Electro-synthesis of new poly (p-phenylene-vinylene) to study its potential application in opto-electronic devices and electronic noses

Author(s)

Eduardo Kunio Chinone Yoshikawa

• Document type: Doctoral Thesis
• Press: São Paulo.
• Institution: Universidade de São Paulo (USP). Conjunto das Químicas (IQ e FCF) (CQ/DBDCQ)
• Defense date: 2004-08-13

Examining board members

Jonas Gruber; Elisabete Frollini; Liliana Marzorati; Jivaldo do Rosario Matos; Lucimara Stolz Roman

• Advisor: Jonas Gruber

Abstract

In this thesis we describe the electrosynthesis of seven difterent poly(p-phenilenevinylene)s, PPVs, bearing long and short, electron donating and withdrawing side groups. These polymers are aimed for our recent interest in gas sensors based on conducting polymers and their application in electronic noses. Five out of the seven polymers are novel materials, hence never described before. The polymers were characterized spectroscopically. Those with long side chain were also submitted to thermal analyses and size exclusion chromatography. Electrical measurements (I x V) in metal/polymer/metal sandwich devices led to the determination of the charge carrier mobility of one of the polymers. Gas sensors, having thin films of the synthesized polymers as active layers, have shown good selectivity towards several organic solvent vapors and water as well. (AU)