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首页> 外文期刊>Acta Crystallographica, Section B. Structural science, crystal engineering and materials >Lanthanide coordination polymers based on designed bifunctional 2-(2,2':6',2''-terpyridin-4'-yl)- benzenesulfonate ligand: syntheses, structural diversity and highly tunable emission
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Lanthanide coordination polymers based on designed bifunctional 2-(2,2':6',2''-terpyridin-4'-yl)- benzenesulfonate ligand: syntheses, structural diversity and highly tunable emission

机译：基于设计的双官能2-（2,2'：6'，2'' - Terpyridin-4'-Y1） - 苯磺酸盐配体：合成，结构多样性和高度可调发射的镧系元素配位聚合物

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摘要

Seven novel lanthanide coordination polymers, [Eu(STP)(glu)]_n (1), [Ln_4(STP)_2(glu)_5]_n·4nH_2O [Ln = Er (2), Yb (3)], [Ln(STP)(1,3-bdc)]_n·- 0.5nH_2O [Ln = Tb (4), Yb (5)], and [Ln(STP)(1,2-bdc)]_n [Ln = Eu (6), Tb (7)] [NaSTP = sodium 2-(2,2':6',2''-terpyridin-4'-yl)benzenesulfonate, H_2glu = glutaric acid, H_2(1,3-bdc) = benzene-1,3-dicarboxylic acid, H_2(1,2-bdc) = benzene-1,2-dicarboxylic acid], have been prepared under hydrothermal conditions and characterized by elemental analysis, IR and single-crystal X-ray diffraction. Compound (1) possesses a 2D layered structure based on 1D chains with STP~- and glu~(2-) anions acting as bridges. Compounds (2) and (3) are isomorphous and show a rare 3D tcj/hc net with a tetranuclear Ln~(3+) unit regarded as a seven-connected node and a glu~(2-) anion serving as a threeconnected node. Compounds (4) and (5) are isomorphous and exhibit sixconnected pcu nets by denoting binuclear units to six-connected nodes. Compounds (6) and (7) display 3D 3,5T1 nets with (1,2-bdc)~(2-) anions and dimetallic units serving as three- and five-connected nodes, respectively. The Eu compounds (1) and (6) demonstrate typically red emission, while the Tb compounds (4) and (7) exhibit characteristic green emission. The emission spectra of heteronuclear compounds [Eu_xTb_(1-x)(STP)(1,2-bdc)]_n (0 ≤ x ≤ 1) as efficient luminescent tags were investigated. The intermetallic energy transfer of Tb to Eu was also evaluated.
机译：七种新型镧系元素配位聚合物，[EU（STP）（Glu）] _ N（1），[LN_4（STP）_2（Glu）_5] _N·4NH_2O [LN = ER（2），YB（3）]，[LN （STP）（1,3-BDC）] _ n· - 0.5nH_2O [LN = TB（4），YB（5）]和[LN（STP）（1,2-BDC）] _ n [ln = eu（ 6），Tb（7）] [NASTP =钠2-（2,2'：6'，2' - Terpyridin-4'-Y1）苯磺酸盐，H_2GLU =戊二酸，H_2（1,3-BDC）=苯-1,3-二羧酸，H_2（1,2-BDC）=苯-1,2-二羧酸]已经在水热条件下制备，其特征在于元素分析，IR和单晶X射线衍射。化合物（1）具有基于1D链的2D层状结构，其具有STP〜 - 和Glu〜（2-）阴离子作用为桥梁。化合物（2）和（3）是同种晶的，并显示罕见的3D TCJ / HC网，具有四核LN〜（3+）单元被视为七连接的节点和作为ThreeConnected节点的Glu〜（2-）阴离子。化合物（4）和（5）是同性晶的，并通过表示六连接节点的双核单元表示六连接的PCU网。化合物（6）和（7）显示3D 3,5t1网，其中3D 3,5t1网与用作三个和五连接节点的二架子和二模单元。 EU化合物（1）和（6）展示通常是红色发射，而TB化合物（4）和（7）表现出特征绿色排放。研究了异核化合物的发射光谱[EU_XTB_（1-x）（STP）（1,2-BDC）] _ n（0≤x≤1）作为有效的发光标签。还评估了Tb对欧盟的金属间能量转移。

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