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Influence of acceptor functionality on charge transfer interactions in mixtures of poly(9-vinylcarbazole) with nitroaromatic compounds

  • Research Article
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Central European Journal of Chemistry

Abstract

Charge transfer interactions in mixtures of poly(9-vinylcarbazole) with three nitro compounds (4,4′dinitrodibenzyl, ethyl 3,5-dinitrobenzoate and 2,2′,4,4′-tetranitrodibenzyl) were examined.

GPC shows an increase of apparent polymer weight average molecular weight (MW) in mixtures compared with pure PVK. Electron acceptors show upfield 1H-NMR shifts for all mixtures. The equilibrium association constants (k) calculated from the Benesi-Hildebrand equation are 0.511, 1.371, and 1.868 L mol−1 for PVK blends with DNDB, DNBE and TNDB, respectively. Shifts of (−NO2) stretch vibrations in mixtures support charge transfer complex formation between PVK chains and electron acceptors

The ability to accept electrons decreases: TNDB>DNBE>DNDB.

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Authors and Affiliations

  1. “Petru Poni” Institute of Macromolecular Chemistry, 700487, Iasi, Romania

    Anca G. Grigoras & Virgil Barboiu

Authors
  1. Anca G. Grigoras
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  2. Virgil Barboiu
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Correspondence to Anca G. Grigoras.

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Grigoras, A.G., Barboiu, V. Influence of acceptor functionality on charge transfer interactions in mixtures of poly(9-vinylcarbazole) with nitroaromatic compounds. cent.eur.j.chem. 10, 313–319 (2012). https://doi.org/10.2478/s11532-011-0144-1

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