Please use this identifier to cite or link to this item:
Title: Self-assembly of bilayer lipid membrane at multiwalled carbon nanotubes towards the development of photo-switched functional device
Authors: Ye, J.-S. 
Cui, H.-F. 
Wen, Y.
Zhang, W.D.
Ottova, A.
Tien, H.T.
Xu, G.Q. 
Sheu, F.-S. 
Keywords: Bilayer lipid membrane
C 60
Carbon nanotubes
Electron mediator
Issue Date: Jan-2005
Citation: Ye, J.-S., Cui, H.-F., Wen, Y., Zhang, W.D., Ottova, A., Tien, H.T., Xu, G.Q., Sheu, F.-S. (2005-01). Self-assembly of bilayer lipid membrane at multiwalled carbon nanotubes towards the development of photo-switched functional device. Electrochemistry Communications 7 (1) : 81-86. ScholarBank@NUS Repository.
Abstract: Bilayer lipid membrane (BLM) was self-assembled on a uniquely fabricated hydrophilic surface, containing N atoms from the carbon source of ethylene amine, of the multi-walled carbon nanotubes (MWNTs) to form the BLM/MWNTs nanocomposites. Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and photoelectric experiments were taken to study the properties of the BLM/MWNTs nanocomposites. The thickness of the BLM, which was calculated from the CV data obtained at BLM/MWNTs electrode, turned out to be 4.38 nm, suggesting that the lipid self-assembled at the nanotubes surface was consistent with a bilayer structure. C 60-incorporated BLM could also be self-assembled at the nanotubes surface (C 60-BLM/MWNTs). The formation of BLM on the MWNTs surface blocked the diffusion of [Fe(CN) 6] 3/4- redox ions across BLM to the MWNTs electrode as no redox current was observed by CV measurement, whereas the incorporation of the electron mediator, C 60, resumed a pair of redox peaks at C 60-BLMs/MWNTs electrode. Moreover, the incorporation of C 60 led to a four order of magnitude reduction of the resistance of C 60-BLM/MWNTs (369.3 Ω) than that of BLM/MWNTs (3.238 × 10 6 Ω). MWNTs electrode exhibited an intrinsic cathodic photocurrent (166 μA cm -2) while BLM/MWNTs electrode blocked photocurrent response of the MWNTs. Interestingly, C 60-BLM/MWNTs electrode resumed partial photoelectric properties (photo current: 65 μA cm -2) due to the electron mediation effect of C 60 incorporated into the lipid membrane. As a result, the novel self-assembled BLM/MWNTs nanocomposites provided a simple yet useful model to study the C 60-mediated photoelectric properties of the BLM/MWNTs which may be applicable to develop new biosensors and molecular devices. © 2004 Published by Elsevier B.V.
Source Title: Electrochemistry Communications
ISSN: 13882481
DOI: 10.1016/j.elecom.2004.11.013
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Sep 15, 2019


checked on Sep 6, 2019

Page view(s)

checked on Sep 7, 2019

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.