Effect of heavy-atom (Br) at the phenyl rings of Schiff-base ligands on the NIR luminescence of their bimetallic Zn-Nd complexes

被引：39
作者：
Bi, Wei-Yu [1 ]
Lue, Xing-Qiang [1 ,2 ]
Chai, Wen-Li [1 ]
Song, Ji-Rong [1 ]
Wong, Wai-Kwok [2 ]
Yang, Xiao-Ping [3 ]
Jones, Richard A. [3 ]
机构：
[1] NW Univ Xian, Sch Chem Engn, Shaanxi Key Lab Physicoinorgan Chem, Xian 710069, Peoples R China
[2] Hong Kong Baptist Univ, Dept Chem, Hong Kong, Hong Kong, Peoples R China
[3] Univ Texas Austin, Dept Chem & Biochem, Austin, TX 78712 USA
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2008年 / 634卷 / 10期
关键词：
zine; neodymium; heterobimetallic Zn-Nd Schiff-base complexes; NIR luminescent property; heavy-atom effect;
D O I：
10.1002/zaac.200800137
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Two heterobimetallic Zn-Nd phenylene-bridged Schiff-base ligands complexes [ZnNdL1(Py)(NO3)(3)] (1) and [(ZnLNd)-Nd-2(Py)(NO3)(3)] center dot MeCN (2) (Py = pyridine, H2L1 = N,N'-bis(3-methoxy-salicylidene)phenylene-1,2-diamine, H2L2 = N,N'-bis-5-bromo-3-methoxy-salicylidene)phenylene-1,2-diamine) were obtained. Both 1 and 2 were structurally characterized by X-ray crystallography, and their near-infrared (NIR) luminescent properties were determined. For the two complexes, the occupation of pyridine at the axial position of 3d Zn2+ ions could effectively prevent luminescent quenching arising from OH-, NH- or CH oscillators of the solvates around the 4f Nd3+ ions, and the heavy-atom (Br) effect of the Schiff-base ligands on their NIR luminescent properties is also discussed.
引用
收藏
页码：1795 / 1800
页数：6
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