Zhang Li-Qing, Wang Xiu-Wen, Gu Lei, Yu Ying-Hui, Gao Jin-Sheng
School of Chemistry and Materials Science, Heilongjiang University Harbin 150080 China
Agricultural College, Heilongjiang University Harbin 150080 China.
RSC Adv. 2020 Mar 4;10(16):9476-9485. doi: 10.1039/d0ra00329h. eCollection 2020 Mar 2.
Three couples of coordination polymers (CPs), namely, [Co((/)-Hcna)] (1-D/L), [Cd((1,2/1,2)-cpba)(phen)(HO)] (2-D/L) and [Cd((1,2/1,2)-Hcpba)(phen)] (3-D/L) {(/)-Hcna = (/)-6-(1-carboxyethoxy)-2-naphthoic acid, (1,2/1,2)-Hcpba = (1,2/1,2)-2,2'-((5-carboxy-1,3-phenylene)bis(oxy))dipropionic acid, phen = 1,10-phenanthroline} are successfully synthesized under hydrothermal conditions. Structural analysis shows that CP 1 has a 3D 3,6-c net structure with a point symbol of (4·6)(4·6·8). CPs 2 and 3 are obtained under very similar reaction conditions except using different solvent ratios. The presence of the planar chelating ligand phen in CPs 2 and 3 limited the spatial growth of the structure, resulting in the formation of different 1D structures. All CPs crystallized in the chiral space group 2, CPs 1-3 are all SHG active. Their luminescence sensing activities for organics such as antibiotics, pesticides and nitro aromatics are also investigated. The results showed that CP 1 can effectively identify trace amounts of nitrofurans (NFs) and CP 3 has obvious recognition ability toward nitrofurans (NFs) and nitroimidazoles (NMs). Both CPs 1 and 3 could selectively detect 2,6-dichloro-4-nitroaniline (DCN). The luminescence of CPs 1 and 3 can also be quenched by (D/L)-4-nitrophenylalanine ((D/L)-NPA) and (1,2/1,2)-2-amino-1-(4-nitrophenyl)propane-1,3-diol ((1,2/1,2)-ANPO).
成功在水热条件下合成了三对配位聚合物（CPs），即[Co((/)-Hcna)] (1-D/L)、[Cd((1,2/1,2)-cpba)(phen)(HO)] (2-D/L) 和 [Cd((1,2/1,2)-Hcpba)(phen)] (3-D/L) {(/)-Hcna = (/)-6-(1-羧基乙氧基)-2-萘甲酸，(1,2/1,2)-Hcpba = (1,2/1,2)-2,2'-((5-羧基-1,3-亚苯基)双(氧基))二丙酸，phen = 1,10-菲咯啉}。结构分析表明，CP 1具有三维3,6-c网状结构，点符号为(4·6)(4·6·8)。CP 2和CP 3是在非常相似的反应条件下获得的，只是使用了不同的溶剂比例。CP 2和CP 3中平面螯合配体phen的存在限制了结构的空间生长，导致形成了不同的一维结构。所有CPs在手性空间群2中结晶，CP 1 - 3均具有SHG活性。还研究了它们对抗生素、农药和硝基芳烃等有机物的发光传感活性。结果表明，CP 1能有效识别痕量硝基呋喃（NFs），CP 3对硝基呋喃（NFs）和硝基咪唑（NMs）具有明显的识别能力。CP 1和CP 3都能选择性地检测2,6-二氯-4-硝基苯胺（DCN）。CP 1和CP 3的发光也能被(D/L)-4-硝基苯丙氨酸((D/L)-NPA)和(1,2/1,2)-2-氨基-1-(4-硝基苯基)丙烷-1,3-二醇((1,2/1,2)-ANPO)淬灭。
