Highly Luminescent Tetradentate Bis-Cyclometalated Platinum Complexes: Design, Synthesis, Structure, Photophysics, and Electroluminescence Application
作者:Dileep A. K. Vezzu、Joseph C. Deaton、James S. Jones、Libero Bartolotti、Caleb F. Harris、Alfred P. Marchetti、Marina Kondakova、Robert D. Pike、Shouquan Huo
DOI:10.1021/ic1002226
日期:2010.6.7
ne (L2), N,N-di(3-(pyridin-2-yl)phenyl)aniline (L3), N,N-di(3-(1H-pyrazol-1-yl)phenyl)aniline (L4), N,N-di(3-(3-methyl-1H-pyrazol-1-yl)phenyl)aniline (L5), and N,N-di(3-(4-methyl-1H-pyrazol-1-yl)phenyl)aniline (L6) undergo cyclometalation to produce two types of tetradentate bis-cyclometalated platinum(II) complexes: C∧N*N∧C platinum complexes 1 and 2 and N∧C*C∧N platinum complexes 3−6, respectively
N,N-二(6-苯基吡啶-2-基)苯胺(L1),N,N-二(6-(2,4-二氟苯基)吡啶-2-基)苯胺(L2),N,N-二(3-(吡啶-2-基)苯基)苯胺(L3),N,N-二(3-(1 H-吡唑-1-基)苯基)苯胺(L4),N,N-二(3- (3-甲基-1 H-吡唑-1-基)苯基)苯胺(L5)和N,N-二(3-(4-甲基-1 H-吡唑-1-基)苯基)苯胺(L6)经历环金属化,以产生两种类型的四齿双-环金属化铂(II)配合物:C ∧ N * N ∧ c ^铂络合物1和2和N ∧ C * C ^ ∧ Ñ铂络合物3 - 6,分别,其中一个“X ∧Y ”(X,Y = C或N)表示与铂的二齿配位以形成五元金属环,“ X * Y”表示配位以形成六元金属环。的晶体结构1,3,及5由单晶X射线衍射分析确定,显示出扭曲的正方形平面几何形状,即两个C∧N配位部分被扭曲。配合物5表现出更大的畸变,与平均NCCNPt配位平面的最大偏差为0