Artículo de revista
Role of the linking of metallic centers to macromolecular and oligomeric systems in the pyrolytic products
Fecha
2008-03Registro en:
JOURNAL OF THE CHILEAN CHEMICAL SOCIETY Volume: 53 Issue: 1 Pages: 1373-1376 Published: MAR 2008
0717-9324
Autor
Díaz Valenzuela, Carlos
Valenzuela, M. Luisa
Zúñiga, Luis R.
Institución
Resumen
Pyrolysis of the mixtures: [NP(O2C12H8)] // AuCl(PPh2) system (I) [NP(O2C2H8)(0.8)[NP(OC6H4CH2CN.{Ru})(2)](0.15) NP(OC6H5)1OC(6)H(4)CH(2)CN.[Ru](0.05)](n) // (BuSiMe2Cl)-Bu-1 system (II) and N3P3[NH(CH2)(3)Si(OEt)(3)](6) // N3P3[OC6H4CH2CN. TiCp2Cl](6)(PF6)(6) system (III) were studied in air and at 800 degrees C, and their products characterized. Nanostructured Au foams; RuO2 and Ti(PO3)(3) islands deposited on SiP2O7/P4O7 matrix respectively were obtained. System (I) affords similar results to the pyrolysis of the polyphosphazene having the AuCl(PPh2) coordinated to the polymeric chain which can be attributed to a probable coordination of the Au fragments to the polymer during the heating process. In the system (II) the no presence of metallic nanostructures containing Si was attributed to the absence of Si ultraestructures due to the no cross-linking of the precursor by volatilization of the silicon molecular compound. In the system (III) the ciclic trimer acts each one as template for the formation of mesostructured products remaining separated at the micro level.