离子注入生物分子的电荷交换效应  

Charge exchange effect of ion implantation to biomolecules

作　　者：邵春林[1] 许安[1] 余增亮[1] 

机构地区：[1]中国科学院等离子体物理研究所

出　　处：《核技术》1997年第2期70-73,共4页Nuclear Techniques

基　　金：国家自然科学基金

摘　　要：以酪氨酸（Ｔｙｒ）分子晶体和腺嘌呤核苷（ＡＲ）分子晶体为对象，用毛细管电泳法研究荷能离子注入对其表面电荷的影响。实验发现，分子的泳动情况与注入离子的剂量有关。当３０ｋｅＶＮ＋以１５×１０１９ｉｏｎｓ／ｍ２剂量注入后，Ｔｙｒ和ＡＲ分子晶体的电泳图象出现三种情况向正极运动；静止悬浮；向负极泳动，这说明注入Ｎ＋与靶分子之间发生了电荷交换作用，并对电荷交换量进行了估算。The N + implantation-induced influence upon the surface charges of tyrosine and adenosine molecule crystals was studied with the method of capillary electrophoresis. The swimming directions of the implanted molecule crystals were found to be related to dose of the implanted ions. Irradiated by 30keV N + with a dose of 15×10 19 /m 2, the tyrosine or adenosine crystals had three swimming models: to cathode, to anode, and motionless. This means that the charge exchange effect between N + and the target molecules exists and the transferred charge amount has been estimated.

关 键 词：离子注入 生物分子 电荷交换 

分 类 号：Q691.5[生物学—生物物理学]