- 作者: --
- 作者服務機構: Chemistry Department, Persian Gulf University, Bushehr, Iran
- 中文摘要:
The solvatochromic behavior of a penta-tert-butyl prydinium N-phenolate betaine dye was studied using UV-visible spectrophotometry in several binary mixture solvents. The solvent polarity parameter, ET (1) (kcal. mol-1) was calculated from the position of the longest-wavelength intramolecular charge transfer absorption band of this penta-tert-butyl betaine dye.
For binary solvent mixtures, all plots of ET (1) versus the mole fraction of a more polar component are nonlinear owing to preferential solvation of the probe by one component of the binary solvent mixture.
In the computation of ET (1) it was assumed that the two solvents mixed interact to form a common structure with an ET (1) value not always intermediate between those of the two solvents mixed. The results obtained are explained by the strong synergism observed for some of the binary mixtures with strong hydrogen bond donors (HBD) solvents such as alcohols. - 英文摘要: --
- 中文關鍵字: Binary solvent mixtures; Solvatochromism; Solvent polarity; Penta-tert-butyl prydinium N-phenolate betaine dye; Synergism.
- 英文關鍵字: --