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.
出处
《核技术》
EI
CAS
CSCD
北大核心
1997年第2期70-73,共4页
Nuclear Techniques
基金
国家自然科学基金
关键词
离子注入
生物分子
电荷交换
Ion implantation, Biomolecules, Charge exchange
