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Enhancement of processability, stability and photoluminescence performance of poly(p-phenylene vinylene) containing diazine heterocycle unit

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Abstract

Two n-type conjugated polymers of pyrazine and quinoxaline containing poly(p-phenylene vinylene) (P-1) (P-2) have been synthesized through Wittig route. Formation of the polymers were confirmed by spectral (UV-Vis, PL, FT-IR and NMR), elemental and GPC analysis. These polymers were soluble in common organic solvents such as THF, CH2Cl2, CHCl3 and CH3CN. The resulting polymers have good thermal stability upto 308 and 361 °C with the 5 % weight loss. The absorption spectrum of the polymers displayed the maximum at 398 and 414 nm, corresponding to the π-π* electronic transition of the conjugated polymer backbones. The optical band gap of these polymers found to have in the range of 2.5–2.53 eV. The photoluminescence spectrum of the polymers was observed at 487 and 505 nm in CHCl3 solution. AFM images depicted that the micrometer sized globular and triangular shaped particles can be seen from the polymer surfaces.

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Authors and Affiliations

  1. Organic Chemistry Division, School of Advanced Science, VIT University, Vellore-14, Tamil Nadu, India

    S. Karpagam & P. Sakthivel

  2. Department of Chemistry, Muthurangam Government Arts College, Vellore, Tamil Nadu, India

    S. Guhanathan

Authors
  1. S. Karpagam
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  2. S. Guhanathan
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  3. P. Sakthivel
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Correspondence to S. Karpagam.

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Karpagam, S., Guhanathan, S. & Sakthivel, P. Enhancement of processability, stability and photoluminescence performance of poly(p-phenylene vinylene) containing diazine heterocycle unit. Fibers Polym 13, 1105–1112 (2012). https://doi.org/10.1007/s12221-012-1105-9

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  • DOI: https://doi.org/10.1007/s12221-012-1105-9

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