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Using the sol-gel technique for the hydrolysis of tetraethoxysilane (TEOS), the synthesis of porous silicate films was carried out in the presence of additives comprising the non-ionic surfactant Triton X-100 (type I films), or the polymer poly(ethylene oxide) (PEO) (type II films) with molecules of the fluorophore pyrene (Py) and with Cu 2+ ions as luminescence quenchers, incorporated...
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