Abstract
To reliably immobilize different biomoieties on surfaces of III-V semiconductors is one of the most critical issues in the development of biodetector devices based on the optical/electronic properties of these materials. Herein we demonstrate the successful immobilization of avidin, a robust and well-studied protein, on a (001) GaAs surface. The immobilization was investigated via specific binding to biotin, which was connected to the GaAs surface through commercially available long- or short-chain amino group terminated alkanethiols (HS(CH2)11NH2 or HS(CH2)2NH2), or through a biotinylated thiol synthesized in our laboratory. The immobilization performance was evaluated by photoluminescence and fluorescence microscopy measurements. We found that the biotinylated thiol mixed with a diluent thiol provides the highest avidin immobilization efficiency.
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81.05.Ea; 82.65.+r; 87.14.Ee
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Ding, X., Moumanis, K., Dubowski, J. et al. Immobilization of avidin on (001) GaAs surface. Appl. Phys. A 83, 357–360 (2006). https://doi.org/10.1007/s00339-006-3569-1
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DOI: https://doi.org/10.1007/s00339-006-3569-1