Author/Authors :
Gomes Correia، نويسنده , , S.M. and De Zea Bermudez، نويسنده , , V and Silva، نويسنده , , M.M and Barros، نويسنده , , S and Sل Ferreira، نويسنده , , R.A and Carlos، نويسنده , , L.D and Passos de Almeida، نويسنده , , A.P and Smith، نويسنده , , M.J، نويسنده ,
Abstract :
Hybrid materials produced by the versatile sol–gel process with a wide sodium triflate, NaCF3SO3, concentration range have been studied. The host matrix of these xerogels, designated as di-ureasil and represented by U(600), is composed by a siliceous network bonded through covalent bonds to short polyether chains by means of bridging urea groups. The results obtained reveal that at high salt concentration, this system forms crystalline phases. The most conducting ormolyte exhibits a conductivity of 3.6×10−7 Ω−1 cm−1 at room temperature.
Keywords :
Di-ureasils , X-ray diffraction , Differential scanning calorimetry , Complex impedance spectroscopy , NA+
