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Thermally stable iridescent colors of a new low-molecular-weight cholesteric compound in the solid state and the application to fullcolor recording

Published online by Cambridge University Press:  10 February 2011

Nobuyuki Tamaoki ,
Alexander V. Parfenov ,
Atsushi Masaki  and
Hiro Matsuda
Nobuyuki Tamaoki
Affiliation:
National Institute of Materials and Chemical Research, 1–1 Higashi, Tsukuba, Ibaraki 305, Japan
Alexander V. Parfenov
Affiliation:
National Institute of Materials and Chemical Research, 1–1 Higashi, Tsukuba, Ibaraki 305, Japan
Atsushi Masaki
Affiliation:
National Institute of Materials and Chemical Research, 1–1 Higashi, Tsukuba, Ibaraki 305, Japan
Hiro Matsuda
Affiliation:
National Institute of Materials and Chemical Research, 1–1 Higashi, Tsukuba, Ibaraki 305, Japan
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Abstract

We synthesized a series of new di-cholesteryl esters of several diacids. One of the compounds containing both of a diyne unit and long alkylene units, in the form of a thin solid film, showed stable iridescent colours in the visible region after rapid cooling process from the temperature of the cholesteric liquid crystalline phase. Measurement of selective reflectance of visible light, X-ray diffraction, optical rotation dispersion of the solid films proved that the films remained the cholesteric ordering of the molecules. The cholesteric structure in the solid films were completely stable at room temperature. The colour of the solid film was totally, partially or in imagewise manner changed into selected colours by adjusting the temperature of the surface just before the rapid cooling process. The property of this compound can be applicable to memory media with high density using the spectrum of light, or to thermosensitive full-colour recording materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 488: Symposium J – Electrical, Optical & Magnetic Properties of Organic IV , 1997 , 915
Copyright
Copyright © Materials Research Society 1998

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References

1. Reinitzer, F., Monatsh. Chem. 9, 421–441 (1888).10.1007/BF01516710Google Scholar
2. Neville, A. C. and Caveney, S., Biol. Rev. 44, 531–562 (1969).Google Scholar
3. Samulski, E. T. and Tobolsky, A. V., Nature 216, 997 (1967).Google Scholar
4. Finkelmann, H., Koldehoff, J. and Ringsdorf, H., Angew. Chem. Int. Ed. Engl. 17, 935–936 (1978).10.1002/anie.197809351Google Scholar
5. It has also been reported that some mixtures of cholesteryl hydrogen phthalate and some cholesteryl derivatives show stable cholesteric solids at 25 °C: Mahler, W., Panar, M., J. Am. Chem. Soc. 94, 7195–7197 (1972).Google Scholar
6. Broer, D. J., Lub, J. and Mol, G. N., Nature 378, 467–469 (1995).Google Scholar
7. Shannon, P. J., Macromolecules 17, 1873–1876 (1984).Google Scholar
8. Tsutsui, T. and Tanaka, R., Polymer 21, 1351–1352 (1980).Google Scholar
9. Watanabe, J., Nagase, T., Itoh, H., Ishi, T. and Satoh, T., Mol. Cryst. Liq. Cryst. 164, 135–143 (1988).Google Scholar
10. Ishikawa, W., Inada, H., Nakano, H. and Shirota, Y., J. Phys. D: Appl. Phys. 26, B94–B99 (1993).Google Scholar