A two-fold interpenetrated zinc–organic framework: luminescence detection of CrO42−/Cr2O72− and chemical conversion of CO2†,CrystEngComm

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A two-fold interpenetrated zinc–organic framework: luminescence detection of CrO42−/Cr2O72− and chemical conversion of CO2†
CrystEngComm ( IF 2.6 ) Pub Date : 2018-06-22 00:00:00 , DOI: 10.1039/c8ce00673c
Ying Shi _{1,

2,

3,

4,

5} , Tian-Qun Song _{1,

2,

3,

4,

5} , Chun-Shuai Cao _{1,

2,

3,

4,

5} , Bin Zhao _{1,

2,

3,

4,

5}

Affiliation

A novel two-fold interpenetrated 3D metal–organic framework {[Zn(DCTP)]·4.2H₂O}_n (1) (H₂DCTP = 4′-(3,5-dicarboxyphenyl)-4,2′:6′,4′′-terpyridine) was synthesized from a pyridine–carboxylic ligand and Zn(OAc)₂ under solvothermal conditions. Along the a-axis, a large pore exists in 1 with a size of 12.5 × 14.7 Å, and after removing solvent molecules, the porosity is 22.4%. Thermogravimetric analysis (TGA) and powder X-ray diffraction (PXRD) show that 1 has high thermal, pH, and solvent stability. Importantly, 1 is able to significantly capture CO₂ at up to 67 cm³ g⁻¹ at 273 K. Furthermore, 1 can effectively catalyze the cycloaddition reaction of CO₂ with epoxides, and it can be recycled at least five times without a change in catalytic efficiency. Additionally, 1 can serve as a sensitive and recyclable luminescent probe to detect CrO₄²⁻/Cr₂O₇²⁻, and the detection limit can reach 1 × 10⁻⁶ M and 1.5 × 10⁻⁶ M, respectively.

中文翻译：

两倍互穿锌-有机骨架：氧化铬的发光检测₄^2- / Cr的₂ ö ₇^2-和CO的化学转化₂†

一种新型的互穿互穿的3D金属-有机骨架{[Zn（DCTP）]·4.2H ₂ O} _n（1）（H ₂ DCTP = 4'-（3,5-二羧基苯基）-4,2'：6 '，4''-吡啶）是在溶剂热条件下由吡啶-羧基配体和Zn（OAc）₂合成的。沿a轴，在1中存在一个大孔，尺寸为12.5×14.7Å，除去溶剂分子后，孔隙率为22.4％。热重分析（TGA）和粉末X射线衍射（PXRD）表明1具有很高的热，pH和溶剂稳定性。重要的是，1能够最大捕获67 cm ^3的CO ₂g ^-1在273K。此外，1可以有效地催化CO ₂与环氧化物的环加成反应，并且可以循环至少五次而不会改变催化效率。另外，1可以用作检测CrO ₄^2- / Cr ₂ O ₇^2-的灵敏且可回收的发光探针，并且检测极限分别可以达到1×10 ^-6 M和1.5×10 ^-6M。

更新日期：2018-06-22

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