200 MHz DNP NMR spectroscopy with a 131 GHz gyrotron for the analysis of polymer surface

Author

Horii, F. ; Idehara, T. ; Fujii, Y. ; Ogawa, I. ; Horii, A. ; Entzminger, G. ; Doty, F.D.

Author_Institution

Res. Center for Dev. of Far-Infrared Region, Univ. of Fukui (FIR FU), Fukui, Japan

fYear

2011

fDate

2-7 Oct. 2011

Firstpage

1

Lastpage

2

Abstract

Dynamic nuclear polarization (DNP) with a 131.5 GHz gyrotron (Gyrotron FU CW IV) has achieved enhancement factor of around 30 by using stable mono-radical 4-amino-TEMPO for 200 MHz high-resolution solid-state NMR spectroscopy for the analysis of polymer surface. Dependencies of the enhancement factor on irradiation time of the gyrotron output, the power of irradiation, cooling time, and irradiation frequency are examined. Application of the 200 MHz DNP NMR spectroscopy to the analysis of polymer surface is also presented briefly.

Keywords

NMR spectroscopy; gyrotrons; polymers; DNP NMR spectroscopy; dynamic nuclear polarization; frequency 131 GHz; frequency 131.5 GHz; frequency 200 MHz; gyrotron output; high-resolution solid-state NMR spectroscopy; polymer surface analysis; stable mono-radical 4-amino-TEMPO; Copper; Finite impulse response filter; Gyrotrons; Nuclear magnetic resonance; Radiation effects; Radio frequency; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on

Conference_Location

Houston, TX

ISSN

2162-2027

Print_ISBN

978-1-4577-0510-6

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/irmmw-THz.2011.6104885

Filename

6104885