Cleaned glass slides were dipped into the colloidal sol solution prepared by sol-gel method,and then covered with TiO2 nano-membrane.The slides coated with nanostructure thin film were silanized later.The samples were characterized by Fourier transform infrared spectrometer(FTIR),Scanning Electron microscope(SEM) and Fluorescence microscope.Results showed that "Linkers" which comprise amidogen and aldehyde groups can be immobilized on the improved sur...