Solid-state NMR study of adsorbed water molecules in covalent organic framework materials

2020 ◽  
Vol 305 ◽  
pp. 110287 ◽  
Author(s):  
Jiaqi Ma ◽  
Xiao-Bin Fu ◽  
Yuquan Li ◽  
Tian Xia ◽  
Likun Pan ◽  
...  
2003 ◽  
Vol 107 (45) ◽  
pp. 12438-12443 ◽  
Author(s):  
Alexander G. Stepanov ◽  
Timur O. Shegai ◽  
Mikhail V. Luzgin ◽  
Nadine Essayem ◽  
Hervé Jobic

Author(s):  
M. Concistrè ◽  
S. Mamone ◽  
M. Denning ◽  
G. Pileio ◽  
X. Lei ◽  
...  

We report a solid-state NMR study of the anisotropic nuclear spin interactions in H 2 O@C 60 at room temperature. We find evidence of significant dipole–dipole interactions between the water protons, and also a proton chemical shift anisotropy (CSA) interaction. The principal axes of these interaction tensors are found to be perpendicular. The magnitude of the CSA is too large to be explained by a model in which the water molecules are partially aligned with respect to an external axis. The evidence indicates that the observed CSA is caused by a distortion of the geometry or electronic structure of the fullerene cages, in response to the presence of the endohedral water.


2021 ◽  
Author(s):  
Weiming Jiang ◽  
Ping Wang ◽  
Ken-ichi Otake ◽  
Susumu Kitagawa ◽  
Yasuto Noda ◽  
...  

2018 ◽  
Vol 141 (3) ◽  
pp. 1227-1234 ◽  
Author(s):  
Gen Zhang ◽  
You-lee Hong ◽  
Yusuke Nishiyama ◽  
Songyan Bai ◽  
Susumu Kitagawa ◽  
...  

2013 ◽  
Vol 744 ◽  
pp. 119-124 ◽  
Author(s):  
Kyle J. Cluff ◽  
Michael Schnellbach ◽  
Casie R. Hilliard ◽  
Janet Blümel

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