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  4. Fast Characterization of Functionalized Silica Materials by Silicon-29 Surface-Enhanced NMR Spectroscopy Using Dynamic Nuclear Polarization
 
research article

Fast Characterization of Functionalized Silica Materials by Silicon-29 Surface-Enhanced NMR Spectroscopy Using Dynamic Nuclear Polarization

Lelli, Moreno
•
Gajan, David
•
Lesage, Anne
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2011
Journal of the American Chemical Society

We demonstrate fast characterization of the distribution of surface bonding modes and interactions in a series of functionalized materials via surface-enhanced nuclear magnetic resonance spectroscopy using dynamic nuclear polarization (DNP). Surface-enhanced silicon-29 DNP NMR spectra were obtained by using incipient wetness impregnation of the sample with a solution containing a polarizing radical (TOTAPOL). We identify and compare the bonding topology of functional groups in materials obtained via a sol gel process and in materials prepared by post-grafting reactions. Furthermore, the remarkable gain in time provided by surface-enhanced silicon-29 DNP NMR spectroscopy (typically on the order of a factor 400) allows the facile acquisition of two-dimensional correlation spectra.

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Type
research article
DOI
10.1021/ja110791d
Web of Science ID

WOS:000287909200026

Author(s)
Lelli, Moreno
Gajan, David
Lesage, Anne
Caporini, Marc A.  
Vitzthum, Veronika  
Mieville, Pascal  
Heroguel, Florent
Rascon, Fernando
Roussey, Arthur
Thieuleux, Chloe
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Date Issued

2011

Published in
Journal of the American Chemical Society
Volume

133

Start page

2104

End page

2107

Subjects

Solid-State Nmr

•

Inorganic Materials

•

Organic Groups

•

Frameworks

•

Zeolite

Editorial or Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
LRMB  
LRM  
Available on Infoscience
April 14, 2011
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/66441
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