Three ternary luminescent complexes, Eu (deuterated 1,3-diphenyl-1,3-propanedione)3(1,10-phenanthroline), Eu (deuterated 1,3-diphenyl-1,3-propanedione)3(2,2′-bipyridine), and Eu (deuterated 1,3-diphenyl-1,3-propanedione)3 (bathophenanthroline) were synthesized using bidental oxygen and nitrogen as ligands. Luminescent polymers were fabricated by incorporating deuterated Eu(III) complexes in a poly(methyl methacrylate) matrix. Luminescent poly(methyl methacrylate) containing Eu (deuterated 1,3-diphenyl-1,3-propanedione)3 (bathophenanthroline) exhibited relatively higher quantum yield, faster radiation rate, sharper red emission and larger stimulated emission cross-section (quantum yield 36%, radiation rate 8.6 × 102 s−1, full width at half maximum 3.4 nm, and stimulated emission cross-section σp = 1.4 × 10−20 cm2) of the PMMA matrix. The value of σp was the same order as the values of Nd-glass laser for practical use. Additionally, the thermal behaviors of the Eu(III) ternary complexes were studied, and the results indicated that all of them can be long-term used in high temperature environment. Prepared luminescent polymer including Eu (deuterated 1,3-diphenyl-1,3-propanedione)3 (bathophenanthroline) showed promising results for applications in novel organic Eu(III) devices, such as high-power laser materials and optical fibers.
PMMA Phen Polymer Science Series Bipy PMMA Matrix
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