亚甲基蒽苯乙烯吡啶盐的合成、结构及双光子吸收性质

Synthesis,Crystal Structure and Third-Order Nonlinear Optical Properties of Methanoanthracene-stilbazolium Tetraphenylborate

以氯化4-甲基-N-9-亚甲基蒽吡啶盐为原料,合成了一种新型的苯乙烯吡啶盐,通过红外、核磁共振氢谱、碳谱、电喷雾质谱、单晶X射线衍射等测试技术对化合物的结构进行了表征。单晶X射线衍射结果表明,该化合物属于单斜晶系,空间群为P21/c,晶胞参数a=1.255 7(1)nm,b=1.539(1)nm,c=2.220 2(8)nm,β=101.099(1)°,V=4.210 5(4)nm3,Z=4,Dc=1.159 g/cm3。用1 064 nm皮秒脉冲激光研究其三阶非线性光学特性,双光子吸收系数β=0.028 cm/GW,吸收截面为σ=8.68×10-48cm4.s.photon-1,表明目标化合物具有良好的三阶非线性光学性质。

A novel substituent styryl pyridinium tetraphenylborate,4-N,N-dimethylamino-4′-N′-9-methano-anthracene-stilbazolium tetraphenylborate,was synthesized and characterized by means of IR,1H NMR,13C NMR,MS-EI and X-ray single-crystal diffraction.The compound crystallized in the monoclinic space group P21/c with a=1.255 7（1） nm,b=1.539（1） nm,c=2.220 2（8） nm,β=101.099（1） °,and V=4.210 5（4） nm3,Z=4,Dc=1.159 g/cm3.The nonlinear optical properties of the compound were investigated by virtue of 1 064 nm nanosecond laser beam,and the results show that the novel pyridinium salt has a two photon absorption（TPA） coefficient of β=0.028 cm/GW,a TPA cross-section of σ=8.68×10-48 cm4·s·photon-1.