A series of AlIII complexes of a salophen (N,N′-bis(salicylidene)-o-phenylenediamine) derivative with an ester substituent at the C5 position of the salicylidene rings have been prepared and their luminescence properties investigated. All exhibit a bright blue emission (λem = 478 nm) that is observed neither for other metal ions nor with the non-functionalized ligand. Moreover, the ester-R group (Me, tBu, Ph) was found to significantly affect the quantum yields (ϕ = 12 to 20%) of the luminophor. DFT calculations have been undertaken to reveal the influence of the ester and its R-group on the frontier molecular orbitals. Preparation and photoluminescence properties in solution and solid state are reported. The crystal structure of a pyridine oxide adduct [LtBuAl(PyO)2]·NO3, where LtBu stands for the tButyl-ester functionalized Schiff base, has been solved.
一系列铝(III)复合物,基于一种在
水杨醛环C5位置具有酯取代基的salophen(N,N′-双
水杨醛邻苯二胺)衍
生物,已经被制备,并研究了它们的发光性质。所有复合物均表现出明亮的蓝色发光(λem = 478 nm),这种发光在其他
金属离子或未功能化
配体中均未观察到。此外,酯-R取代基(Me、tBu、Ph)显著影响了发光体的量子产率(ϕ = 12%至20%)。进行了DFT计算以揭示酯及其R取代基对前沿分子轨道的影响。报告了溶液和固态下的制备及光致发光性质。已解析一种
吡啶氧化物加合物的晶体结构 [LtBuAl(PyO)2]·
NO3,其中LtBu表示功能化为t-丁基酯的Schiff碱。