一类新型2CTσ化合物的双光子吸收性质  

TWO-PHOTON PROPERTIES OF A NEW SERIES OF 2CTσ CHROMOPORES

作　　者：周玉芳[1] 孟凡青[2] 赵显[2] 许东[2] 蒋民华[2] 

机构地区：[1]山东大学物理系,山东济南250100 [2]山东大学晶体材料国家重点实验室,山东济南250100

出　　处：《山东大学学报（理学版）》2002年第1期61-64,共4页Journal of Shandong University(Natural Science)

基　　金：国家重点基础研究规划项目 (G19980 6 14 0 2 )

摘　　要：设计并合成了一类新型双电荷转移结构 (简称 2CTσ)的有机化合物 ,实验显示此类化合物在6 0 0～ 130 0nm范围内无明显吸收 ,可望在此波段内产生双光子行为 .对该组化合物的双光子吸收截面进行了理论计算 ,结果显示双光子吸收峰值波长在 96 0～ 970nm范围内 ,而吸收截面达 10 - 48cm4 s数量级 ,具备了双光子器件要求强吸收的条件 .It was designed and synthesized that a new series of two-photon ASPT-like charge transfer moieties linked by σ -bond spacers to N-position of pyridine cycle.Both theoretical and experimental results show there is no linear absorption in 600～1300nm.and two-photon properties can be expected in this range.TPA cross sections were calculated and the results show those compounds possess large cross section as well as appropriate absorption wavelengths.So they are good candidates for making two-photon devices.

关 键 词：2CTσ化合物 双光子吸收性质 吸收截面 非线性光学材料 双电荷转移结构 光子跃迁 有机化合物 

分 类 号：O621.22[理学—有机化学]