摘要
以二苯甲酰甲烷(DBM)和2,2’-联二吡啶(BIPY)为配体,采用乙醇-水溶液析出法合成了三种稀土-β-二酮配合物:Gd(DBM)3BIPY、Sm(DBM)3BIPY、La(DBM)3BIPY。通过元素分析、MS、IR对配合物进行了表征,初步研究了这些配合物的紫外光谱性质。研究表明:配体DBM以烯醇式异构体与金属离子螯合,受螯合效应的影响,配体的IR、UV特征吸收峰均发生红移,染料在340nm-400nm近紫外区有强烈的电子吸收。
Three rare earth β -diketone complexes： Gd（DBM）3BIPY, Sm（DBM）3BIPY, La（DBM）3BIPY were synthesized by a precipitation method with a mixture of ethanol and water using dibenzoylmethane （DBM） and 2,2＇-dipyridyl （BIPY） as the ligands. The compounds were characterized by elemental analysis, MS, IR, and UV spectra. The results showed that the ligand DBM was coordinated to the metal ions acting as the enol form isomer, the main absorption peaks of the ligands in IR, UV spectra were bathochromic due to the influence of chelating effect. The dyes exhibited a strong absorption in the near ultraviolet region of 340-400 nm.
出处
《染料与染色》
CAS
2005年第4期16-18,共3页
Dyestuffs and Coloration
基金
国家自然科学基金资助项目(60490290)
