Backbonding contributions to small molecule chemisorption in a metal–organic framework with open copper(i) centers

In situ near edge X-ray absorption fine structure spectroscopy directly probes unoccupied states associated with backbonding interactions between the open metal site in a metal–organic framework and various small molecule guests.

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Kinetic analysis of Ag particle redispersion into ZSM-5 in the presence of coke using in situ XAFS

Catalysis Science & Technology ◽

10.1039/d0cy01989e ◽

2021 ◽

Author(s):

Kazumasa Murata ◽

Junya Ohyama ◽

Atsushi Satsuma

Keyword(s):

Fine Structure ◽

Kinetic Analysis ◽

X Ray ◽

Xafs Spectroscopy ◽

Absorption Fine ◽

Ag Particles ◽

In Situ Xafs ◽

Ag Particle ◽

X Ray Absorption

In the present study, the redispersion behavior of Ag particles on ZSM-5 in the presence of coke was observed using in situ X-ray absorption fine structure (XAFS) spectroscopy.

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Electronic Structures of Crystalline and Aqueous Solutions of LiBr, NaBr, KBr, and KBrO3: In Situ Br L-Edge Near-edge X-ray Absorption Fine Structure

The Journal of Physical Chemistry B ◽

10.1021/jp0304327 ◽

2003 ◽

Vol 107 (46) ◽

pp. 12562-12565 ◽

Cited By ~ 5

Author(s):

Shuji Matsuo ◽

Ponnusamy Nachimuthu ◽

Dennis W. Lindle ◽

Hisanobu Wakita ◽

Rupert C. C. Perera

Keyword(s):

Fine Structure ◽

Aqueous Solutions ◽

Electronic Structures ◽

X Ray ◽

Absorption Fine ◽

X Ray Absorption

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Large anisotropic negative thermal expansion in Cu-TDPAT metal-organic framework: A combined in situ X-ray diffraction and DRIFTS study

Nano Research ◽

10.1007/s12274-020-2792-y ◽

2020 ◽

Vol 14 (2) ◽

pp. 404-410 ◽

Cited By ~ 2

Author(s):

Mehrdad Asgari ◽

Ilia Kochetygov ◽

Hassan Abedini ◽

Wendy L. Queen

Keyword(s):

Thermal Expansion ◽

Metal Organic Framework ◽

Negative Thermal Expansion ◽

X Ray Diffraction ◽

X Ray ◽

Metal Organic ◽

Organic Framework

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Extended X-ray Absorption Fine Structure Studies of InGaN Epilayers

MRS Proceedings ◽

10.1557/proc-831-e3.30 ◽

2004 ◽

Vol 831 ◽

Author(s):

V. Katchkanov ◽

K.P. O'Donnell ◽

J.F.W. Mosselmans ◽

S. Hernandez ◽

R.W. Martin ◽

...

Keyword(s):

Fine Structure ◽

Bond Length ◽

Molar Fraction ◽

Chemical Vapour ◽

Organic Chemical ◽

X Ray ◽

Absorption Fine ◽

Vegard’S Law ◽

Metal Organic ◽

X Ray Absorption

ABSTRACTThe local structure around In atoms in InGaN epilayers grown by Molecular Beam Epitaxy (MBE) and by Metal-Organic Chemical Vapour Deposition (MOCVD) was studied by means of Extended X-ray Absorption Fine Structure (EXAFS). The averaged In fraction of MOCVD grown samples ranged from 10% to 40% as estimated by Electron Probe Microanalysis (EPMA). The In fraction of MBE grown samples spanned the range from 13% to 96%. The In–N bond length was found to vary slightly with composition, both for MBE and MOCVD grown samples. Moreover, for the same In content, the In-N bond lengths in MOCVD samples were longer than those in MBE grown samples. In contrast, the In-In radial separations in MOCVD and MBE samples were found to be indistinguishable for the same In molar fraction. The In-Ga bond length was observed to deviate from average cation-cation distance predicted by Vegard's law for MBE grown samples which indicates alloy compositional fluctuations.

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Exceptional adsorption-induced cluster and network deformation in the flexible metal–organic framework DUT-8(Ni) observed by in situ X-ray diffraction and EXAFS

Physical Chemistry Chemical Physics ◽

10.1039/c5cp02180d ◽

2015 ◽

Vol 17 (26) ◽

pp. 17471-17479 ◽

Cited By ~ 54

Author(s):

Volodymyr Bon ◽

Nicole Klein ◽

Irena Senkovska ◽

Andreas Heerwig ◽

Jürgen Getzschmann ◽

...

Keyword(s):

Metal Organic Framework ◽

X Ray Diffraction ◽

X Ray ◽

Gate Opening ◽

Metal Organic ◽

Flexible Metal ◽

Organic Framework

The “gate opening” mechanism in flexible MOF Ni2(2,6-ndc)2dabco was elucidated in detail.

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Controlled Synthesis of Large Single Crystals of Metal‐Organic Framework CPO‐27‐Ni Prepared by a Modulation Approach: In situ Single Crystal X‐ray Diffraction Studies

Chemistry - A European Journal ◽

10.1002/chem.202100528 ◽

2021 ◽

Author(s):

Simon Maximilian Vornholt ◽

Caroline G. Elliott ◽

Cameron M. Rice ◽

Samantha E. Russell ◽

Peter J. Kerr ◽

...

Keyword(s):

Single Crystal ◽

Single Crystals ◽

Metal Organic Framework ◽

Controlled Synthesis ◽

X Ray Diffraction ◽

X Ray ◽

Metal Organic ◽

Organic Framework

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Extended X-ray Absorption Fine Structure Studies of GaN Epilayers Doped in situ with Er and Eu During Molecular Beam Epitaxy

MRS Proceedings ◽

10.1557/proc-798-y5.10 ◽

2003 ◽

Vol 798 ◽

Cited By ~ 3

Author(s):

V. Katchkanov ◽

J. F. W. Mosselmans ◽

S. Dalmasso ◽

K. P. O'Donnell ◽

R. W. Martin ◽

...

Keyword(s):

Fine Structure ◽

Rare Earth ◽

Molecular Beam Epitaxy ◽

Local Structure ◽

Molecular Beam ◽

X Ray ◽

Absorption Fine ◽

X Ray Absorption ◽

The Eu

ABSTRACTThe local structure around Er and Eu atoms introduced into GaN epilayers was studied by means of Extended X-ray Absorption Fine Structure above the appropriate rare-earth X-ray absorption edge. The samples were doped in situ during growth by Molecular Beam Epitaxy. The formation of ErN clusters was found in samples with high average Er concentrations of 32±6% and 12.4±0.8%, estimated by Wavelength Dispersive X-ray analysis. When the average Er concentration is decreased to 6.0±0.2%, 1.6±0.2% and 0.17±0.02%, Er is found in localised clusters of ErGaN phase with high local Er content. Similar behaviour is observed for Eu-doped samples. For an average Eu concentration of 30.5±0.5% clusters of pure EuN occur. Decreasing the Eu concentration to 10.4±0.5% leads to EuGaN clusters with high local Eu content. However, for a sample with an Eu concentration of 14.2±0.5% clustering of Eu was not observed.

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