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Crystal morphology and their lattice contraction control for the topochemical reaction of bis(phenylethenyl)-dicyanopyrazines

Authors
Kim, Jae HongChoi, Young ChulKim, Bong ShikChoi, Dong HoonKim, Sung Hoon
Issue Date
2008
Publisher
ELSEVIER SCI LTD
Keywords
topochemical photoreaction; crystal morphology; lattice contraction; intermolecular interaction
Citation
DYES AND PIGMENTS, v.76, no.2, pp.422 - 428
Indexed
SCIE
SCOPUS
Journal Title
DYES AND PIGMENTS
Volume
76
Number
2
Start Page
422
End Page
428
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/125535
DOI
10.1016/j.dyepig.2006.09.009
ISSN
0143-7208
Abstract
Topochemical photoreaction of bis(phenylethenyl)-dicyanopyrazines (1) was conducted in solution, in the vapor deposited thin film, and in the single crystals. Compound 1 showed the crystal morphology to give the yellow and orange colored crystals. The difference in crystal structures of yellow and orange crystals was confirmed with X-ray crystal analysis which revealed that the orange one was contracted in the crystallographic c-axis by 0.11 angstrom than that of the yellow one at the same temperature. The physical property and photoreactivity of two crystals were explained with the topochemical control and lattice contraction. (c) 2006 Elsevier Ltd. All rights reserved.
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