Zn-MOFs Containing Pyridine and Bipyridine Carboxylate Organic Linkers and Open Zn2+ Sites

Jongsik Kim; Allen G. Oliver; Gregory T. Neumann; Jason C. Hicks

doi:10.1002/ejic.201500245

Zn-MOFs Containing Pyridine and Bipyridine Carboxylate Organic Linkers and Open Zn²⁺ Sites

Jongsik Kim
, Allen G. Oliver
, Gregory T. Neumann
, Jason C. Hicks

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

Two Zn-based metal-organic frameworks (Zn-MOFs) were solvothermally synthesized using two pyridine-based carboxylate linkers to generate unique pore topologies, as evidenced by single-crystal XRD analysis. These Zn-MOFs provided coordinatively unsaturated Zn²⁺ sites with square-pyramidal geometry, leading to an enhanced interaction with CO₂, as demonstrated by sub-atmospheric pressure isotherms. The presence of open Zn²⁺ sites in these MOFs was validated by Raman spectroscopy under atmospheric CO₂, revealing the presence of CO₂ chemisorbed on surface sites. Additionally, in situ DRIFT spectra of chemisorbed acetic acid provided evidence for the formation of acetate-Zn²⁺ species after adsorption compared to IRMOF-1, which showed only physisorbed acetic acid species.

Original language	English
Pages (from-to)	3011-3018
Number of pages	8
Journal	European Journal of Inorganic Chemistry
Volume	2015
Issue number	18
DOIs	https://doi.org/10.1002/ejic.201500245
Publication status	Published - 1 Jun 2015

Bibliographical note

Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords

Adsorption
Carbon dioxide fixation
Functional materials
Metal-organic frameworks
Organic-inorganic hybrid composites
Zinc

Access to Document

10.1002/ejic.201500245

Cite this

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title = "Zn-MOFs Containing Pyridine and Bipyridine Carboxylate Organic Linkers and Open Zn2+ Sites",

abstract = "Two Zn-based metal-organic frameworks (Zn-MOFs) were solvothermally synthesized using two pyridine-based carboxylate linkers to generate unique pore topologies, as evidenced by single-crystal XRD analysis. These Zn-MOFs provided coordinatively unsaturated Zn2+ sites with square-pyramidal geometry, leading to an enhanced interaction with CO2, as demonstrated by sub-atmospheric pressure isotherms. The presence of open Zn2+ sites in these MOFs was validated by Raman spectroscopy under atmospheric CO2, revealing the presence of CO2 chemisorbed on surface sites. Additionally, in situ DRIFT spectra of chemisorbed acetic acid provided evidence for the formation of acetate-Zn2+ species after adsorption compared to IRMOF-1, which showed only physisorbed acetic acid species.",

keywords = "Adsorption, Carbon dioxide fixation, Functional materials, Metal-organic frameworks, Organic-inorganic hybrid composites, Zinc",

author = "Jongsik Kim and Oliver, \{Allen G.\} and Neumann, \{Gregory T.\} and Hicks, \{Jason C.\}",

note = "Publisher Copyright: {\textcopyright} 2015 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim.",

year = "2015",

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doi = "10.1002/ejic.201500245",

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T1 - Zn-MOFs Containing Pyridine and Bipyridine Carboxylate Organic Linkers and Open Zn2+ Sites

AU - Kim, Jongsik

AU - Oliver, Allen G.

AU - Neumann, Gregory T.

AU - Hicks, Jason C.

PY - 2015/6/1

Y1 - 2015/6/1

N2 - Two Zn-based metal-organic frameworks (Zn-MOFs) were solvothermally synthesized using two pyridine-based carboxylate linkers to generate unique pore topologies, as evidenced by single-crystal XRD analysis. These Zn-MOFs provided coordinatively unsaturated Zn2+ sites with square-pyramidal geometry, leading to an enhanced interaction with CO2, as demonstrated by sub-atmospheric pressure isotherms. The presence of open Zn2+ sites in these MOFs was validated by Raman spectroscopy under atmospheric CO2, revealing the presence of CO2 chemisorbed on surface sites. Additionally, in situ DRIFT spectra of chemisorbed acetic acid provided evidence for the formation of acetate-Zn2+ species after adsorption compared to IRMOF-1, which showed only physisorbed acetic acid species.

AB - Two Zn-based metal-organic frameworks (Zn-MOFs) were solvothermally synthesized using two pyridine-based carboxylate linkers to generate unique pore topologies, as evidenced by single-crystal XRD analysis. These Zn-MOFs provided coordinatively unsaturated Zn2+ sites with square-pyramidal geometry, leading to an enhanced interaction with CO2, as demonstrated by sub-atmospheric pressure isotherms. The presence of open Zn2+ sites in these MOFs was validated by Raman spectroscopy under atmospheric CO2, revealing the presence of CO2 chemisorbed on surface sites. Additionally, in situ DRIFT spectra of chemisorbed acetic acid provided evidence for the formation of acetate-Zn2+ species after adsorption compared to IRMOF-1, which showed only physisorbed acetic acid species.

KW - Adsorption

KW - Carbon dioxide fixation

KW - Functional materials

KW - Metal-organic frameworks

KW - Organic-inorganic hybrid composites

KW - Zinc

UR - https://www.scopus.com/pages/publications/85027932107

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DO - 10.1002/ejic.201500245

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JO - European Journal of Inorganic Chemistry

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