Synthesis, characterizations and luminescent properties of three novel aryl amide type ligands and their lanthanide complexes
作者:Wei-Na Wu、Wen-Bing Yuan、Ning Tang、Ru-Dong Yang、Lan Yan、Zi-Hua Xu
DOI:10.1016/j.saa.2006.01.031
日期:2006.11
Three new aryl amide type ligands, N-(phenyl)-2-(quinolin-8-yloxy)acetamide (L(1)), N-(benzyl)-2-(quinolin-8-yloxy)acetamide (L(2)) and N-(naphthalene-1-yl)-2-(quinolin-8-yloxy)acetamide (L(3)) were synthesized. With these ligands, three series of lanthanide(III) complexes were prepared: [Ln(L(1))(2)(NO(3))(2)]NO(3), [Ln(L(2))(2)(NO(3))(2)(H(2)O)(2)]NO(3).H(2)O and [Ln(L(3))(2)(NO(3))(2)(H(2)O)(2)]NO(3)
三个新的芳基酰胺类配体,N-(苯基)-2-(喹啉-8-基氧基)乙酰胺(L(1)),N-(苄基)-2-(喹啉-8-基氧基)乙酰胺(L(2 ))和N-(萘-1-基)-2-(喹啉-8-基氧基)乙酰胺(L(3))合成。有了这些配体,制备了三个系列的镧系元素(III)配合物:[Ln(L(1))(2)(NO(3))(2)] NO(3),[Ln(L(2))( 2)(NO(3))(2)(H(2)O)(2)] NO(3).H(2)O和[Ln(L(3))(2)(NO(3)) (2)(H(2)O)(2)] NO(3).H(2)O(Ln = La,Sm,Eu,Gd)。通过元素分析,摩尔电导率,(1)H NMR光谱,IR光谱和TG-DTA对复合物进行表征。分别详细研究了配合物的固态和三态态能量的荧光性质。发现Eu(III)配合物具有固态的亮红色荧光。三个配体的激发三重态的能量为20325 cm(-1)(L(3)),21053