Effect of a polymeric protective coating on optical and electrical properties of poly(p-phenylene vinylene) derivatives

Made available in DSpace on 2014-12-03T13:08:44Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-01-01Bitstream added on 2014-12-03T13:23:39Z : No. of bitstreams: 1 WOS000327306600001.pdf: 1622804 bytes, checksum: bd55a27e156798bd3c5a0bcd0112bd8a (MD5) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Instituto Nacional de Eletronica Organica, Brazil The resistance to photodegradation of poly[(2-methoxy-5-n-hexyloxy)-p-phenylene vinylene] (OC1OC6-PPV) films was significantly enhanced by the use of poly(vinyl alcohol) 99% hydrolyzed as protective coating. The deposition of poly(vinyl alcohol) onto OC1OC6-PPV films did not affect the absorption and the emission spectra of the luminescent polymer. The protected film showed 5% drop on the absorbance at 500 nm after 270 hours of light exposure while the unprotected film completely degraded in the same conditions. The conductivity of the protected film remained stable (around 7 x 10(-10) S/m) while the value for the unprotected one dropped around two orders of magnitude after 100 hours of light exposure. Univ Sao Paulo, IFSC, BR-13566590 Sao Carlos, SP, Brazil Unesp Presidente Prudente, FCT, BR-19060900 Presidente Prudente, SP, Brazil Univ Sao Paulo, EESC, Dept Engn Mat, BR-13566590 Sao Carlos, SP, Brazil Unesp Presidente Prudente, FCT, BR-19060900 Presidente Prudente, SP, Brazil