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 Å 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.
Original language | English |
---|---|
Pages (from-to) | 422-428 |
Number of pages | 7 |
Journal | Dyes and Pigments |
Volume | 76 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2008 |
Bibliographical note
Funding Information:This research was supported by the Yeungnam University research grants in 2005.
Keywords
- Crystal morphology
- Intermolecular interaction
- Lattice contraction
- Topochemical photoreaction
ASJC Scopus subject areas
- General Chemical Engineering
- Process Chemistry and Technology