Syntheses, crystal structures, dye degradation and luminescence sensing properties of four coordination polymers,CrystEngComm

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Syntheses, crystal structures, dye degradation and luminescence sensing properties of four coordination polymers
CrystEngComm ( IF 2.6 ) Pub Date : 2020/02/27 , DOI: 10.1039/d0ce00175a
Ling Qin _{1,

2,

3,

4,

5} , Qing Hu _{2,

6,

7,

8} , Qi-Ming Zheng _{2,

6,

7,

8} , Yue Dou _{2,

6,

7,

8} , Hu Yang _{4,

5,

8,

9} , He-Gen Zheng _{1,

2,

3,

4,

5}

Affiliation

Four coordination polymers, namely, {[Co(cpnc)(bpbenz)]}_n (1), {[Co(cpnc)(bide)₂]}_n (2), {[Co(cpnc)(bide) (H₂O)_1/2]·H₂O}_n (3), and {[Cd(cpnc)(bib)_1/2(H₂O)₂]}_n (4) (H₂cpnc = 6-(4-carboxyphenyl)nicotinic acid, bpbenz = 1,4-bis(4-pyridyl)benzene, bide = 4,4′-bis(imidazolyl)diphenyl ether, and bib = 1,4-bis(1-imidazoly)benzene) have been solvothermally synthesized and characterized by powder X-ray diffraction, elemental analysis, and infrared spectroscopy. Structural analysis reveals that compound 1 consists of a 3D 3-fold interpenetrated framework with pcu topology. Compounds 2 and 3 have been synthesized by one-pot reactions. Compound 2 comprises 2D layers, while compound 3 comprises 1D chains. Compound 4 consists of 2D layers constructed from mixed ligands. In addition, the photocatalytic activities of 1–3 under UV light toward methyl orange (MO), rhodamine B (RB), methyl blue (MB), neutral red (NR), methylene blue (MEB), and safranine T (ST) with H₂O₂ are investigated in aqueous solutions. The results suggested that the photocatalytic efficiency of 1 for MO was 100% in one hour and that of 2 for ST was 90% in two hours; furthermore, the photocatalytic efficiencies of 3 for MO and ST were found to be 100% and 92% in one hour, respectively. The photoluminescence titration experiments demonstrate that 4 is an excellent multifunctional probe for metal ions (Fe³⁺ and Cu²⁺) and anions (Cr₂O₇²⁻ and CO₃²⁻).

中文翻译：

四种配位聚合物的合成，晶体结构，染料降解和发光传感性能

四种配位聚合物，即{[Co（cpnc）（bpbenz）]} _n（1），{[Co（cpnc）（bide）₂ ]} _n（2），{[Co（cpnc）（bide）（H）₂ O）_1/2 ]·H ₂ O} _n（3）和{[Cd（cpnc）（bib）_1/2（H ₂ O）₂ ]} _n（4）（H ₂cpnc = 6-（4-羧基苯基）烟酸，bpbenz = 1,4-双（4-吡啶基）苯，bide = 4,4'-双（咪唑基）二苯醚，bib = 1,4-bis（1 -咪唑基苯）已通过溶剂热合成并通过粉末X射线衍射，元素分析和红外光谱进行了表征。结构分析表明，化合物1由具有pcu拓扑结构的3D 3倍互穿框架组成。化合物2和3已经通过一锅法合成。化合物2包含2D层，而化合物3包含1D链。化合物4由混合配体构成的2D层组成。此外，1-3的光催化活性在紫外光下，在水溶液中研究甲基罗丹明B（RB），若丹明B（RB），甲基蓝（MB），中性红（NR），亚甲基蓝（MEB）和藏红花T（ST）与H ₂ O _2的关系。结果表明，MO对1的光催化效率在1小时内为100％，ST对2的光催化效率在2小时内为90％。此外，光催化效率3被发现的MO和ST为100％和92％在一小时内，分别。光致发光滴定实验表明4是用于金属离子（Fe ³⁺和Cu ²⁺）和阴离子（Cr ₂ O ₇）的出色多功能探针²⁻和CO₃²⁻）。

更新日期：2020-03-30

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