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학술발표회초록보기

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제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synergistic electrochemical biosensor utilizing supramolecular association of enzyme on sol-gel matrix embedded gold nanoparticles supported reduced graphene oxide-cyclodextrin nanocomposite

등록일
2015년 9월 3일 13시 54분 46초
접수번호
1223
발표코드
ELEC.P-555 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 16일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
전기화학
저자 및
공동저자
Shanmugam Manivannan, 김규원1,*
인천대학교 화학과, India
1인천대학교 화학과, Korea
Herein we present β-cyclodextrin (CD) attached reduced graphene oxide (RGO) nanosheets supported on the silicate sol-gel matrix embedded gold nanoparticles (Au NPs) modified electrode surface as a new affinity binding nanocomposite. Modified electrode is fabricated through the layer-by-layer drop casting followed by the immobilization of the chemically modified enzyme (HRP-ADA). This affinity system is based on the supramolecular association between the CDs and HRP-ADA is mimicking the biological avidin-biotin interactions. The cavity of the CD attached at the RGO surface (RGO-CD) functions as a macro cyclic host to form stable supramolecular inclusion complexes with enzyme conjugate. The silicate sol-gel matrix embedded Au NPs has improved the interfacial interaction with the RGO-CD nanosheets at the electrode surface and thus exhibits the synergistic electrocatalytic effect towards the H2O2 in the presence of 1 mM Hydroquinone when compared to the individual electrocatalytic effects of Au NPs and RGO-CD nanosheets, respectively.

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