已经合成并表征了一系列十二个形式为(N ^ N ^ N)PtX的铂(II)配合物,其中N ^ N ^ N是1,3-双(2-吡啶基氨基)异吲哚酸酯配体(BPI)或BPI配体其芳基部分被叔取代-丁基,硝基,烷氧基,碘或氯基,并且X是氯,氟,氰基,乙酸酯,苯基或4-(二甲基氨基)苯基配体。所有络合物在电势下显示至少一个不可逆的氧化和两个可逆的还原波,其电势取决于X和取代的N ^ N ^ N配体两者的位置和给电子或吸电子的性质。从配合物中观察到宽范围的室温磷光,能量范围为594至680 nm,量子效率范围为0.01至0.05。发射效率主要由非辐射过程决定,因为非辐射失活的速率常数[(1.1–100)×10 5 s -1 ]显示出比辐射衰变[(0.57–4.0)×0 4 s -1 ]大的变化率。]。X = Cl的化合物的非辐射失活遵循能隙定律,即,非辐射速率常数随发射能量的降低呈指数增长。激发态的失
Improved process for producing 1,3-bis(2-pyridylimino)isoindolines and compositions containing transition metal complexes thereof
申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0048024A1
公开(公告)日:1982-03-24
There are disclosed an improved process for preparing a composition consisting essentially of at least one transition metal complex of a 1,3-bis(2-pyridylimino)isoindoline comprising contacting in a molten phase a 1,2-dicyanobenzene with at least one 2-aminopyridine in the presence of a transition metal complex and an improved process for preparing the 1,3-bis(2-pyridylimino)isoindoline ligand from the same starting materials comprising contacting in a molten phase said starting materials, optionally in the presence of an alkaline earth metal carbonate.