|
Authors
|
Vyalikh, A. ; Wang, De-Yi ; Wagenknecht, U. ; Heinrich, G. ; Scheler, U.
|
|
Title
|
Molecular dynamics in aluminum layered double hydroxides as studied by 1H T1p NMR measurements
|
|
Date
|
07.06.2011
|
|
Number
|
27163
|
|
Abstract
|
Proton dynamics in pristine and organically-modified layered double hydroxide has been studied by 1H T1?. Inverse Laplace transform with spectral resolution results in a correlation of T1? and chemical shift.<br /><br />In LDH two contributions are resolved. They are assigned to the metal hydroxides, forming the LDH sheets (48 ms), and mobile interlayer water (2 ms). Apparent T1? values of OH-protons in surfactant-modified LDH are different in dodecylbenzenesulfonate- (SDBS) and sodium octasulfonate- (C8) modified LDH. This difference is explained by the presence of water in LDHSDBS. The effects of spin diffusion have been studied by performing 2D 1H RFDR in the LDHSDBS.<br /><br />* Combination of proton relaxation time measurements with chemical shift resolution permits assignment to structural motifs. <br />* Inverse Laplace transform is applied for data analysis. <br />* A significant difference of the mobility between water and OH groups is found. · Mobility varies with the cation distribution.
|
|
Publisher
|
Chemical Physics Letters
|
|
Wikidata
|
|
|
Citation
|
Chemical Physics Letters 509 (2011) 138-142
|
|
DOI
|
https://doi.org/10.1016/j.cplett.2011.04.078
|
|
Tags
|
|
