Sol-gel derived glasses

M. Kanungo and M.M. Collinson, Diffusion of redox probes in hydrated sol-gel-derived glasses. Effect of gel structure. Anal. Chem. 75, 6555-6559 (2003). 

L. Zheng and J.D. Brennan, Measurement of intrinsic fluorescence to probe the conformational flexibility and thermodynamic stability of a single tryptophan protein entrapped in a sol-gel derived glass matrix. Analyst 123, 1735-1744 (1998). 

L. Zheng, W.R. Reid, and J.D. Brennan, Measurement of fluorescence from tryptophan to probe the environment and reaction kinetics within protein-doped sol-gel-derived glass monoliths. Anal. Chem. 69, 3940-3949 (1997). 

A.M. Hartnett, C.M. Ingersoll, G.A. Baker, and F.V. Bright, Kinetics and thermodynamics of free flavins and the flavin-based redox active site within glucose oxidase dissolved in solution or sequestered within a sol-gel-derived glass. Anal. Chem. 71, 1215-1224 (1999). 

Schmitt, M.L., J.E. Shelby and M.M. Hall, Preparation of hollow glass microspheres from sol-gel derived glass for application in hydrogen gas storage. /. Non-Crystalline Solids, 352, 626-631,2006. 

X.L. Duan, D.R. Yuan, X.F. Cheng, etal. Spectroscopic properties of Co ZnAhOr Nanocrystals in sol-gel derived Glass-Ceramics, T. Physics and Chemistry of Solids, 64, 1021(2003). 

Figure 4 Infrared absorption spectra for (a) sol-gel-derived glass containing both organic and hydroxyl impurities (b) dense neodymia-silica glass with approximately 2500 ppm hydroxyl content and (c) dense 1 wt % neodymia-silica glass containing less than 1 ppm hydroxyl. (Reproduced from Ref. 28.)...

The vanadia/silica system [53] is another one in which Si NMR data, at least for the sol-gel derived glasses on which such data have been reported, provide only rough qualitative support for conclusions based primarily on other types of data [53f]. In the V203/Si02 system, NMR results have been more useful to date [53a,b]. Figure 34.43 shows NMR spectra, both MAS and static-sample results, on a 10% vanadia/silica system under ambient (wet) conditions... 

Sol-gel derived glasses, encapsulating neutral carriers were prepared as ion-sensing membranes in ISFETs or as supported membranes in macroelectrodes. Thromobogenicity of the membranes proved to be much better than that of plasticized poly(vinyl chloride) membranes, which makes them successful candidates in the analysis of biological samples. 

Optical properties of 3-hydroxyflavone (3-HF) doped sol-gel derived glass were studied (Carturan, 2003). The intramolecular excited-state proton transfer process is strongly affected by the chemical environment. The main results are that the Stokes-shifted emission from 3-HF tautomeric form is enhanced at increasing trifunctional alkoxide amount and at decreasing polarity of the non-hydrolizable groups. 

Strohhbfer C., Pick J., Vasconcelos H.C., Almeida R.M. Active optical properties of Er-containing crystallites in sol-gel derived glass films. J. Non-Cryst. Solids 1988 226 182-191 Sussner H., Vacher R. High precision measurements ofBrillouin scattering frequencies. Appl. Opt 1979 18 3815-3818... 

CdS and PbS containing sol-gel derived glasses have been reported by several authors (Li, 1994 Gaglielmi, 1994). 

Nogami M. Persistent spectral hole burning of Sm and Eu ions in sol-gel derived glasses. J. Non-Cryst. Sol. 1999 170-175 61-76... 

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