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合成了4种掺Nd3+的配合物分别是Nd(C2F5COO)3Tfpy,Nd(C3F7COO)3Tfpy,Nd(C2F5COO)2(C6F5COO)Tfpy和Nd(C2F5COO)3Phen,来研究不同的配体对配合物发光性能的影响。通过紫外吸收谱、红外光谱和核磁共振H谱表征了配合物的结构。在吸收谱、荧光谱和辐射寿命的基础上,应用Judd-Ofelt理论对4种配合物进行了分析。结构分析表明配体和中心的钕离子均成功配位。JO理论分析得到较小的?2表明钕离子和配体是通过离子键的形式配合的。配合物中的环状结构可以显著地提高钕离子的荧光量子效率。与常用的第二配体Phen相比,Tfpy由于自身较小的对称性和含较少的H原子而成为更好的中性第二配体。本研究合成的4种配合物都有较大的受激辐射面积,可以作为潜在的液体激光材料。
Four kinds of Nd3 + -containing complexes were synthesized, which were Nd (C2F5COO) 3Tfpy, Nd (C3F7COO) 3Tfpy, Nd (C2F5COO) 2 (C6F5COO) Tfpy and Nd Impact. The structure of the complex was characterized by UV absorption, IR and 1H NMR. Based on the absorption, fluorescence and radiation lifetimes, four complexes were analyzed by Judd-Ofelt theory. Structural analysis showed that the ligand and the center of neodymium ions were successfully coordinated. The theoretical analysis of JO shows that the smaller value of? 2 indicates that the neodymium ion and the ligand are coordinated by the ionic bond. The ring structure in the complex can significantly increase the fluorescence quantum efficiency of neodymium ions. Tfpy is a better neutral second ligand due to its smaller symmetry and fewer H atoms than the commonly used second ligand, Phen. The four complexes synthesized in this study all have larger stimulated radiation area and can be used as potential liquid laser materials.