Synthesis, crystal structure and luminescence properties of lanthanide coordination polymers with a new semirigid bridging thenylsalicylamide ligand

Synthesis, crystal structure and luminescence properties of lanthanide coordination polymers with a new semirigid bridging thenylsalicylamide ligand
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新型半刚性桥联乙烯基水杨酰胺配体的镧系配位聚合物的合成、晶体结构和发光性能

DOI:
10.1016/j.jssc.2013.07.014
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发表时间:
2013-09
影响因子:
3.3
通讯作者:
Cheng, Guo-Quan
Cheng, Guo-Quan
中科院分区:
化学3区
文献类型:
--
作者:
Zhao, Meng-Meng;Wang, Xiao-Run;Peng, Yun-Qiao;Cheng, Guo-Quan

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合成了两种基于半刚性桥联噻吩基水杨酰胺配体{[Ln_2L_3(NO_3)_6]·(C_4H_8O_2)_2}~ ∞的稀土配位聚合物,通过元素分析、X射线衍射、红外光谱和热重分析对其结构进行了表征。这两个化合物是同构的,具有一维梯形链,由孤立的LnO_3(NO_3)_3多面体(扭曲的单帽反方棱柱)通过配体连接而成。光致发光分析表明,配合物中存在有效的配体-Ln(III)能量转移,配体是Tb(III)的有效“天线”。从更一般的角度来看,本文所展示的结果提供了控制所需镧系元素配位结构的形成以丰富晶体工程策略并扩大用于开发优异发光镧系元素配位聚合物的武库的可能性。
Two new lanthanide coordination polymers based on a semirigid bridging thenylsalicylamide ligand {[Ln2L3(NO3)6]·(C4H8O2)2}∞were obtained and characterized by elemental analysis, X-ray diffraction, IR and TGA measurements. The two compounds are isostructure and possess one dimensional trapezoid ladder-like chain built up from the connection of isolated LnO3(NO3)3polyhedra (distorted monocapped antisquare prism) through the ligand. The photoluminescence analysis suggest that there is an efficient ligand-to-Ln(III) energy transfer in Tb(III) complex and the ligand is an efficient “antenna” for Tb(III). From a more general perspective, the results demonstrated herein provide the possibility of controlling the formation of the desired lanthanide coordination structure to enrich the crystal engineering strategy and enlarge the arsenal for developing excellent luminescent lanthanide coordination polymers.
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