In this study, a series of small molecules based on 3-(dimethylamino)-1-(2-hydroxyphenyl)-2-propen-1-one
have been prepared under mild reaction conditions. Most of the compounds showed high
fluorescence quantum yield in the solid-state (ΦFmax = 0.75). In addition, the fluorescence emission color was effectively and simply
changed by modifying the substituent on the aromatic ring. The crystalline state and
the photophysical properties of all the compounds in THF(DMF)/water mixtures were
investigated, exhibiting marked aggregation-induced enhanced emission characteristics.
The X-ray crystallographic analysis explained the different emissions of these compounds.
Key words
AIEE - solid-state fluorescence - color-tunable-emission - small molecules - high
fluorescence quantum yield