| Numéro |
J. Phys. I France
Volume 6, Numéro 12, December 1996
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|
|---|---|---|
| Page(s) | 1575 - 1580 | |
| DOI | https://doi.org/10.1051/jp1:1996175 | |
DOI: 10.1051/jp1:1996175
J. Phys. I France 6 (1996) 1575-1580Twist Morphology of Organic Crystal (BPE-DMB)IBr
Kazushige Kawabata1, Tomonori Kumagai1, Makoto Mizutani2 and Takashi Sambongi1
1 Department of Physics, Graduate School of Science, Hokkaido University, Sapporo 060, Japan
2 PRESTO, JRDC (Idemitsu Kosan Co. LTD), Sodegaura Chiba 299-02, Japan
(Received 26 April 1996, accepted 1 July 1996)
© Les Editions de Physique 1996
J. Phys. I France 6 (1996) 1575-1580
Twist Morphology of Organic Crystal (BPE-DMB)IBr
Kazushige Kawabata1, Tomonori Kumagai1, Makoto Mizutani2 and Takashi Sambongi1
1 Department of Physics, Graduate School of Science, Hokkaido University, Sapporo 060, Japan
2 PRESTO, JRDC (Idemitsu Kosan Co. LTD), Sodegaura Chiba 299-02, Japan
(Received 26 April 1996, accepted 1 July 1996)
Abstract
Crystals of (BPE-DMB)IBr
2, where BPE-DMB denotes 1,4-bis[2-(pyrene-1-yl) vinyl]-2,5-dimethylbenzene, are found to be twisted along the growing axis.
Their morphology was examined in detail by X-ray examination, scanning electron and optical microscopic observations. It was
found that the twisted crystals are quasi-stable and that the twisting is not discrete but rather continuous in sub-micron
scale. The relation between a twist pitch and the cross-section area was obtained and compared with the dislocation model
proposed by Eshelby.
© Les Editions de Physique 1996