New copper (II) complexes of polyampholyte and polyelectrolyte polymers: solid-state NMR, FTIR, XRPD and thermal analysis.

JUAN MANUEL LÁZARO MARTÍNEZ; A. KARINA CHATTAH; G.A. MONTI; M.F. LEAL DENIS; G.Y. BULDAIN; V. CAMPODALL'ORTO

POLYMER

Elsevier

Año: 2008 vol. 49 p. 5482 - 5482

0032-3861

ovel solid copper (II) complexes were obtained from the polyampholyte Poly(EGDE-MAA-IM) and the polyelectrolyte Poly(EGDE-MAA) polymers with copper salts at different concentration levels.The materials were characterized employing solid-state Nuclear Magnetic Resonance (NMR), Fourier Transform infra-red (FTIR), X-ray powder diffraction (XRPD), differential scanning calorimetry (DSC) and thermogravimetry (TG).The reticulation induced by the MAA in these materials against the poly(EGDE-IM) gel was analyzed by DSC. The coordination behavior of the carboxylic acid of the MAA, compared to that provided by the imidazole ring, was studied through solid-state 13C NMR and changes in the FTIR spectra. The non-homogenous character of the dopped and undopped materials was analyzed by the glass transition temperature (Tg), 2D 1H-13C WISE NMR and proton spin-lattice relaxation time in the rotating frame (TH1rho). In particular, the TH1rho and TH1 values in the complexes decreased with t