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Proceedings Paper

Probing the structural development of dip-coated silica sol-gel thin films via fluorescent probe molecules
Author(s): Hermes Soyez; Michael Huang; Bruce S. Dunn; Jeffrey I. Zink
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Paper Abstract

Structural formation of dip-coated silica sol-gel thin films is monitored in situ via fluorescence depolarization with luminescent probe molecules. Pyranine (trisodium 8-hydroxy- 1,2,6-pyrenetrisulfonate) and prodan [6-propionyl-2- (dimethylamino)naphthalene] are chosen as the probe molecules for these experiments and are dissolved into the sol gel solution in millimolar quantities. This provides sufficient luminescence intensity without interfering with the film drying process. Fluorescence depolarization yields results which directly correlate to microviscosity increases as the film progresses from liquid to solid. These results allow for further quantitative support of a model previously presented concerning the formation of sol-gel thin films.

Paper Details

Date Published: 2 October 1997
PDF: 9 pages
Proc. SPIE 3136, Sol-Gel Optics IV, (2 October 1997); doi: 10.1117/12.284115
Show Author Affiliations
Hermes Soyez, Univ. of California/Los Angeles (United States)
Michael Huang, Univ. of California/Los Angeles (United States)
Bruce S. Dunn, Univ. of California/Los Angeles (United States)
Jeffrey I. Zink, Univ. of California/Los Angeles (United States)

Published in SPIE Proceedings Vol. 3136:
Sol-Gel Optics IV
Bruce S. Dunn; John D. Mackenzie; Edward J. A. Pope; Helmut K. Schmidt; Masayuki Yamane, Editor(s)

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