Synthesis and Defect Characterization of Phase-Pure Zr-MOFs Based on Meso-tetracarboxyphenylporphyrin
| Autor: | James Alatis, Jie Zhu, Shaunak M. Shaikh, Pavel M. Usov, Meng Cai, Amanda J. Morris |
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| Rok vydání: | 2019 |
| Předmět: |
Diffraction
Zirconium Thermogravimetric analysis 010405 organic chemistry Scanning electron microscope chemistry.chemical_element Sorption 010402 general chemistry 01 natural sciences Porphyrin 0104 chemical sciences Characterization (materials science) Inorganic Chemistry chemistry.chemical_compound chemistry Chemical engineering Phase (matter) Physical and Theoretical Chemistry |
| Zdroj: | Inorganic Chemistry. 58:5145-5153 |
| ISSN: | 1520-510X 0020-1669 |
| DOI: | 10.1021/acs.inorgchem.9b00200 |
| Popis: | The reaction of zirconium salts with meso-tetra(4-carboxyphenyl)porphyrin (TCPP) in the presence of different modulators results in the formation of a diverse set of metal–organic frameworks (MOFs), each displaying distinct crystalline topologies. However, the synthesis of phase-pure crystalline frameworks remains challenging due to the concurrent formation of different polymorphs. The acidity and concentration of the modulator greatly influence the outcome of the MOF synthesis. By systematically varying these two parameters, selective framework formation can be achieved. In the present study, we aimed to elucidate the effect of modulator on the synthesis of zirconium-based TCPP MOFs. With the help of powder X-ray diffraction and scanning electron microscopy, modulator candidates and the optimal synthetic conditions yielding phase-pure PCN-222, PCN-223, and MOF-525 were identified. 1H nuclear magnetic resonance analysis, thermogravimetric analysis, and N2 gas sorption measurements were performed on select... |
| Databáze: | OpenAIRE |
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