JIN L. LIU¹, SHUAI XU¹, BING YAN^1,*

Abstract

Two novel silica-based organic-inorganic hybrid materials containing a Schiff-base organic compound were prepared through a covalent self-assembly process via a sol-gel technology. The organic Schiff-base compound N,N’-bis(salicylidene)ethylenediamine (BSEA) was first prepared and then functionalized with trialkoxysilyl group. The as-obtained silylated precursor (BSEA-Si) was used as a functional bridging molecular to submitted to hybridization with tetraethoxysilane (TEOS) through a polycondensation or cross-linking reaction between the terminal silanol groups of the silylated precursors and the OH groups of hydrolyzed TEOS. The resulting amorphous materials (BSEA-Hybrids and BSEA-Eu-Hybrids) exhibit regular uniform microstructures and no phase separation happened for the organic and the inorganic compounds were covalent linked through Si-O bonds via a self-assemble process. BSEA-Hybrids has strong blue luminescence due to the Schiff-base functional group, BSEA-Eu-Hybrids can show the characteristic luminescence of Eu3+ ion for the energy transfer process take place successfully between the organic parts and the Eu3+ ion..

Keywords

Schiff-base compound, Hybrid material, Covalently bonded, Sol-gel.

Submitted at: Dec. 21, 2007
Accepted at: Dec. 10, 2008

Citation

JIN L. LIU, SHUAI XU, BING YAN, Molecular based hybrid materials by assembling inorganic network with Schiff base compounds via covalent bonds, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 12, pp. 3357-3363 (2008)

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