Reflection symmetry breaking in achiral rod-shaped smectic liquid crystals?
David M Walba1, Eva Korblova, Cheng-Cher Huang
1Department of Chemistry and Biochemistry, 215 UCB, Liquid Crystal Materials Research Center, University of Colorado, Boulder, Colorado 80309, USA. walba@colorado.edu
Journal of the American Chemical Society
|April 20, 2006
Summary
This study investigated the chirality of the SmC phase in 4'-octyloxyphenyl-4-octyloxybenzoate. Results indicate chiral domains form due to surface interactions, not inherent phase chirality.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Liquid Crystal Research
Background:
- Recent reports suggest the SmC phase of 4 -octyloxyphenyl-4-octyloxybenzoate may exhibit chirality.
- Understanding the fundamental properties of liquid crystal phases is crucial for advanced material applications.
Purpose of the Study:
- To investigate the potential chirality of the SmC phase in 4 -octyloxyphenyl-4-octyloxybenzoate.
- To determine if observed chirality is an intrinsic property of the phase or an artifact of experimental conditions.
Main Methods:
- Examination of the SmC phase using sensitive probes for chirality and polarity.
- Analysis of liquid crystal (LC) cells, considering surface interactions.
Main Results:
- Chiral domains were observed in LC cells of the phenylbenzoate, influenced by surface interactions.
- Sensitive probes detected no intrinsic chirality or polarity in the absence of surface influences.
Conclusions:
- The SmC phase of 4 -octyloxyphenyl-4-octyloxybenzoate does not appear to be intrinsically chiral.
- Observed chirality is likely an artifact arising from interactions with cell surfaces.
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