Luminescent mononuclear Eu(III) and Tb(III) complexes with bipyridyl-tetrazolate tridentate ligands
作者:Jing-Lin Chen、Yan-Sheng Luo、Guo-Ping Gao、Jia-Li Zhao、Lu Qiu、Na Liu、Li-Hua He、Sui-Jun Liu、He-Rui Wen
DOI:10.1016/j.poly.2016.06.019
日期:2016.10
A new series of four luminescent mononuclear Eu(III) and Tb(III) complexes with bipyridyl tetrazolate tridentate chelates, [Ln(tbpy) 2 (DMF)(H 2 O) 2 ](NO 3 ) and [Ln(tmbpy) 2 (DMF)(NO 3 )] (Ln = Eu(III) and Tb(III), DMF = N,N-dimethylformamide, tbpy and tmbpy denote the deprotonated 6-(1 H -tetrazole-5-yl)-2,2′-bipyridine and 6-(1 H -tetrazole-5-yl)-4,4′-dimethyl-2,2′-bipyridine, respectively), have
新系列的四个发光单核Eu(III)和Tb(III)配合物与双吡啶基四唑酸酯三齿螯合物[Ln(tbpy)2(DMF)(H 2 O)2](NO 3)和[Ln(tmbpy)2 (DMF)(NO 3)](Ln = Eu(III)和Tb(III),DMF = N,N-二甲基甲酰胺,tbpy和tmbpy表示去质子化的6-(1 H-四唑-5-基)-2,合成并表征了2'-联吡啶和6-(1 H-四唑-5-基)-4,4'-二甲基-2,2'-联吡啶。每个Ln(III)离子显示一个扭曲的三棱柱三棱柱,带有两个单阴离子三齿螯合配体,源自四唑基环的NH去质子化,并且在2,2'-联吡啶基环中引入了两个甲基这对Ln(III)核的配位环境产生了重大影响,表明两个配位的水分子被一个螯合的硝酸根阴离子取代。两种Ln(III)配合物在室温下均以溶液和固态发射。结果表明,在2,2'-联吡啶基环中引入两个供电子甲基对Ln(III)配