文献类型：期刊文献

中文题名：Crystal structures and fluorescence properties of lanthanide complexes prepared with 2,2'-biphenyldicarboxylic acid and 2,2':6',2''-terpyridine

英文题名：Crystal structures and fluorescence properties of lanthanide complexes prepared with 2,2′-biphenyldicarboxylic acid and 2,2′:6′,2"-terpyridine

作者：Xie Hongzhen[1,2,3];Lu Guanzhong[1,2]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China;[3]Ningbo Univ, Fac Mat Sci & Chem Engn, State Key Lab Base Novel Funct Mat & Preparat Sci, Ningbo 315211, Zhejiang, Peoples R China

年份：2013

卷号：31

期号：6

起止页码：639

中文期刊名：Journal of Rare Earths

外文期刊名：JOURNAL OF RARE EARTHS

收录：CSTPCD;;EI(收录号：20140617268264);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000322379200019)】；CSCD:【CSCD2013_2014】；

基金：Foundation item: Project supported by National Basic Research Program of China (2010CB732300) and Foundation of Zhejiang Province Education Commission of China (Y201224213)

语种：英文

中文关键词：lanthanide complexes; crystal structure; luminescence property; preparation; rare earths

外文关键词：lanthanide complexes; crystal structure; luminescence property; preparation; rare earths

摘要：Five lanthanide complexes of Ln2（dpdc）2（tpy）2（NO3）2（H2O）2 [Ln=La （1）, Ce （2）, Pr （3）, Sm （4）, Gd （5）, H2dpdc=2,2’-biphenyldicarboxylic acid and tpy=2,2’：6’,2’’-terpyridine] were prepared at room temperature and characterized by X-ray diffraction, FT-IR and thermo-gravimetric analysis. The results showed that complexes 1–5 were isostructural and consisted of dinuclear units [Ln2（dpdc）2（tpy）2（NO3）（H2O）2] bridged by two dpdc2？ ligands. The dinuclear units with strong intramolecular hydrogen bonds were assembled into 2D supramolecular layers by the weak π？？？π staking interactions between pyridine rings of tpy. The TG analysis showed that the complexes 1–5 behaved higher thermal stability with no mass loss at 〈 320 °C. The lanthanide contraction effect and the solid state luminescence properties of complexes 1–5 were also investigated. The luminescence emission spectra of complexes 1–5 exhibited ligands emission bands and complex 3 and 4 had no typical emission in the visible region.
Five lanthanide complexes of Ln(2)(dpdc)(2)(tpy)(2)(NO3)(2)(H2O)(2) [Ln=La (1), Ce (2), Pr (3), Sm (4), Gd (5), H(2)dpdc=2,2'-bi-phenyldicarboxylic acid and tpy=2,2':6',2''-terpyridine] were prepared at room temperature and characterized by X-ray diffraction, FT-IR and thermo-gravimetric analysis. The results showed that complexes 1-5 were isostructural and consisted of dinuclear units [Ln(2)(dpdc)(2)(tpy)(2)(NO3)(H2O)(2)] bridged by two dpdc(2-) ligands. The dinuclear units with strong intramolecular hydrogen bonds were assembled into 2D supramolecular layers by the weak pi center dot center dot center dot pi staking interactions between pyridine rings of tpy. The TG analysis showed that the complexes 1-5 behaved higher thermal stability with no mass loss at < 320 degrees C. The lanthanide contraction effect and the solid state luminescence properties of complexes 1-5 were also investigated. The luminescence emission spectra of complexes 1-5 exhibited ligands emission bands and complex 3 and 4 had no typical emission in the visible region.