Effect on the fluorescence branching ratio of different synergistic ligands in neodymium complex doped PMMA |
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| Authors: | Xin Wang Kang Sun Lijuan Wang Xiujie Tian Qijin Zhang Biao Chen |
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| Institution: | 1. CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Anhui Key Laboratory of Optoelectronic Science and Technology, Hefei, Anhui 230026, P.R. China;2. Department of History of Science and Technology and Archaeometry, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China |
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| Abstract: | A series of neodymium complexes Nd(TTA)3Lx (where TTA = α-thenoyltrifluoroacetonato, Lx (x = 1–5) = H2O, triophenylphosphine oxide (Tppo), 2,2-bipyridine (Bipy), 1,10-phenanthroline (Phen) and 2- (N,N-diethylanilin-4-yl)-4,6-bis(3,5-dimethylpyrazol-1-yl)-1,3,5-triazine (Dpbt) were synthesized and incorporated in poly(methyl methacrylate). Their absorption spectra were measured and analyzed using Judd–Ofelt theory. Near-infrared luminescent spectra were studied and the radiative properties have been stimulated. Laser parameters such as effective bandwidths (Δλeff), stimulated emission cross-sections (σe), and gain bandwidth (σg) had also been calculated and compared with other systems. The effect on the fluorescence branching ratio (β) in the 4F3/2→4I11/2 transition of different synergistic ligands had been investigated and the relation between β and Judd–Ofelt parameter Ω2, Ω4, Ω6 was discussed. In conclusion, among the five neodymium complexes, Nd(TTA)3Dpbt has the largest Ω2 parameter (33.72 × 10? 20 cm2), stimulated emission cross-sections, which is found promising to be a candidate for laser materials in further application. |
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