Structure and properties of polyaniline interacting with H-phosphonates

0477339 - ÚMCH 2018 RIV CH eng J - Journal Article
Bláha, Michal - Trchová, Miroslava - Bober, Patrycja - Morávková, Zuzana - Zujovic, Z. D. - Filippov, Sergey K. - Prokeš, J. - Pilař, Jan - Stejskal, Jaroslav
Structure and properties of polyaniline interacting with H-phosphonates.
Synthetic Metals. Roč. 232, October (2017), s. 79-86. ISSN 0379-6779. E-ISSN 0379-6779
R&D Projects: GA ČR(CZ) GA17-04109S
Institutional support: RVO:61389013
Keywords : conducting polymers * polyaniline * H-phosphonate
OECD category: Polymer science
Impact factor: 2.526, year: 2017

Polyaniline (PANI) is conducting when doped, typically with an acid. However, acids are not the only species able to dope PANI. In this study, we show that non-conducting PANI base powder interacts with dimethyl H-phosphonate (DMPH), diethyl H-phosphonate (DEPH), dibutyl H-phosphonate (DBPH) and diphenyl H-phosphonate (DPPH) and yields conducting adducts. The highest conductivity 0.23 S cm-1 is observed for DPPH. The samples were analyzed by FTIR, Raman, NMR, and EPR spectroscopies. We have shown that the doping of PANI with H-phosphonates is only partial and at least part of DEPH and DPPH molecules preserves the H-phosphonate structure, in contrast with DMPH and DBPH. We have also correlated the information on polaron delocalization and mobility obtained from Raman and EPR spectra – polarons in the PANI adduct with DEPH and DPPH have higher mobility. This paper represents a comparative study of a class of PANI-based materials and shows a connection between chain conformation of PANI and materials properties.
Permanent Link: http://hdl.handle.net/11104/0275221