A luminescent dinuclear Eu(III) complex based on 2,8-bis(4′,4′,4′,-trifluoro-1′,3′-dioxobutyl)-dibenzothiophene for light-emitting diodes |
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| Authors: | Shenggui Liu Pei He Jianxin Shi |
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| Affiliation: | a State Key Laboratory of Optoelectronic Materials and Technologies, Ministry of Education Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
b School of Chemistry Science and Technology, Zhanjiang Normal University, Development Center for New Materials Engineering and Technology, Universities of Guangdong, Zhanjiang 524048, PR China |
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| Abstract: | A dinuclear Eu (III) complex Eu2(dbt)3·4H2O was synthesized, where H2dbt was 2,8-bis(4′,4′,4′,-trifluoro-1′,3′-dioxobutyl)-dibenzothiophene. The complex emits the characteristic red luminescence of Eu3+ ion due to the 5D0→7FJ(J=0-4) transitions under 395 nm-light excitation with a luminescent quantum efficiency of 17%. The complex is thermally stable up to 280 °C. It was found that the complex can be effectively excited by a 395 nm-emitting InGaN chip. Bright red light was obtained using the complex as light color-conversion material. |
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| Keywords: | Lanthanide complex Phosphor Luminescence LED |
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