Atomic Number Dependent “Structural Transitions” in Ordered Lanthanide Monolayers: Role of the Hydration Shell

Mitchell Miller; Miaoqi Chu; Binhua Lin; Wei Bu; Pulak Dutta

doi:10.1021/acs.langmuir.6b04609

Atomic Number Dependent “Structural Transitions” in Ordered Lanthanide Monolayers: Role of the Hydration Shell

Mitchell Miller, Miaoqi Chu, Binhua Lin, Wei Bu, Pulak Dutta^*

^*Corresponding author for this work

Physics and Astronomy

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

17 Scopus citations

Abstract

When lanthanide ions are present in the aqueous subphase of a floating monolayer (Langmuir film), the ions attracted to the interface will in many cases form commensurate and/or incommensurate two-dimensional structures. These lattices depend not only on the molecules forming the monolayer, but also on the atomic number of the lanthanide, with a sudden change between the lattice formed by lighter ions and that formed by heavier ions under a given monolayer. Since there are few other relevant differences between the lanthanides, we attribute the Z-dependent “transition” to the number of water molecules associated with each ion. The first hydration shell is thought to vary continuously from ∼9 in lighter lanthanides to ∼8 in heavier lanthanides.

Original language	English (US)
Pages (from-to)	1412-1418
Number of pages	7
Journal	Langmuir
Volume	33
Issue number	6
DOIs	https://doi.org/10.1021/acs.langmuir.6b04609
State	Published - Feb 14 2017

Funding

This work was supported by the US National Science Foundation under Grant No. DMR-1612876. The X-ray diffraction measurements were performed at ChemMatCARS (Sector 15, Advanced Photon Source). ChemMatCARS is supported by the U.S. National Science Foundation under Grant NSF/CHE-1346572. The Advanced Photon Source is supported by the U.S. Department of Energy under Contract DE-AC02-06CH11357.

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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title = "Atomic Number Dependent “Structural Transitions” in Ordered Lanthanide Monolayers: Role of the Hydration Shell",

abstract = "When lanthanide ions are present in the aqueous subphase of a floating monolayer (Langmuir film), the ions attracted to the interface will in many cases form commensurate and/or incommensurate two-dimensional structures. These lattices depend not only on the molecules forming the monolayer, but also on the atomic number of the lanthanide, with a sudden change between the lattice formed by lighter ions and that formed by heavier ions under a given monolayer. Since there are few other relevant differences between the lanthanides, we attribute the Z-dependent “transition” to the number of water molecules associated with each ion. The first hydration shell is thought to vary continuously from ∼9 in lighter lanthanides to ∼8 in heavier lanthanides.",

author = "Mitchell Miller and Miaoqi Chu and Binhua Lin and Wei Bu and Pulak Dutta",

note = "Funding Information: This work was supported by the US National Science Foundation under Grant No. DMR-1612876. The X-ray diffraction measurements were performed at ChemMatCARS (Sector 15, Advanced Photon Source). ChemMatCARS is supported by the U.S. National Science Foundation under Grant NSF/CHE-1346572. The Advanced Photon Source is supported by the U.S. Department of Energy under Contract DE-AC02-06CH11357. Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

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AU - Bu, Wei

AU - Dutta, Pulak

N1 - Funding Information: This work was supported by the US National Science Foundation under Grant No. DMR-1612876. The X-ray diffraction measurements were performed at ChemMatCARS (Sector 15, Advanced Photon Source). ChemMatCARS is supported by the U.S. National Science Foundation under Grant NSF/CHE-1346572. The Advanced Photon Source is supported by the U.S. Department of Energy under Contract DE-AC02-06CH11357. Publisher Copyright: © 2017 American Chemical Society.

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AB - When lanthanide ions are present in the aqueous subphase of a floating monolayer (Langmuir film), the ions attracted to the interface will in many cases form commensurate and/or incommensurate two-dimensional structures. These lattices depend not only on the molecules forming the monolayer, but also on the atomic number of the lanthanide, with a sudden change between the lattice formed by lighter ions and that formed by heavier ions under a given monolayer. Since there are few other relevant differences between the lanthanides, we attribute the Z-dependent “transition” to the number of water molecules associated with each ion. The first hydration shell is thought to vary continuously from ∼9 in lighter lanthanides to ∼8 in heavier lanthanides.

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Atomic Number Dependent “Structural Transitions” in Ordered Lanthanide Monolayers: Role of the Hydration Shell

Abstract

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ASJC Scopus subject areas

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