全氟羧酸钕2,2’-联吡啶配合物的合成及其光学特性  

Synthesis and Optical Properties of Nd(Ⅲ) Perfluoro-Carboxylate Complexes with 2,2'-Bipyridine

作　　者：佘江波[1] 李冬冬[2] 王鹏飞[1] 朱永刚[1] 韦玮[3] 彭波[1,3] 

机构地区：[1]中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,陕西西安710119 [2]西安邮电学院电子工程学院,陕西西安710061 [3]南京邮电大学信息材料与纳米技术研究院,江苏南京210003

出　　处：《光谱学与光谱分析》2012年第4期1047-1050,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(60977023,61108061)资助

摘　　要：合成了一系列全氟羧酸钕2,2’-联吡啶配合物:Nd(CF3COO)3.Dipy,Nd(C2F5COO)3.Dipy和Nd(C3F7COO)3.Dipy,并通过红外光谱、元素分析、热分析、紫外可见近红外吸收光谱和荧光光谱对其进行了表征。配合物的分解温度都高于260℃,最大失重温度超过340℃,说明它们具有良好的热稳定性。全氟羧酸的碳链长度和钕离子配位结构的差异,引起配合物的吸收跃迁强度的变化。根据紫外可见近红外吸收图谱,计算获得了Judd-Ofelt参数和受激辐射跃迁特性。配合物的受激发射面积分别为:3.63×10-20,2.36×10-20和1.49×10-20 cm2,可以和文献报道的无机材料媲美,它们将是非常有潜力的液体激光介质。A series of neodymium complexes, Nd（CFsCOO）s · Dipy, Nd（C2F5COO）s · Dipy and Nd（CsFTCOO）s · Dipy were synthesized and characterized by FTIR spectra, elemental analysis, thermogravimetric analysis, UV-Vis-NIR absorption spectra and PL spectra. The decomposition temperature was found to be more than 260 ℃ and maximum weight losses rates above 340 ℃which indicate that they have good thermal stability. The low vibrational energy C--F bonds were used to replace the H bonds in organic group for improving the optical properties of materials. The length of carbon chain and the coordination structure of Nd（ II1 ） affect the absorption transition strength. According to the UV-Vis-NIR absorption spectra, the Judd-Ofelt parameters were calculated and the radiative properties were also presented. The stimulated emission cross-sections of the Nd（CFsCOO）s Dipy, Nd（C2FsCOO）s ·Dipy and Nd（CsFTCOO）s · Dipy were 3. 63X 10-20, 2. 36× 10-20 and 1.49×10-20 cm2 respectively, which were as good as some reported inorganic materials. These complexes will be a series of promising materials for liquid laser application.

关 键 词：钕配合物 液体激光 JUDD-OFELT理论 受激发射截面 

分 类 号：O614.3[理学—无机化学]