No abstract

No abstract

In this work, novel organic-inorganic hybrid nanocomposites M + /PO 3 − (M = 2,2′-dibenzimidazolyl butane) were prepared by soft chemistry method. The synthesis was done by ion exchange method between sodium metaphosphate anions (yNaPO 3 ) and 2,2′-dibenzimidazolyl butane dichlorhydrates cations (xMCl 2 ) in aqueous media. The MCl 2 organic salt and the M + /PO 3 − hybrid nanocomposites were characterized by using spectroscopic and microscopic analyses. The FTIR and Raman spectroscopy are showed new bands in the hybrid nanocomposites structure, which proved the interactions between PO 3 and NH of MCl 2 molecules. The UV-Vis results of MCl 2 and M + /PO 3 − materials showed a broad absorption band in 200-300 nm regions, originating from phosphate and benzimidazole molecules. The X-ray diffraction was showed the appearance of new peaks attributed to the phosphate (PO 3 ) and a reduction of the intensity of the benzimidazole peaks. The TEM images are showed changes in appearance and size of hybrid materials. Moreover, the surface of hybrids became less dark and the size of M + /PO 3 − nanocomposites diameter was < 50 nm. The EDX analysis results revealed the presence of carbon, oxygen, and phosphate, confirming the interactions between phosphate and MCl 2 organic salt.

We have synthesized by the hydrophobic effect a new hybrid polymer material (HP) composed of segments of different solubility: polystyrene (hydrophobic) and sodium metaphosphate (hydrophilic). The structure and thermal stability of these hybrid materials were investigated and compared to the starting materials using X-ray diffraction (XRD), 31P Nuclear Magnetic Resonance, Raman spectroscopy and thermogravimetric analysis (TGA).The structure of the hybrid material consists of a mixture of phosphate compounds resulting from the hydrolysis of NaPO3. The phosphate groups have probably formed hydrogen bonds with aromatic CH. Furthermore, the delocalization of the electrons in the aromatic group generates negative poles that can interact with the positively charged Na ion, forming a cation-Ï€ interaction.The thermal characterization of these hybrids shows a clear improvement of the thermal property. TGA results show that phosphates increase HP residues yields at 600°C. Thus, Raman spectroscopy results provide evidence for the formation of residues having an aromatic phosphocarbon and an aromatic graphitic structure.