由于C_(60)分子具有中心对称性,故其二阶非线性光学系数β=0,但通过在碳笼和胺类分子之间形成分子间电荷转移复合物,则中心对称性被打破,二阶非线性光学性质即诱导产生.另一方面,科学工作者正在进行各种努力去设计和合成许多给体-共轭体系-受体分子,使其分子内电荷转移达到最大,从而使非线性光学系数达到最大.获得大的非线性光学 Because of the central symmetry of the C 60 molecule, the second-order nonlinear optical coefficient β = 0, but the center symmetry is broken by forming an intermolecular charge-transfer complex between the carbon cage and amine molecules. Nonlinear optical properties are induced, on the other hand, scientists are making various efforts to design and synthesize many donor-conjugated system-acceptor molecules to maximize their intramolecular charge transfer, Maximum optical coefficient. Obtain large nonlinear optics