期刊论文

Huang Shan-Sheng

中文

分析化学

0253-3820

2015

43

11

1695-1700

10.11895/j.issn.0253-3820.150595

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21275100]

本校为第一且通讯机构

以Al_2 O_3纳米通道膜为基体制备金纳米通道,以场发射扫描电镜、循环伏安、交流阻抗等方法对金纳米通道进行表征。采用EDC-NHS的交联反应,将壳聚糖自组装至金纳米通道孔壁上,形成表面具有手性位点选择性的功能化纳米通道膜,利用纳米通道优异的分离能力手性分离D-,L-组氨酸。考察了纳米通道孔径和溶液的pH值对分离效果的影响。采用银溶胶作为表面增强拉曼(SERS)测试的基底,增强对D-,L-组氨酸的SERS效应,提高检测该物质的选择性和灵敏度。分别在1000和1590 cm~(-1)处测定L-组氨酸和D-组氨酸。在含200 μL组氨酸、100 μL银溶胶和100 μL 80 mmol/ L NaCl溶液(pH=7.59)中,D-组氨酸和L-组氨酸可得到...

Gold nanochannels were prepared using Al2 O3 nanotubules membrane as the carrier and modified with chitosan by a classical N-(3-dimethylaminopropyl)-N-ethyl carbodiimide ( EDC)/N-hydroxysuccinimide ( NHS ) coupling reaction. The nanochannels were characterized by field emission scanning electron microscopy ( FESEM) , cyclic voltammetry and AC impedance method. The Au nanochannels modified with chitosan showed a chiral environment and can be used to separate histidine enantiomer. The effects of pore size and solution pH on the separation efficie...