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有机化学
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有机化学 ›› 1990, Vol. 10 ›› Issue (1): 54-58. 上一篇    下一篇

研究论文

若干1-(N-甲基-4-吡啶基)-3-(N-甲基-4-吡啶亚基)-4-烷基环戊烯-1-1酮)-5-菁化合物可见吸收光谱的溶剂效应

范伟强;陶伟国   

  1. 杭州大学化学系
  • 发布日期:1990-02-25

Solvent effects on the visible spectra of 1-(N-methyl-4-pyridino)-3-(N-methyl-4-pyridylene)-4-alkyl-5-oxocyclopent-1-ene cyanines

FAN WEIQIANG;TAO WEIGUO   

  • Published:1990-02-25

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本文用岛津UV-26 型紫外可见分光光度仪研究了桥环菁化合物吸收光谱的溶剂效应, 并探讨了该类菁作为一种新的溶剂极性标度探针的可能性。

关键词: 紫外分光光度法, 感光材料, 吡啶 P, 溶剂效应, 环戊烯 P, 桥环化合物, 菁染料

The visible absorption max. (lmax) of the title compounds (I, Ph) and (II, Me) in 27 organic solvents were measured. Both I and II showed neg. solvatochromism and remarkable sensitivity to the polarity of solvent. A fairly good correlation between lmax and the solvent polarity scale (Z) and ET(30) values was established. The electron transfer energy ET(1) and ET(2), calculated from the lmax value in different solvents, showed good parallel relationship with Z and ET(30). Thus ET(1) and ET(2) could be used as a new solvent polarity scale.

Key words: PYRIDINE P, ULTRAVIOLET SPECTROPHOTOMETRY, SOLVENT EFFECT, LIGHT SENSITIVE MATERIAL, CYCLOPENTENE P, BRIDGE COMPOUNDS, CYANINE DYES

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