✦ LIBER ✦
Time-resolved vibrational spectroscopy of an electric field-induced transition in a nematic liquid crystal by use of step-scan 2D FT-IR
✍ Scribed by Vasilis G. Gregoriou; James L. Chao; Hirokazu Toriumi; Richard A. Palmer
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 474 KB
- Volume
- 179
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
A study of the kinetics of reorientation of a uniaxially aligned nematic liquid crystal (4-pentyl-4'-cyanobiphenyl) under the influence of an external ac electric field is reported.
Step-scan FT-IR was employed for the acquisition of the dynamic linear dichroism spectra. 2D FT-IR frequency correlation maps indicate that the rigid core of the nematic molecule reorients as a unit and suggest that the phenyl chain may reorient more rapidly than the core.