Journal
LANGMUIR
Volume 29, Issue 25, Pages 7768-7775Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la4006949
Keywords
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Funding
- Rutgers Research Council
- [NSF-CHE-1213669]
- Direct For Mathematical & Physical Scien [1039828] Funding Source: National Science Foundation
- Directorate For Engineering [1264488] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1264508] Funding Source: National Science Foundation
- Division Of Chemistry [1039828] Funding Source: National Science Foundation
- Div Of Chem, Bioeng, Env, & Transp Sys [1264488] Funding Source: National Science Foundation
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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 fluorescein isothiocyanate (streptavidin-FITC). The functionalized ZnO films were characterized by Fourier transform infrared attenuated total reflectance (FTIR-ATR), steady-state fluorescence emission, fluorescence microscopy, and field emission scanning electron microscopy (FESEM).
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