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Optical absorption of polyethylene glycol (PEG) modified silica matrix embedded with nanocrystalline silver

“…PEG modified silica matrix showed some interesting properties as discussed by Nishio et al [9]. They found a comb-like structure with -O -Si-O -in the middle and -(C 2 H 4 ) n -OH attached to the alternate Si atoms.…”

Organic/inorganic nanocomposite gels employed as electrolyte supports in Dye‐sensitized Photoelectrochemical cells

“…Their stability has recently led to conclusions that the forces holding together the two subphases should not be so weak as it has been so far accepted. Thus recent works talk of strong bonds between the two subphases [29,30]. It has even been suggested that covalent bonds can be formed between the two subphases during the solgel process [30].…”

“…Thus recent works talk of strong bonds between the two subphases [29,30]. It has even been suggested that covalent bonds can be formed between the two subphases during the solgel process [30]. In any case, Class I materials are distinguished from Class II hybrids, where the covalent bond already exists in the precursor compound [22,23].…”

ELECTRICAL AND STRUCTURAL PROPERTIES OF NEW Li+ ION CONDUCTING SOL-GEL DERIVED ORMOLYTES: (SiO2-PEG)-LiCF3SO3

“…The structural studies were carried out using a Hitachi scanning electron microscope (model S-4300) and a Bio-Rad FT-IR spectrometer (model: FT-165, range: 400-4000 cm" 1 , resolution: 2 cm" 1 ). Coulombic interactions as suggested by spectroscopy and DSC studies [6][7][8][9][10][11][12][13]. Further increase in the [Li/O] value led to a decrease in the conductivity probably due to the immobilization of the polymer chains via 0-Li + -0 cross-linking [6][7][8][9][10][11][12][13].…”

“…Following the work of Ravaine et al [4], the sol-gel method has also been applied to combine the Si0 2 with a polymer, e.g., PEO, PEG, etc., homogeneously at the molecular level together with a lithium salt. These inorganic-organic hybrids have been called as ORMOLYTEs, an acronym for organically /Modified electro/ytes [5][6][7][8][9][10]. Recently, the present group prepared new Li + ion conducting LiCF 3 S0 3 doped Si0 2 -PEG ORMOLYTEs via traditional and sono-catalysis routes of sol-gel method and the compositional variation of ionic conductivity (a) was explained with the help of direct determination of ionic mobility and mobile ion concentration [11,12].…”