Fluorinated Metal–Organic Frameworks: Advantageous for Higher H2 and CO2 Adsorption or Not?

Authors

  • Pradip Pachfule,

    1. Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008 (India), Fax: (+91) 20-25902636
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  • Yifei Chen,

    1. Department of Chemical and Biomolecular Engineering, National University of Singapore, 117576 Singapore (Singapore)
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  • Dr. Jianwen Jiang,

    1. Department of Chemical and Biomolecular Engineering, National University of Singapore, 117576 Singapore (Singapore)
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  • Dr. Rahul Banerjee

    Corresponding author
    1. Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008 (India), Fax: (+91) 20-25902636
    • Physical/Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008 (India), Fax: (+91) 20-25902636
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Abstract

The synthesis, structure, and gas adsorption properties of three new metal–organic frameworks (MOFs) designed from isonicotinic acid (INA) and its fluorinated analogue 3-fluoroisonicotinic acid (FINA) along with CoII as the metal center have been reported. Co-INA-1 ([Co3(INA)4(O)(C2H5OH)3][NO3]C2H5OH3 H2O; INA=isonicotinic acid) and Co-INA-2 ([Co(INA)2]DMF) are structural isomers as are Co-FINA-1 ([Co3(FINA)4(O)(C2H5OH)2]H2O; FINA=3-fluoroisonicotinic acid) and Co-FINA-2 ([Co(FINA)2]H2O), but the most important thing to note here is that Co-INA-1 and Co-FINA-1 are isostructural as are Co-INA-2 and Co-FINA-2. The effect of partial introduction of fluorine atoms into the framework on the gas uptake properties of MOFs having similar structures has been analyzed experimentally and computationally in isostructural MOFs.

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