bullet Sensors & Transducers Journal

    (ISSN 1726- 5479)


2008 e-Impact Factor

25 Top Downloaded Articles

Journal Subscription 2010

Editorial Calendar 2010

Submit an Article

Editorial Board

Current Issue

Sensors & Transducers journal's cover

Sensors & Transducers Journal 2008

Sensors & Transducers Journal 2007

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

2006 S&T e-Digest Contents


Best Articles 2008




Vol. 113, Issue 2, February 2010, pp. 56-62




Optical Behavior by Congo Red Doped in Polymer and Sol-Gel Film


*A. Kazemzadeh, R. Kashanaki and M. R. Hassanzadeh

Materials & Energy Research center

P. O. Box 14155 4777 Tehran Iran

Tel.: +98261-6204131-4, fax: +98261-6201888

E-mail: Asg642001@yahoo.com



Received: 20 October 2009   /Accepted: 19 February 2010   /Published: 26 February 2010


Abstract: A pH Chemical sensor with high sensitivity is achieved by direct attachment of Cong Red indicator over a Sol-Gel and polymeric film. This sensor is prepared by attaching Congo red over polymeric film or by adding indicator in tetra metoxysilan (TMOS) in order to determining hydrogen ion in solution with high concentration of hydrogen and producing strong signals and rapid response time. Congo red is used over a Sol-Gel or polymeric film as a chemical-optical sensor. Sol-Gel layer and polymeric membrane have long lifetime as (>15 months) and (>12 months) and short response time as (>6 sec) and (>9 sec) respectively. It is a simple method and applied dye has low price and highly used. In this paper, the purpose is investigation and optimizing condition for Sol-Gel layer and polymeric film. Finally morphology of polymeric film and Sol-Gel layer surfaces were investigated by AFM apparatus and subsequently Sol-Gel layer have been found to be a favorite base for chemical sensor a fabrication.


Keywords: Optical, pH, Congo Red, Polymer, Sol-Gel and Sensing Film


Acrobat reader logo Click <here> or title of paper to download the full pages article (775 Kb)





1999 - 2010 Copyright , International Frequency Sensor Association (IFSA). All Rights Reserved.

Home - News - Links - Archives - Tools - Standardization - Patents - Marketplace - Projects - Wish List - Subscribe - Search - Membership - Submit Press Release

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