【Abstract】Several new binary complexes which were composed of europium (terbium, dysprosium) and tert-butylbenzoic acid have been synthesize d. Such photoactive complexes with different concentrations were introduced into inorganic host tetrethoxysilane (TEOS) to prepare solid powder materials throug h hydrolysis and polycondensation processes (sol-gel method). Ultra-violet abs orption, fluorescence excitation and emission spectra and scanning electronic mi croscope were applied to characterize the sample...

【Key words】 Sol-gel; Luminescence; Hybrid materials; Rare earth i ons;