Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
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Functionalization of Au surfaces with 4-(carboxymethyl)aniline and amine-terminated dendrimers for enhanced surface density of antibodies on immunosensor Au chips

  • Lee, Yongwoon (Department of Chemistry, Research Institute for Basic Sciences, Kyung Hee University) ;
  • Ju, Youngwon (Department of Chemistry, Research Institute for Basic Sciences, Kyung Hee University) ;
  • Kim, Joohoon (Department of Chemistry, Research Institute for Basic Sciences, Kyung Hee University)
  • Received : 2017.01.31
  • Accepted : 2017.02.09
  • Published : 2017.02.25
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Abstract

Here, we demonstrate surface functionalization of Au chips with 4-(carboxymethyl)aniline (CMA) and amine-terminated polyamidoamine (PAMAM) dendrimers for immobilization of antibodies on the Au surfaces. Use of the functionalization strategy led to high surface density of the immobilized antibodies on the Au chips. Specifically, we found that the functionalization of Au chips with CMA and amine-terminated $6^{th}$ generation PAMAM dendrimers allowed immobilization of immunoglobulin (IgG) antibodies with high surface density, which is 5 times higher than that obtained with Au surfaces functionalized with CMA and ethylenediamine.

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