Solid-State NMR Characterization of Mixed Phosphonic Acid Ligand Binding and Organization on Silica Nanoparticles

Langmuir ◽  
2016 ◽  
Vol 32 (13) ◽  
pp. 3253-3261 ◽  
Author(s):  
Stephen K. Davidowski ◽  
Gregory P. Holland
Keyword(s):  
Solid State ◽  
Ligand Binding ◽  
Silica Nanoparticles ◽  
Phosphonic Acid ◽  
Solid State Nmr ◽  
Acid Ligand ◽  
Nmr Characterization

High-Resolution Solid-State NMR Characterization of Ligand Binding to a Protein Immobilized in a Silica Matrix

2017 ◽  
Vol 121 (34) ◽  
pp. 8094-8101 ◽  
Author(s):  
Linda Cerofolini ◽  
Stefano Giuntini ◽  
Alexandra Louka ◽  
Enrico Ravera ◽  
Marco Fragai ◽  
...  
Keyword(s):  
Solid State ◽  
High Resolution ◽  
Ligand Binding ◽  
Solid State Nmr ◽  
Silica Matrix ◽  
Nmr Characterization

Preparation and solid state NMR characterization of phosphonates encapsulated in raw and organically modified SBA-15

2009 ◽  
Vol 1227 ◽  
Author(s):  
Thierry Azais ◽  
Daniela Aiello ◽  
Flaviano Testa ◽  
Guillaume Laurent ◽  
Florence Babonneau
Keyword(s):  
Solid State ◽  
Phosphonic Acid ◽  
Solid State Nmr ◽  
Room Temperature ◽  
Double Quantum ◽  
Relative Mobility ◽  
Nmr Characterization ◽  
Close Proximity ◽  
Organically Modified

AbstractWe present in this communication the preparation and the solid state NMR characterization of phenyl phosphonic acid encapsulated both in pure and aminopropyl-modified SBA-15 mesoporous silica materials. The 31P and 1H MAS studies revealed two radically different behaviors of the confined molecules. The included phosphonic acid in SBA-15 is submitted to a confinement effect that implies a weak interaction with the SiO2 surface and a relative mobility at room temperature. On the contrary, phenyl phosphonic acid molecules in the aminopropyl modified sample possess a strong interaction with the hybrid surface of the material. This finding is supported by a two dimensional double-quantum 1H experiment that revealed the close proximity between phenyl phosphonic acid and aminopropyl surface groups.

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