摘要
在无水乙醇中，以水杨酸（Hsal）和邻菲啰啉（phen）为配体，不同摩尔比铕钆离子为中心体，合成了一系列组成为NaEuxGd1-x（sal）4（phen）2（x=0．1～1．0）的固体配合物。IR光谱表明，水杨酸的酚羟基没有参与配位，羧基以桥联方式与钠和铕或钆原子配位；UV光谱显示，配合物中phen与稀土离子之间的能量传递是主要过程，配合物的最大吸收与phen相比略有红移；FS光谱表明，在该系列配合物中，不仅配体可以将吸收的能量传递给铕离子，使其发光，而且不发光的钆配合物也可将其吸收的能量传递给铕离子，增强铕的发光强度。
A series of multinuclear complexes NaEu,Gd1-x（sal）4（phen）2（x = 0. 1 - 1.0） of salicylic acid and o-phenanthroline with different molar ratios of Eu^3＋ to Gd^3＋ were synthesized in absolute ethanol, and were characterized by IR, UV and FS spectra. IR results reveal that hydroxyl group has not been coordinated and each carboxylate group acts as a bridging ligand between the Na ion and Eu or Gd, via the carboxylate O atoms, and chemical bonds are formed be tween rare earth ions and nitrogen atoms of phen. As for UV spectra of the complexes, energy transfer between phen and RE^3＋ is the primary process, and the main absorption peaks show a slighter red shift than that of phen. FS spectra of the complexes show that not only the ligands but also the gadolinium complex can transfer the absorbed energy to Eu^3＋ ion in the complexes.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2006年第3期361-365,共5页
Journal of the Chinese Society of Rare Earths
基金
浙江省教育厅科研计划资助项目(0424XP18)
关键词
铕
钆
水杨酸
邻菲啰啉
光致发光
稀土
europium
gadolinium
salicylic acid
o-phenanthroline
luminescence
rare earths
作者简介
徐存进（1970-），男，浙江瑞安人，硕士；研究方向：稀土配位化学.通讯联系人（E-mail：xcj7215@yahoo．com．cn）
