| 110keV铁离子束辐照L(+)–半胱氨酸的分子改性研究 |
| |
| 引用本文： | 袁世斌,卫增泉,李文建,高清祥.110keV铁离子束辐照L(+)–半胱氨酸的分子改性研究[J].中国物理 C,2003,27(5):460-464. |
| |
| 作者姓名： | 袁世斌 卫增泉 李文建 高清祥 |
| |
| 作者单位： | [1]中国科学院近代物理研究所，兰州730000 [2]兰州大学生命科学学院，兰州730000 |
| |
| 基金项目： | 中国科学院九五重点项目基金 (KJ95 2 S1 42 4)，中国科学院知识创新基金 (CX0 10 0 0 7)资助~~ |
| |
| 摘 要： | 用110keVFe离子注入L(+)-半胱氨酸薄膜样品,然后通过傅里叶变换红外光谱、紫外-可见光谱和核磁共振氢谱分析表明,L(+)-半胱氨酸在接受Fe离子束辐照后受到了严重损伤,在样品中产生了新的分子基团.ESR波谱分析表明在辐照产物中存在一种长寿命自由基.ESI质谱分析进一步支持了低能离子束辐照所致生物分子改性的发生.
|
| 关 键 词： | 低能离子注入 L(+)–半胱氨酸 辐照效应 分子改性 质量沉积 |
| 收稿时间： | 2002-5-29 |
Research on Molecular Modification of L(+)-Cysteine Induced by 110 keV Fe+ Ion Beam Irradiation |
| |
| YUAN Shi,Bin,\ WEI Zeng,Quan,\ LI Wen,Jian,\ GAO Qing,Xiang.Research on Molecular Modification of L(+)-Cysteine Induced by 110 keV Fe+ Ion Beam Irradiation[J].High Energy Physics and Nuclear Physics,2003,27(5):460-464. |
| |
| Authors: | YUAN Shi Bin \ WEI Zeng Quan \ LI Wen Jian \ GAO Qing Xiang |
| |
| Affiliation: | YUAN Shi Bin 1\ WEI Zeng Quan 1\ LI Wen Jian 1\ GAO Qing Xiang 2 1 |
| |
| Abstract: | Fe + ions with the energy of 110 keV were implanted into films of L(+) cysteine. FTIR, UV VIS spectrometry and 1H NMR analysis of the irradiated samples prove that some of the original bio molecules were seriously damaged and significant modifications were induced. ESR analysis shows that a kind of long life radical was formed in the irradiated samples. The results of ESI FTMS analysis further supports the molecular modification induced by low energy ion beam irradiation. The radiation effects are closely connected with the energy deposition in solid L(+) cysteine samples. |
| |
| Keywords: | low energy ion implantation L(+) cysteine radiation effect molecular modification |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《中国物理 C》浏览原始摘要信息 |
|
点击此处可从《中国物理 C》下载全文 |
