Auxiliary Ligands Controlled Assembly of Two Zinc Coordination Polymers: Structures, Stability and Luminescence

作者：Guo Pei-Ying; Lu, Li-Xia; Ma De-Yung; Guo Hai-Fu^*

来源：Chinese Journal of Inorganic Chemistry, 2016, 32(5): 921-927.

DOI：10.11862/CJIC.2016.104

• coordination polymers
• crystal structure
• 4,4 '-methylenedibenzoate
• luminescent

By changing the auxilary ligands, two zinc-based coordination polymers (CPs), {[Zn(DBA)(dmbpy)(0.5)]center dot 2H(2)O}(n) (1) and [Zn-2(DBA)(2)(dabco)](n) (2) (DBA=4,4'-methylenedibenzoate, dmbpy=2,2'-dimethyl-4,4'-bipyridine, dabco=triethylenediamine) have been prepared based on 4,4'-methylenedibenzoate and Zn(NO3)(2)center dot 6H(2)O under the same reaction conditions and were structurally characterized by elemental analysis, IR, TGA, powder X-ray diffraction and single-crystal X-ray diffraction. 1 is a 2D (4,4) network, and two nets interlock in parallel and give rise to a polycatenated layer (2D --> 2D). 2 is a ribbon-like infinite chain with dabco ligands point alternately up and down with respect to the chain. The results of thermal analysis indicate that 1 is quite stable up to 370 degrees C, whereas 2 shows low thermal stability. Finally, both of 1 and 2 emit the intensely blue characteristic luminescence at room temperature, with lifetimes of up to 231.4 ns and 2.33 ns, respectively. CCDC: 1450687, 1; 1450688, 2.

• 出版日期2016-5-10
• 单位肇庆学院