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Infrared synchrotron radiation from bending magnet and edge radiation sources for the study of orientation and conformation in anisotropic materials
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10.1063/1.3562900
/content/aip/journal/rsi/82/3/10.1063/1.3562900
http://aip.metastore.ingenta.com/content/aip/journal/rsi/82/3/10.1063/1.3562900

Figures

Image of FIG. 1.
FIG. 1.

Calibration of the polarization of the beam at the microscopes’ focus point: (a) Globar plus external polarizer; (b) BM branch; and (c) ER branch. Horizontal axes correspond to the x-axis of the microscope stage and the electric vector of the synchrotron IR beam.

Image of FIG. 2.
FIG. 2.

Comparison of the polarized spectra of oriented PET with and without external polarizer: (a) BM branch; (b) ER branch. Continuous line: beam; Dotted line: globar plus polarizer; ∥ and ⊥ refer to orientation of the sample draw axis with respect to the x-axis of the microscope stage.

Image of FIG. 3.
FIG. 3.

Schematic representation of the line along which the spectra were acquired.

Image of FIG. 4.
FIG. 4.

(a) Dichroic ratio for the 1340 cm−1 band (CH2 wagging mode) at both beamline branches. (b) Dichroic ratio for the 1505 cm−1 band (ring deformation mode) at both beamline branches.

Image of FIG. 5.
FIG. 5.

1340/1370 cm−1 band ratio (trans to gauche conformers) from the calculated structural factor spectra along the line mapped.

Tables

Generic image for table
Table I.

Absorbance values for some PET bands, ratioed to the 1456 cm−1 band.

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/content/aip/journal/rsi/82/3/10.1063/1.3562900
2011-03-21
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Infrared synchrotron radiation from bending magnet and edge radiation sources for the study of orientation and conformation in anisotropic materials
http://aip.metastore.ingenta.com/content/aip/journal/rsi/82/3/10.1063/1.3562900
10.1063/1.3562900
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