Doped sol-gel glasses

Zusman R., Rottman C., Ottolenghi M., Avnir D., Doped sol-gel glasses as chemical sensors, J. Non-Cryst. Solids 1990 122 107-109. 

Lee S., Okura I., Porphyrin-doped sol-gel glass as a probe for oxygen sensing, Anal. Chim. Acta 1997 342 181-188. 

Itoh K, Kamata N, Shimazu T, et al. An improved emission characteristics of Tb3+-doped sol-gel glasses by utilizing high solubility of terbium nitrate. J Lumin 2000 87-89 676-8. 

Figure 125. Response of Pt(OEP)-doped sol-gel glass on switching between (a) 100% nitrogen and (b) 100% oxygen. Reprinted with permission from Lee, S. Okura, I. Analyst 1997, 122, 81.

Fig. 15.3 (a) Room-temperature phosphorescence spectra of platinum-octaethylporphyrin (PtOEP)-doped sol-gel glass under different atmospheric conditions top), ambient conditions (middle), and bottom). Excitation wavelength, 535 nm. (b) Response time, relative intensity change, and reproducibility of sensor response on switching between 100 % nitrogen (a) and 100 % oxygen (Reprinted with permission from Lee and Okura 1997, Copyright 1997 Royal Society of Chemistry)... 

Some of the properties and advantages of the doped sol-gel glasses were summarized as follows (Avnir, 1992) ... 

Diagnostic applications such as on-line sensors, disposable sensors and sol-gel biosensors were reported for organically doped sol-gel glass (Lev, 1992). Ethylenediamine tetraacetic acid (EDTA) was encapsulated in a sol-gel derived optically transparent glass (Zaitoun, 1997). The complexation of metal cahons with EDTA in solutions and in gels was evidence by the formation of individual colors. 

Lawrence Livermore National Laboratory 1981 Rev. 2, Report M-095 Stone B.T., Bray K.L. Fluorescence properties of Er +-doped sol-gel glasses. J. Non-Cryst. Solids 1996 197 136-144... 

Plaschke M, Czolk R, Ache HJ (1995) Huorimetric determination of mercury with a water-soluble porphyrin and porphyrin-doped sol-gel films. Anal Chim Acta 304 107-113 Lee S-K, Okura 1 (1997) Porphyrin-doped sol-gel glass as a probe for oxygen sensing. Anal Chim Acta 342 181-188... 

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