手征性分子中固有的手征性场  

Intrinsic Chiral Fields of Chiral Molecules

作　　者：徐伟[1] 

机构地区：[1]复旦大学材料科学系,上海200433

出　　处：《复旦学报（自然科学版）》2007年第2期262-264,共3页Journal of Fudan University：Natural Science

基　　金：国家自然科学基金资助项目(60171008)

摘　　要：手征性只是一个与几何特征有关的概念,是一种赝标量.这种赝标量无法保证与外部物理世界的联系.研究分析发现,分子不仅仅是原子位置在空间的排列,分子通常还具有固有的电偶极子排布.简单的几何图形不足以描述分子的物理特征.手征性分子不仅拥有原子位置的不对称排列,还拥有固有电偶极子的不对称排布.手征性分子的固有手征性场其尺寸要大于分子通常的几何尺寸,这种固有的手征性场可以定义为一种物理状态,能保证分子与外部物理世界的联系.一对对映体是关于手征性场的双态体系.逻辑上,手征性的场分布才是导致手征性分子旋光活性的物理原因,因为场是一种物理实在并且拥有固有的方向性.Chirality is soldy a concept with respect to geometry, it is a pseudo-scalar without any connection to the physical world. On the basis of my analysis, molecules not only have a spatial arrangement of atoms but also possess a spatial arrangement of electric dipoles. Therefore, any simple gecometric figure is insufficient to describe the physical properties of molecules. Chiral arrangement of intrinsic dipoles is specified in chiral molecules. The chiral dipolar field, larger than the molecule itself, can be defined as a physical state that may guarantee the oonnection to the physical world. A pair of enanticomers actually is a two-state system with respect to chiral fields. Logically, the intrinsic chiral fields rather than the chiral gecometry are responsible for optical rotations of enantiomers in ground state, since fields are physical reality and they possess intrinsic directions.

关 键 词：手征性 手征性分子 固有电偶极 手征性场 物理状态 分子物理 

分 类 号：O561.1[理学—原子与分子物理] O412.3[理学—物理]