励起状態分子内プロトン移動を示す高効率蛍光体の設計追究と液晶場における発光特性

抄録

Excited-State Intramolecular Proton Transfer (ESIPT) is a process in which photoexcited molecules relax their energy through tautomerization by transfer of protons, resulting in the emission with a large Stokes shift from the tautomeric excited species. We have developed highly fluorescent ESIPT luminophores as a dopant for nematic LCs and disclosed their important properties-(i) high miscibility in host LCs, (ii) high fluorescent quantum yield over the visible region in host LCs, (iii) absorption window in visible region, (iv) lack of self-absorption, (v) lack of aggregation-cased emission quenching. The molecular design strategy and photophysical properties in LCs will be discussed in this lecture.