Insight into the roles of structures and energy levels of mono- and bis-β-diketones on sensitizing Nd(<scp>iii</scp>) NIR-luminescence
作者:Bing Li、Hongfeng Li、Peng Chen、Wenbin Sun、Cheng Wang、Ting Gao、Pengfei Yan
DOI:10.1039/c6dt01609j
日期:——
Three neodymium complexes Nd(TTA)3(DMSO)2 (1, TTA = 2-thenoyltrifluoroacetone), Nd2(BDT)3(DMSO)6 (2, BDT = bis(4,4,4-trifluoro-1,3-dioxobutyl)thiophene) and Nd2(BTT)3(DMSO)4 (3, BTT = bis(4,4,4-trifluoro-1,3-dioxobutyl)(2,2′-bithiophene)) constructed from three thiophene-based β-diketonate ligands, were prepared for the purpose of building the relationships between the structures, energy levels of the
三种钕配合物Nd(TTA)3(DMSO)2(1,TTA = 2-thenoyltrifluoroacetone),Nd 2(BDT)3(DMSO)6(2,BDT = bis(4,4,4-trifluoro-1,3 -二氧代丁基)噻吩)和Nd 2(BTT)3(DMSO)4(3,BTT =由三个噻吩构成的双(4,4,4-三氟-1,3-二氧代丁基)(2,2'-联噻吩))为了建立Nd(III)离子的结构,络合物的能级和NIR发光特性之间的关系,制备了基于β-二酮的β-二酮基配体。X射线晶体学分析表明该复合物1是一个单核结构,中心的Nd(III)离子由来自三个单-β-二酮(TTA)和两个DMSO的八个氧原子配位,而配合物2和3采用三链双核结构,其中两个Nd (III)离子被三个bis-β-二酮包裹,中心是Nd(III离子是由配体和配位的DMSO分子中的氧原子配位的9和8个离子。通过吸收光谱,激发光谱