bullet Sensors & Transducers Journal

    (ISSN 1726- 5479)



Editorial Calendar 2007

Editorial Calendar 2006

Submit an Article

Editorial Board

Journal's cover

25 Top Downloaded Articles

2000-2002 S&T e-Digest Contents

2003 S&T e-Digest Contents

2004 S&T e-Digest Contents

2005 S&T e-Digest Contents




Vol. 73, Issue 11, November 2006, pp. 799-803




Preparation of Multiwalled Carbon Nanotube-Poly (4-Styrenesulfonic Acid) Aqueous Dispersion

for Dopamine Sensing


Aihua LIU* a and Jin WANG b

aDepartment of Chemistry , Michigan State University, East Lansing, MI 48824-1322, USA

bNano-Medical Engineering Laboratory, Riken Institute,

2-1 Hirosawa, Wako, Saitama 351-0198, Japan,

Tel.: ++81-29-5080, e-mail: liuaihua@hotmail.com


Received: 21 May 2006   /Accepted: 30 November 2006   /Published: 4 December 2006



Abstract: A simple and facile method for the non-covalent functionalization of multi-walled carbon nanotubes (MWNTs) using poly(4-styrenesulfonic acid) (PSS) is proposed. The resulting PSS-MWNTs dispersion is readily soluble in water and can be left to stand for 2 weeks at room temperature, no phase separation with aggregation of nanotubes at the bottom of the vials was observed. The as-prepared PSS-MWNTs dispersions could facilitate the processing of the nanotubes into composites with high nanotube loading. The PSS-MWNTs complex shows high electrocatalytic activity to the oxidation of neutrontransmitter of dopamine, suggesting that the coating of PSS onto carbon nanotubes surface without destroying the electronic structures of the pristine carbon nanotubes; therefore, the unique properties including the catalytic property of the nanotubes retained. It is envisioned that the PSS-MWNTs aqueous dispersions may find possible applications in the development of biosensors, bioelectronics, separation and environment protection as well as other biological events where water-based environment is required.


Keywords: Dispersion of multi-walled carbon nanotubes, Poly(4-styrenesulfonic acid), Dopamine, Biosensing


Acrobat reader logo Click <here> or title of paper to download the full pages article (248 K)





1999 - 2006 Copyright , International Frequency Sensor Association (IFSA). All Rights Reserved.

Home - News - Links - Archives - Tools - Standardization - Patents - Marketplace - Projects - Wish List - Subscribe - Search - e-Shop - Membership

 Members Area -Sensors Portal -Training Courses - S&T Digest - For advertisers - Bookstore - Forums - Polls - Sensor Jobs - Site Map