diamidocarbene (DAC*), along with carbazolyl (Cz) as well as mono- and dicyano-substituted Cz derivatives. The emission color can be systematically varied over 270 nm, from violet to red, through proper choice of the acceptor (carbene) and donor (carbazolyl) groups. The compounds exhibit photoluminescent quantum efficiencies up to 100% in fluid solution and polystyrene films with short decay lifetimes
研究了一系列六种发光的双配位 Cu(I) 配合物,它们带有非常规的 N-杂环卡宾
配体、单酰
氨基-
氨基卡宾 (MAC*) 和二酰
氨基卡宾 (
DAC*),以及
咔唑基 (Cz) 以及单
氰基和双
氰基-取代的Cz衍
生物。The emission color can be systematically varied over 270 nm, from violet to red, through proper choice of the acceptor (carbene) and donor (carbazolyl) groups. 这些化合物在流体溶液和聚
苯乙烯薄膜中表现出高达 100% 的光致发光量子效率,并具有较短的衰变寿命 (τ ≈ 1 μs)。Cu(I) 配合物的辐射速率常数 (kr = 105-106 s-1) 与使用贵
金属(如 Ir 和 Pt)的最先进的
磷光发射体相当。由于基态的大偶极