单体尺度及配比对共聚物电子结构及光吸收性质的影响

EFFECT OF THE LENGTHS AND RATIOS OF HOMOPOLYMERS ON THE ELECTRONIC STRUCTURE AND ABSORPTION OF COPOLYMERS

在紧束缚近似下 ,建立了二嵌段共聚物 (A) x (B) y 的物理模型 ,研究了组成共聚物的均聚物单体对体系的电子结构及光学吸收性质等的影响 ,发现均聚物的尺度及配比对共聚物的电子结构及光吸收谱具有显著的调制作用 ,从而达到使共聚物发出不同颜色光的目的 .

The electronic and absorption properties of (PPP) x (PA) x diblock copolymers,have been studied by using a tight binding calculation.It was found that the electronic and absorption properties of the neutral states of these diblock copolymers are sensitive to the constitutions of PPP and PA monomers and ratios of PPP and PA.It is verified that the copolymers that emitting in all visible light should be obtained.