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Baibarac, M., Baltog, I. & Lefrant, S. (2009) Photoluminescence and Raman spectroscopy studies on polyaniline/PbI2 composite. J. Solid State Chem. 182 827–835.
Added by: Laurent Cournède (2016-03-10 21:41:24) |
| Type de référence: Article DOI: 10.1016/j.jssc.2009.01.007 Numéro d'identification (ISBN etc.): 0022-4596 Clé BibTeX: Baibarac2009c Voir tous les détails bibliographiques  |
Catégories: PMN Mots-clés: anilines, Charge collector, conducting polymers, hybrid, Hybrid materials, intercalation, Lead iodide, metal, optical-properties, pbi2, pyridine, semiconductors, spectra Créateurs: Baibarac, Baltog, Lefrant Collection: J. Solid State Chem. |
Consultations : 1/923
Indice de consultation : 6% Indice de popularité : 1.5% |
| Résumé |
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Functionalization of PbI2 with conjugated polymers (polyaniline-emeraldine base (PANI-EB) or polyaniline-emeraldine salt (PANI-ES)) is demonstrated by Raman and luminescence studies. PbI2/PANI hybrid material was prepared by electrochemical polymerization of aniline onto the PbI2 modified Pt electrode and mechanico-chemical reaction between the two constituents. PANI interacting with the PbI2 gives rise to new Raman bands at 80,144 and 170 cm(-1). First line reveals the formation of "stacking faults" that disrupt the I-Pb-I layers stacking along the c axis by the insertion of polymer molecules. The bands at 144 and 170 cm(-1) are attributed to the vibrational mode associated with Pb-NHR ''(2) (R '' = C6H4) bond. The functionalization of PbI2 with PANI-EB brings forth the PANI-ES form. Depending on the semiconducting (PANI-EB) or conducting (PANI-ES) properties of the polymer in the PbI2/PANI intercalated material, a partial or total collection of the charges generated under band to band irradiation is revealed by photoluminescence studies. (C) 2009 Elsevier Inc. All rights reserved.
Added by: Laurent Cournède |