화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2020년 가을 (10/14 ~ 10/16, e-컨퍼런스)
권호 26권 1호, p.358
발표분야 생물화공
제목 Ultra high sensitive electrochemical impedimetric myoglobin sensor with octadecylamine modified graphene oxide electrodes
초록 Numerous structuring strategies to enlarge surface area of electrode have been studied to improve sensitivity of electrochemical impedance spectroscopy-based biosensor. However, proposed approaches such as nano-micro patterning are not applicable to graphene-based electrodes due to ultrathin film thickness of electrodes (below than 10 nm). To overcome this limit, in this study, we researched a novel means to increase the electroactive surface area of graphene electrode. The surface area of electrode, where graphene nanosheets modified with octadecylamin (ODA) groups that can alter the inter-sheet spacing are assembled, increases through thermal reduction. To demonstrate presented method, the ODA modified graphene electrodes were assessed via EIS measurements and employed to detect myoglobin (Mb). As a result, the ODA modified graphene electrode exhibited detection limit of 2.37 pM concentration of Mb, which is outstanding sensing performance compared to normal graphene electrode.
저자 유성수, 유필진
소속 성균관대
키워드 나노바이오
E-Mail pjyoo@skku.edu
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