Triphenylamine-based N,O-bidentate BF2 complexes: synthesis and photophysical properties

N , O -bidentate BF 2 dyes (TTBKI-1 and TTBKI-2) with D–π–A structures were designed and synthesized by combining an electron-donating triphenylamine unit, a π-conjugated thiophene unit, and an electron-accepting NBF 2 O moiety.