Two novel luminescent metallic based organic-inorganic functionalized silica hybrid materials

摘要

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 x 10(-5) M (Ha) and 6.45 x 10(-5) M (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. (c) 2015 Elsevier B.V. All rights reserved.