Mapping Solvation Environments in Porous Metal-Organic Frameworks with Infrared Chemical Imaging

Ayanjeet Ghosh, Prabuddha Mukherjee, Sanghamitra Deb, Rohit Bhargava

Research output: Contribution to journalArticle

Abstract

We report here the first mesoscale characterization of solvent environments in the metal-organic framework (MOF) Cu3(BTC)2 using infrared imaging. Two characteristic populations of the MOF structures corresponding to the carboxylate binding to the Cu(II) (metal) ions were observed, which reflect a regular solvated MOF structure with axial solvents in the binuclear copper paddlewheel and an unsolvated defect mode that lacks axial solvent coordination. Infrared imaging also shows strong correlation between solvent localization and the spatial distribution of the solvated population within the MOF. This is a vital result as any remnant solvent molecules adsorbed inside of MOFs can render them less effective. We propose fast IR imaging as a potential characterization technique that can measure adsorbate and defect distributions in MOFs.

Original languageEnglish (US)
Pages (from-to)5325-5330
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume8
Issue number21
DOIs
StatePublished - Nov 2 2017

Fingerprint

Solvation
solvation
Metals
Infrared radiation
Imaging techniques
Infrared imaging
metals
Defects
defects
Adsorbates
Spatial distribution
carboxylates
Metal ions
Copper
metal ions
spatial distribution
copper
Molecules
molecules

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Mapping Solvation Environments in Porous Metal-Organic Frameworks with Infrared Chemical Imaging. / Ghosh, Ayanjeet; Mukherjee, Prabuddha; Deb, Sanghamitra; Bhargava, Rohit.

In: Journal of Physical Chemistry Letters, Vol. 8, No. 21, 02.11.2017, p. 5325-5330.

Research output: Contribution to journalArticle

Ghosh, Ayanjeet ; Mukherjee, Prabuddha ; Deb, Sanghamitra ; Bhargava, Rohit. / Mapping Solvation Environments in Porous Metal-Organic Frameworks with Infrared Chemical Imaging. In: Journal of Physical Chemistry Letters. 2017 ; Vol. 8, No. 21. pp. 5325-5330.
@article{0d61a21dddfc4a9b98b377a158800bf5,
title = "Mapping Solvation Environments in Porous Metal-Organic Frameworks with Infrared Chemical Imaging",
abstract = "We report here the first mesoscale characterization of solvent environments in the metal-organic framework (MOF) Cu3(BTC)2 using infrared imaging. Two characteristic populations of the MOF structures corresponding to the carboxylate binding to the Cu(II) (metal) ions were observed, which reflect a regular solvated MOF structure with axial solvents in the binuclear copper paddlewheel and an unsolvated defect mode that lacks axial solvent coordination. Infrared imaging also shows strong correlation between solvent localization and the spatial distribution of the solvated population within the MOF. This is a vital result as any remnant solvent molecules adsorbed inside of MOFs can render them less effective. We propose fast IR imaging as a potential characterization technique that can measure adsorbate and defect distributions in MOFs.",
author = "Ayanjeet Ghosh and Prabuddha Mukherjee and Sanghamitra Deb and Rohit Bhargava",
year = "2017",
month = "11",
day = "2",
doi = "10.1021/acs.jpclett.7b02104",
language = "English (US)",
volume = "8",
pages = "5325--5330",
journal = "Journal of Physical Chemistry Letters",
issn = "1948-7185",
publisher = "American Chemical Society",
number = "21",

}

TY - JOUR

T1 - Mapping Solvation Environments in Porous Metal-Organic Frameworks with Infrared Chemical Imaging

AU - Ghosh, Ayanjeet

AU - Mukherjee, Prabuddha

AU - Deb, Sanghamitra

AU - Bhargava, Rohit

PY - 2017/11/2

Y1 - 2017/11/2

N2 - We report here the first mesoscale characterization of solvent environments in the metal-organic framework (MOF) Cu3(BTC)2 using infrared imaging. Two characteristic populations of the MOF structures corresponding to the carboxylate binding to the Cu(II) (metal) ions were observed, which reflect a regular solvated MOF structure with axial solvents in the binuclear copper paddlewheel and an unsolvated defect mode that lacks axial solvent coordination. Infrared imaging also shows strong correlation between solvent localization and the spatial distribution of the solvated population within the MOF. This is a vital result as any remnant solvent molecules adsorbed inside of MOFs can render them less effective. We propose fast IR imaging as a potential characterization technique that can measure adsorbate and defect distributions in MOFs.

AB - We report here the first mesoscale characterization of solvent environments in the metal-organic framework (MOF) Cu3(BTC)2 using infrared imaging. Two characteristic populations of the MOF structures corresponding to the carboxylate binding to the Cu(II) (metal) ions were observed, which reflect a regular solvated MOF structure with axial solvents in the binuclear copper paddlewheel and an unsolvated defect mode that lacks axial solvent coordination. Infrared imaging also shows strong correlation between solvent localization and the spatial distribution of the solvated population within the MOF. This is a vital result as any remnant solvent molecules adsorbed inside of MOFs can render them less effective. We propose fast IR imaging as a potential characterization technique that can measure adsorbate and defect distributions in MOFs.

UR - http://www.scopus.com/inward/record.url?scp=85032786493&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85032786493&partnerID=8YFLogxK

U2 - 10.1021/acs.jpclett.7b02104

DO - 10.1021/acs.jpclett.7b02104

M3 - Article

AN - SCOPUS:85032786493

VL - 8

SP - 5325

EP - 5330

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

SN - 1948-7185

IS - 21

ER -