Novel fluorescent dyes, thiazole boron complexes bearing beta-ketoiminate ligands, have been synthesized, and their fluorescence properties were investigated. The BF2 complexes showed a pronounced aggregation-induced emission enhancement effect because of the restriction of C-Ph intramolecular rotation. The BPh2 complexes showed higher fluorescence quantum yields than the corresponding BF2 complexes, both in solution and in the solid state.
Organoboron luminophores with extremely strong dual–phase emissions
charge transfer (ICT) effect ensured that HN4 could give rise to extremely strong emission in any solution (QY up to 99%). X-ray crystallographic analysis showed that the twisted core structure constructed by the boronic coordination of two penta-fluorobenzene of HN4 was responsible for intenseemission in the solidstate (QY up to 68%). Besides, HN4 exhibited a unique response to mechanical force accompanied