Plasmonic-based electrochemical impedance spectroscopy: application to molecular binding.
Plasmonic-based electrochemical impedance spectroscopy: application to molecular binding.
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DOI:
10.1021/ac202634h
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发表时间:
2012-01-03
影响因子:
7.4
通讯作者:
Tao, Nongjian
中科院分区:
文献类型:
--
作者:
Lu, Jin;Wang, Wei;Wang, Shaopeng;Shan, Xiaonan;Li, Jinghong;Tao, Nongjian
Plasmonic-based electrochemical impedance spectroscopy (P-EIS) is developed to investigate molecular binding on surfaces. Its basic principle relies on the sensitive dependence of surface plasmon resonance (SPR) signal on surface charge density, which is modulated by applying an AC potential to a SPR chip surface. The AC component of the SPR response gives the electrochemical impedance, and the DC component provides the conventional SPR detection. The plasmonic-based impedance measured over a range of frequency is in quantitative agreement with the conventional electrochemical impedance. Compared to the conventional SPR detection, P-EIS is sensitive to molecular binding taking place on the chip surface, and less sensitive to bulk refractive index changes or non-specific binding. Moreover, this new approach allows for simultaneous SPR and surface impedance analysis of molecular binding processes.
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影响因子:
6.2
作者:
Balkenhohl, T.;Lisdat, F.
通讯作者:
Lisdat, F.
DOI:
10.1016/0928-4931(95)00082-8
发表时间:
1995-12-01
期刊:
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS
影响因子:
--
作者:
Ahluwalia, A;Giusto, G;DeRossi, D
通讯作者:
DeRossi, D
影响因子:
7.4
作者:
Nelson, BP;Grimsrud, TE;Corn, RM
通讯作者:
Corn, RM
影响因子:
7.4
作者:
Foley, Kyle J.;Shan, Xiaonan;Tao, N. J.
通讯作者:
Tao, N. J.
影响因子:
7.4
作者:
Bogomolova, A.;Komarova, E.;Aldissi, M.
通讯作者:
Aldissi, M.