TY - JOUR
T1 - Atomic Number Dependent “Structural Transitions” in Ordered Lanthanide Monolayers
T2 - Role of the Hydration Shell
AU - Miller, Mitchell
AU - Chu, Miaoqi
AU - Lin, Binhua
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.
PY - 2017/2/14
Y1 - 2017/2/14
N2 - 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.
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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U2 - 10.1021/acs.langmuir.6b04609
DO - 10.1021/acs.langmuir.6b04609
M3 - Article
C2 - 28107635
AN - SCOPUS:85012900447
SN - 0743-7463
VL - 33
SP - 1412
EP - 1418
JO - Langmuir
JF - Langmuir
IS - 6
ER -