摘要
通过非共价反应将精氨酸包覆于多壁碳纳米管上,并用荧光分光光度计和原子力显微镜检测其在不同pH值条件下的分散性和凝聚性.结果表明:改性后的碳纳米管的分散性具有pH敏感性,pH值越大,分散性越好,且灵敏度高.同时对其pH敏感性的机理进行了分析与讨论.这将对碳纳米管在药物载送、生物传感等方面的应用有重要的意义.
The multi-walled carbon nanotubes （MWNT） were wrapped with arginines in noncovalent interactions and their dispersion and aggregation at different pH was detected using a fluorophotometer and an atomic force microscope. The result shows that the MWNT modified by arginines owns sensitive pH-response dispersions and the higher the pH, the better the dispersion. The mechanism of pH-response was also analyzed and discussed intensively. This will be of great significance for MWNT to be used as drug delivery and sensors in the future.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2009年第1期83-87,共5页
Acta Chimica Sinica
基金
国家自然科学基金(No.50772133)
中南大学博士研究生创新基金(No.134376211)资助项目
关键词
多壁碳纳米管
精氨酸
非共价修饰
PH敏感性
MWNT （multi-walled carbon nanotube）
arginine
noncovalent interaction
pH-response
