Photofunctional terbium centered inorganic/organic hybrid material with the functionalized 5-dihydroxybenzoate linkage

• Autorzy: Li Y. , Sui Y. L. , Yan B.
• Języki publikacji: PL

Abstrakty

EN

In this study, silica-based organic-inorganic hybrids were prepared using sol-gel methods. A new kind of monomer (DHBA-TESPI) was derived by modifying the double hydroxyl groups of 3, 5-dihydroxybenzoic acid (DHBA) with 3-(triethoxysilyl)-propyl isocyanate (TESPI) through the addition reaction. Then, the obtained compound and tetraethoxysilane (TEOS) were used as the inorganic and organic counterparts respectively. Coordination reaction between Tb3+ and the carboxylic groups of the monomer happen simultaneously. IR, NMR, UV/Vis absorption, low-temperature phosphorescence spectroscopy and fluorescence spectroscopy were used to characterize the hybrids. The final materials exhibited strong green-colored fluorescence (Tb3+), which can be explained by the intramolecular energy transfer caused by coordination of the organic counterpart. The spectroscopic data also revealed that the triplet state energy of the organic ligand matches the emissive energy level of Tb3+.

Słowa kluczowe

EN

chemical modification; photoluminescence; organic-inorganic hybrids; rare earth ions; sol-gel process

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2012
• Tom: Vol. 30, No. 1
• Strony: 39--44
• Opis fizyczny: Bibliogr. 19 poz.

Twórcy

autor

Li Y.

autor

Sui Y. L.

autor

Yan B.

• School of Materials Science and Engineering, University of Shanghai for Science and Technology, Jungong Road 516, Shanghai 200093, China

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