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Article: Reports from Gyeongsang National University describe recent advances in heterocyclic chemistry.
- Article from:
- Chemicals & Chemistry
- Article date:
- September 18, 2009
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According to a study from South Korea, "The photophysical behavior of trans-2-styrylpyridazin-3(2H)-ones 3 strongly depend on the number and the position of substituents in the phenyl ring in THF, methylene chloride, acetonitrile and methanol. The absorption spectra of 3 containing, the electron-donating substituents at the para-position show the red-shift, whereas the spectra of 3 containing the electron-withdrawing substituents show the blue-shift."
"For the trans-2-(p-substituted-styryl)pyridazin-3(2H)-ones 3b-3h and 3k-3o, the magnitude of the solvatochromic shifts and the shape of the fluorescence spectra depend oil the number and/or the position of ...