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在水热条件下,合成了6个新的镧系金属配位聚合物,Ln2(SSA)2(phen)4(H2O)2(Ln=Er(Ⅲ)(1),Yb(Ⅲ)(2)),[La2(SSA)2(phen)2(H2O)4·(phen)·(H2O)1.33]n(3)和[Ln(SSA)(bpdo)0.5(H2O)·(H2O)]n(Ln=Nd(Ⅲ)(4),Sm(Ⅲ)(5),Eu(Ⅲ)(6),SSA=5-磺基水杨酸,phen=邻二氮杂菲,bpdo=4,4′-联吡啶氮氧化物),并测定了它们的结构。化合物1和2都具有蝶状双核中心,这个双核中心进一步通过氢键和π-π相互作用形成三维骨架。化合物3在a方向形成一维梯状链,而氢键和π-π堆积作用在这一结构的形成中起着重要作用。化合物4～6由相互穿插的单螺旋链形成三维骨架结构。此外,对这6个化合物进行了热稳定性和荧光性质的研究。固态化合物3受激下,发射较强的蓝色荧光。
Under hydrothermal conditions, six novel Lanthanide metal coordination polymers were synthesized. The Ln2 (phenylene) 4 (H2O) 2 (Ln = Er (Ⅲ) ), [La2 (SSA) 2 (phen) 2 (H2O) 4 · (phen) · (H2O) 1.33] n (3) and [Ln (SSA) (Ln = Nd (Ⅲ) (4) Sm (Ⅲ) (5) Eu (Ⅲ) (6) SSA = 5-sulfosalicylic acid phen = phenanthroline bpdo = 4,4 ’- bipyridine nitrogen oxides), and their structure was determined. Both compounds 1 and 2 have a butterfly-like dinuclear center, which further forms a three-dimensional framework by hydrogen bonding and π-π interactions. Compound 3 forms a one-dimensional ladder in the a-direction, and hydrogen bonding and π-π stacking play an important role in the formation of this structure. Compounds 4 to 6 form a three-dimensional framework structure by interpenetrating single helical chains. In addition, the thermal stability and fluorescence properties of these six compounds were studied. Upon excitation, solid state compound 3 emits a strong blue fluorescence.