Citation:
LIN Meijuan, WANG Wen, ZHANG Wengong. Synthesis and Photo-Luminescence Properties of 3,5-Dinitro Salicylic Acid Europium/Polymer Materials[J]. Chinese Journal of Applied Chemistry,
;2011, 28(8): 879-886.
doi:
10.3724/SP.J.1095.2011.00594
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3,5-Dinitro salicylic acid Eu(Ⅲ) complex(EuDNS) and its polymer composites were synthesized.The complex and polymers were characterized by elemental analysis,IR,UV-Vis methods.Effects of the complex content and polymer materials on the fluorescence property were studied.The complex may form a chelate heterocyclic structure and result in a wide UV-Vis absorption band that is well matched to excited wavelength,so that the complex can emit strong characteristic red luminescence of Eu(Ⅲ) ion.Even if the mass fraction of complex is 0.25%,EuDNS/PMMA(PMMA:polymethyl-methacrylate) polymer has still very strong fluorescence property.The order of the emission from strong to weak for the copolymers is:P(MMA-co-St)> PMMA> P(MMA-co-AA)(AA:acrylic acid).The acrylic acid comonomer can quench luminescence.The results show the inhibition and retardation effects of the complex on free radical copolymerization of styrene/methyl methacrylate initiated with azobisisbutyronitrile at 60℃,and the inhibition effect increases with the increasing styrene(St) comonomer content,whereas P(MMA-co-St) transparence decreases.The EuDNS/PMMA polymer has a longer apparent fluorescent lifetime than the corresponding complex.
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Keywords:
- dinitro salicylic acid,
- rare earth europium,
- complex,
- polymer,
- photoluminescence
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