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

• Authors: Anca Grigoras , Virgil Barboiu
• Languages of publication: EN

Abstracts

EN

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. [...]

Keywords

EN

PVK mixtures; Electron acceptor functionality; GPC; 1H-NMR; FTIR

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2012
• Volume: 10
• Issue: 2
• Pages: 313-319

Dates

published

1 - 4 - 2012

online

29 - 1 - 2012

Contributors

author

Anca Grigoras

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

author

Virgil Barboiu

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

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Identifiers

DOI

10.2478/s11532-011-0144-1