Synthesis and characterization of hybrid materials with polythiophenes derivatives for sensor applications

• Grant number: 09/16413-7
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: May 01, 2010
• End date: February 28, 2013
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Celso Valentim Santilli
• Grantee: Vanessa Cristina Gonçalves
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
• Associated research grant: 07/53073-4 - Mesoporous ceramics and multifunctional organic-inorganic hybrids prepared by sol-gel process, AP.TEM

Abstract

In the last decades, the general concerns about the increasing of toxic gases emission levels induced a growing number of researches in new materials, devices and technologies to produce sensors to control the emissions. Metallic oxides and conjugated polymer sensors have shown promising results in these applications, which will make possible construction of portable and more efficient detection systems. However, there are some significant disadvantages of these materials, such as lack of selectivity and sensitivity. In this context, we propose the synthesis of hybrid materials with polythiophenes derivatives, aiming to improve the gas sensors properties. Chemical-structural and morphological characterizations of these materials will be performed. Optical and electrical characteristics of their thin films obtained from sol-gel process will be study in the presence of different gases. (AU)