Functionalization of Nanostructured ZnO Films by Copper-Free Click Reaction

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• 作者：Yan Cao ; Elena Galoppini ; Pavel Ivanoff Reyes ; Yicheng Lu
• 刊名：Langmuir
• 出版年：2013
• 出版时间：June 25, 2013
• 年：2013
• 卷：29
• 期：25
• 页码：7768-7775
• 全文大小：430K
• 年卷期：v.29,no.25(June 25, 2013)
• ISSN：1520-5827

文摘

The copper-free click reaction was explored as a surface functionalization methodology for ZnO nanorod films grown by metal organic chemical vapor deposition (MOCVD). 11-Azidodecanoic acid was bound to ZnO nanorod films through the carboxylic acid moiety, leaving the azide group available for Cu-free click reaction with alkynes. The azide-functionalized layer was reacted with 1-ethynylpyrene, a fluorescent probe, and with alkynated biotin, a small biomolecule. The immobilization of pyrene on the surface was probed by fluorescence spectroscopy, and the immobilization of biotin was confirmed by binding with streptavidin鈥揻luorescein isothiocyanate (streptavidin鈥揊ITC). The functionalized ZnO films were characterized by Fourier transform infrared attenuated total reflectance (FTIR鈥揂TR), steady-state fluorescence emission, fluorescence microscopy, and field emission scanning electron microscopy (FESEM).