110keV铁离子束辐照L(+)-半胱氨酸的分子改性研究

来源 :高能物理与核物理 | 被引量 : 0次 | 上传用户：rudy_luo

【摘要】

：

用110keV Fe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

【作者】

：

袁世斌卫增泉李文建高清祥

【机构】

：

中国科学院近代物理研究所,兰州大学生命科学学院

【出处】

：

高能物理与核物理

【发表日期】

：

2004年期

【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

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论文部分内容阅读

用110keV Fe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.

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110keV铁离子束辐照L(+)-半胱氨酸的分子改性研究

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