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基于四唑配体的三维和二维锌基金属有机框架的pH值控制组装

pH-Controlled Assembly of 3D and 2D Zinc-Based Metal-Organic Frameworks with Tetrazole Ligands.

作者信息

Chi-Durán Ignacio, Enríquez Javier, Manquian Carolina, Wrighton-Araneda Kerry, Cañon-Mancisidor Walter, Venegas-Yazigi Diego, Herrera Felipe, Singh Dinesh Pratap

机构信息

Department of Physics, Universidad de Santiago de Chile, Avenida Ecuador 3493, Estación Central, 9170124 Santiago, Chile.

Departamento de Química de los Materiales, Facultad de Química y Biología, Avenida Libertador Bernardo O'Higgins 3363, Estación Central, 9170022 Santiago, Chile.

出版信息

ACS Omega. 2018 Jan 22;3(1):801-807. doi: 10.1021/acsomega.7b01792. eCollection 2018 Jan 31.

DOI:10.1021/acsomega.7b01792
PMID:31457930
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6641251/
Abstract

We report the synthesis and structural diversity of Zn(II) metal-organic framework (MOF) with in situ formation of tetrazole ligand [ = 5-(3-pyridyl)tetrazolate] as a function pH. By varying the initial reaction pH, we obtain high-quality crystals of the noncentrosymmetric three-dimensional MOF , mixed phases involving the zinc-aqua complex [Zn(HO)(3-ptz)]·4HO, and two-dimensional MOF crystals Zn(OH)(3-ptz) with a tunable microrod morphology, keeping reaction time, temperature, and metal-ligand molar ratio constant. Structures are characterized by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, and UV-vis spectroscopy. We discuss the observed structural diversity in terms of the relative abundance of hydroxo-zinc species in solution for different values of pH.

摘要

我们报道了具有原位形成四唑配体[ = 5-(3-吡啶基)四唑酸盐]的Zn(II)金属有机框架（MOF）的合成及其结构多样性与pH值的关系。通过改变初始反应pH值，我们获得了非中心对称三维MOF 的高质量晶体、包含锌水络合物[Zn(HO)(3-ptz)]·4HO的混合相以及具有可调微棒形态的二维MOF晶体Zn(OH)(3-ptz)，同时保持反应时间、温度和金属-配体摩尔比恒定。通过X射线衍射、扫描电子显微镜、傅里叶变换红外光谱和紫外-可见光谱对结构进行了表征。我们根据不同pH值下溶液中羟基锌物种的相对丰度讨论了观察到的结构多样性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/0ad4ae438548/ao-2017-01792b_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/9e189e62e7b5/ao-2017-01792b_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/fa02f0d0fdb3/ao-2017-01792b_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/e0961890665b/ao-2017-01792b_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/d1234664ff9b/ao-2017-01792b_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/414af7afe8ca/ao-2017-01792b_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/85a02d0ac95f/ao-2017-01792b_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/0ad4ae438548/ao-2017-01792b_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/9e189e62e7b5/ao-2017-01792b_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/fa02f0d0fdb3/ao-2017-01792b_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/e0961890665b/ao-2017-01792b_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/d1234664ff9b/ao-2017-01792b_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/414af7afe8ca/ao-2017-01792b_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/85a02d0ac95f/ao-2017-01792b_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/16e9/6641251/0ad4ae438548/ao-2017-01792b_0007.jpg

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