Abstract
Two novel terbium-based organic/inorganic hybrid materials have been fabricated through sol–gel processing technology. Both materials could exhibit striking green emissions under ultra-violet excitations. In contrast to the physical doped material (Hb), the strong covalent-bonded material (Ha) demonstrated higher thermal stability, photostability and well-dispersed spherical microstructure. The exposure to nitrite aqueous solution would result in suppression of green luminescence and the detection limits for the two hybrids were determined to be 4.78×10−5M (Ha) and 6.45×10−5M (Hb) respectively. The present work proved the feasibility of using sol–gel derived lanthanide hybrid materials as a way of signal transduction for recognition of important anions.
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