This paper demonstrates a chemical surface modification method for covalent attachment of various polymers by using silane-based “click” chemistry on silica surfaces and within glass microchannels suitable for CE systems. Modified surfaces are characterized by contact angle measurements, X-ray photoelectron spectroscopy, and Fourier transform infrared-attenuated total reflection spectroscopy. Electroosmotic flow (EOF) measurements in modified and unmodified channels are provided. Spectroscopic and transport data show that various polymers can be covalently attached to glass surfaces with a measurable change in EOF.
本文展示了一种
化学表面改性方法,通过在
二氧化硅表面和适用于 CE 系统的
玻璃微通道内使用
硅烷基 "点击 "
化学共价连接各种聚合物。通过接触角测量、X 射线光电子能谱和傅立叶变换红外全反射能谱对改性表面进行了表征。还提供了改性和未改性通道中的电渗流(
EOF)测量结果。光谱和传输数据表明,各种聚合物可以共价方式附着在
玻璃表面上,并在
EOF 方面产生可测量的变化。