화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.8, No.1, 46-49, January, 2002
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Photophysical Properties of Poly(octanedioxy-co-dmPPV) Copolymer
Sang-Bum Park, Jung Sun Suh, Kyu-Wang Lee†, In Haeng Cho1, and Young-Dong Park2
  • Department of Chemistry, Myongji University, Kyonggi 449-728, Korea
  • 1Natural Science Research Institute, Myongji University, Kyonggi 449-728, Korea
  • 2Department of Chemistry, Ajou University, Kyonggi 442-749, Korea
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The concentration, solvent, and temperature-dependent luminescence of a poly(p-phenylenevinylene) copolymer investigated. The concentration was found to affect the emission intensity, and the maximum intensity was observed at a concentration of 1.6 X 10(-3) wt%. The concentration effect resulted from a self-absorption and steric interaction between the polymer chains. The solvent polarity also affected the maximum emission wavelength. The dipole-dipole interaction between the polymer chain and the solvent increased as the solvent polarity increased, resulting in a small blue shift of the emission maximum up to 435 nm. At a low temperature, 14 K, a small red shift by 6 nm was observed compared with that at room temperature, which resulted from an increase in the effective conjugation length due to the rigidity of the polymer chains at a low temperature.
Keywords:poly(p-phenylenevinylene) copolymer;photophysical properties;dipole-dipole interaction;photolumineseence;solvent polarity
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