摘要
在AM1和ZINDO方法基础上,按完全态求和公式编制了计算分子二阶非线性光学系数βijk的程序,并对偶氮系列分子的二阶非线性光学性质进行系统的理论研究,即在的基础上,在苯环左端引入不同的推电子基团,在其右端引入不同的吸电子基团,研究取代基变化时β变化的规律性,并在微观上给予解释。最后设计出非线性光学系数较大的分子。
On the basis of AM1 and INDO/CI methods, we devise the program for the calculation of nonlinear second-order optical susceptibilities βijk and perform systematic theoreticalstudies on the nonlinear optical second-order properties of azobenzene series molecules ,i.e.on the basis of H2N -N=N-NO2,we induced different donors on the left sideof phenyl ring, and different acceptors on the right side of phenyl ring,and examined therule of β variation.The regularity summarized from the calculated results has been explainedmicromechanically.Finally,a molecule having a big nonlinear second-order optical susceptibility has been designed.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第4期596-600,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
吉林大学理论化学计算国家重点实验室资助
吉林大学分子光谱与分子结构开放实验室资助