compound (BBMP) was synthesized and its emitting properties in solid states were investigated as well as in solution. It was found that BBMP exhibit solvatochromic fluorescence. BBMP was also found to exhibit fluorescence in solid states, the spectrum depending upon the morphology, and to exhibit mechanochromic fluorescence due to formation of glassy state by grinding the crystalline sample. And finally, BBMP film was found to exhibit vapochromic fluorescence. Two triphenylamine moieties with different structures in a BBMP molecule might play an important role for the difference between emitting properties in solution and in solid states.