Synthesis, Crystal Structure and Photophysical Property of 4-(9-Oxoacridin-10(9H)-yl) Benzonitrile

摘要

A purely organic compound,4-(9-oxoacridin-10(9H)-yl) benzonitrile (1),was synthesized and characterized by NMR,UV-Vis,high resolution mass spectrum,and X-ray single-crystal structure analysis.It crystallizes in monoclinie system,space group P21/c with a =9.7420(2),b =10.4967(2),c =14.3896(3) (A),β =104.755(2)°,V=1422.94(5),Z =4,Mr =296.32,Dc =1.383 g/cm3,F(000) =616,μ =0.690 mm-1,GOOF =1.035,the final R =0.0370 and wR =0.1010 for 2649 observed reflections with 1 ＞ 2σ(1).Compound 1 in tolune exhibits deep blue luminescence with maximum emission peaks at 403 and 419 nm,lifetimes of 3.8 ns and quantum yields of φ =0.46 at room temperature.The experimental and computational results show that the emission of the compound originates from the acridinone moiety and has π-π* character.