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Photosensitive Ti 1−x Co x O 2 gel films are prepared by chemical modification with benzoylacetone, and then their Fourier transform infrared spectra and ultraviolet visible spectra are measured. Results show that the chelate rings of benzoylacetone with Ti ions are formed in the Ti 1−x Co x O 2 gel films. With irradiation of UV light, the chelate rings...
A novel technique has been developed to fabricate surface-relief gratings using photosensitive gel films. Gel films which were derived from metal-alkoxides chemically modified with β-diketones were photosensitive owing to remaining chelate rings; the UV-irradiation of these gel films substantially decreased their solubility in acidic aqueous solutions or organic solvents. Leaching of the gel films...
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