陈连清，周　泉，黄林伟，谢林波

(中南民族大学 催化材料科学国家民委-教育部共建重点实验室 武汉430074)



邻菲啰啉缩单胺类席夫碱衍生物及其铕配合物的合成和光物理性能研究

陈连清，周泉，黄林伟，谢林波

(中南民族大学 催化材料科学国家民委-教育部共建重点实验室 武汉430074)

摘要为改变稀土铕配合物的配体类型，寻找红光强度更好的材料，以Eu(Ⅲ)为中心原子，乙酰丙酮(acac)为第一配体，3个邻菲啰啉缩单胺类席夫碱衍生物作为第二配体，成功合成了3种新的铕金属的配合物.测试了3种配合物的紫外、荧光光谱，探讨了其光物理性能.结果表明：随着第二配体结构共轭程度增加，在紫外区的吸收逐渐增强.其荧光发射峰均为约613 nm，归属为Eu(3+)的5D0→7F2能级间的跃迁，3种配合物在紫外灯下均发出明亮的红光.

关键词邻菲啰啉席夫碱衍生物；稀土铕配合物；红光材料；光物理性能

Synthesis and Photophysical Properties of Phenanthroline Monoamine Schiff Base Derivatives and Their Europium Complexes

ChenLianqing,ZhouQuan,HuangLinwei,XieLinbo

(Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education,South-Central University for Nationalities, Wuhan 430074, China)

AbstractIn order to change the ligand type of the rare earth europium complexes and develop materials of better red light emission, three novel europium complexes were synthesized with Eu(Ⅲ) as the central atom, acetylacetone (acac) as the first ligand, and three phenanthroline monoamine schiff base derivatives as the respective second ligand. The complexes were tested with UV and fluorescence spectra and their photophysical properties were also discussed. The results showed that the absorption in the UV region was enhanced gradually with the increase of the conjugation degree of the second ligand. The fluorescence emission peak was at about 613 nm attributed to the5D0→7F2characteristic transition of Eu3+. All three complexes emitted bright red fluorescence under UV exposure.

Keywordsphenanthroline schiff base derivatives; rare earth europium complexes; red light material; photophysical properties

稀土金属的发光现象一直受到各领域广泛而深入的研究[1,2].稀土配合物作为量子产率较高的电致发光材料，具有重要的理论意义和应用价值[3,4].目前在三基色(红、绿、蓝)发光材料中，最困难的是研发红色发光材料[5-7]，主要由于发射红光的跃迁能隙较小，不能很好地与载流子中传输层能量相匹配，很难有效地让电子和空穴的复合发生在红光发光区.而含Eu(Ⅲ)的配合物是一类较好的红色发光物质，具有发光强度高、荧光颜色纯正等优点[8].由于Eu3+f-f跃迁禁阻，导致它在紫外区吸收很弱，发光效率不高……