Abstract
Sol-gel thin films have been doped with bromophenol blue and eriochrome cyanine RC for measuring pH and Cu++ in solution respectively. The films were coated inside glass tubes by a novel method. Films doped with bromophenol blue responded to pH changes from pH 3 to 8. They were stable to variations in temperature from 20°C to 40°C. The sensing films have been subjected to leaching studies in different pH buffer solutions. Copper ions in solution have been measured to a minimum concentration of 0.6 ppm by eriochrome immobilised in sol-gel films. The interferences of other metal ions were also studied. Doped sol-gel films coated onto the inside of test tubes offer a simple, none-invasive, reusable and fast optical chemical sensing technique for the measurement of colour by spectroscopy or colorimetry.
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REFERENCES
R.M. Almeida and X. Orignac, Journal of Sol-Gel Science and Technology 2, 465 (1994).
R.A. Dunbar, J.D. Jordan, and F.V. Bright, Analytical Chemistry 68, 604 (1996).
C.M. Ingersoll and F.V. Bright, CHEMTECH 27, 26 (1997).
G.E. Badini and T.V. Grattan, Rev. Sci. Instrum. 66(8), 4034 (1995).
J.E. Lee and S.S. Saavedra, Analytica Chimica Acta 285, 265 (1994).
S.B. Bambot, J. Sipior, J.R. Lakowicz, and G. Rao, Sensors and Actuators B22, 181 (1994).
R.M. Almeida and C.G. Pantano, J. Appl. Phys. 68(8), 4225 (1990).
M.C. Gomes, A.C. Fernandes, B.S. Almeida, and R.M. Almeida, Journal of Materials Science 30, 3893 (1995).
Y. Yang, P.A. Wallace, and M. Campbell, Proc. SPIE-Int. Soc. Opt. Eng. 2594, 233 (1993).
J.D. Ingle, J. Louch, R.D. Waddle, and E.V. Siemion, Proc. SPIE-Int. Soc. Opt. Eng. 2872, 112 (1996).
C.J. Brinker, A.J. Hurd, G.C. Frye, K.J. Ward, and C.S. Ashley, Journal of Non-Crystalline Solids 121, 294 (1990).
C.J. Brinker, A.J. Hurd, P.R. Schunk, G.C. Frye, and C.S. Ashley, Journal of Non-Crystalline Solids 147/148, 424 (1992).
I.M. Thomas, in Sol-Gel Optics: Processing and Applications, edited by L.C. Klein (Kluwer Academic Publishers, Boston, 1994), p. 141.
L. Yang and S.S. Saavedra, Analytical Chemistry 67, 1307 (1995).
B.D. Gupta and D.K. Sharma, Optics Communications 140, 32 (1997).
C.A. Browne, D.H. Tarrant, M.S. Olteanu, J.W. Mullens, and E.L. Chronister, Analytical Chemistry 68, 2289 (1996).
M.R. Shahriari and J.Y. Ding, in Sol-Gel Optics: Processing and Applications, edited by L.C. Klein (Kluwer Acadamic Publishers, Boston, 1994), p. 279.
B.D. MacCraith, V. Ruddy, and C. Potter, Electronics Letters 27, 14, 1247 (1991).
D. Avnir, S. Braun, O. Lev, D. Levy, and M. Ottolenghi, in Sol-Gel Optics: Processing and Applications, edited by L.C. Klein (Kluwer Academic Press, Boston, 1994), p. 540.
J.M. Barrero, C. Camara, M.C. Perez-Conde, C. San Jose, and L. Fernandez, Analyst 120, 431 (1995).
I. Kuselman and O. Lev, Talanta 40(5), 749 (1993).
B.I. Kuyavskaya, I. Gigozin, M. Ottolenghi, and D. Avnir, Journal of Non-Crystalline Solids 147/148, 808 (1992).
O. Lev, Analusis 20, 543 (1992).
S.A. Wallington, T. Labayan, A. Poppe, N.A.J.M. Sommerdijk, and J.D. Wright, Sensors and Actuators B38/39, 48 (1997).
N.A.J.M. Sommerdijk, A. Poppe, C.A. Gibson, and J.D. Wright, J. Mater. Chem. 8, 565 (1998).
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Javaid, M.A., Keay, P.J. A Generic Technique for Coating Doped Sol-Gel Films onto the Inside of Tubes for Use as Colorimetric Sensors. Journal of Sol-Gel Science and Technology 17, 55–59 (2000). https://doi.org/10.1023/A:1008709005382
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DOI: https://doi.org/10.1023/A:1008709005382