Details

Autor(en) / Beteiligte

• Mishra, Abhishek Kumar
• Tandon, Poonam
• Gupta, V.D

Titel

Vibrational Dynamics of Polyaniline Pernigraniline Base Form: A Conducting Polymer

Ist Teil von

• Macromolecular symposia, 2008-05, Vol.265 (1), p.111-123

Ort / Verlag

Weinheim: Wiley-VCH Verlag

Erscheinungsjahr

2008

Quelle

Wiley Online Library

Beschreibungen/Notizen

• Polyaniline is unique among conducting polymers in that its electrical properties can be reversibly controlled both by the oxidation state of the main chain and by protonation. In the present communication we report normal modes and their dispersion in polyaniline pernigraniline base (PANI PNB) form using Urey - Bradely force field which in addition to valence force field accounts for the non-bonded interactions in the gem and cis configurations and tension terms. Some of the distinguished features of the dispersion curves such as cross-over and Von Hove type of singularities are discussed and possible explanations are given in terms of symmetry considerations. Several new assignments, which are missing in earlier work, are reported.