EFFECT OF PH AND SOLVENT ON THE ABSORPTION AND EMISSION CHARACTERISTICS OF ARYLIDENE DERIVATIVES OF PICOLINIC-ACID HYDRAZIDE

被引：0
|
作者：
ELKEMARY, MA [1 ]
ELMEHASSEB, IM [1 ]
ETAIW, SEH [1 ]
机构：
[1] TANTA UNIV,FAC SCI,DEPT CHEM,KAFR AL SHEIKH,EGYPT
来源：
CANADIAN JOURNAL OF APPLIED SPECTROSCOPY | 1995年 / 40卷 / 04期
关键词：
D O I：
暂无
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The electronic absorption and emission spectra of arylidene derivatives of picolinic hydrazide have been measured at room temperature (298K) in solvents of different polarities (cyclohexane, dioxane, methylene chloride, ethanol, acetonitrile and dimethylformamide) and in aqueous solutions with different pH values. The effect of solvent on the spectral propel-ties is discussed. The ground and excited singlet-state dipole moments were calculated on the basis of Onsager's theory of the reaction field from solvatochromic shifts. The values of pK and pK* for some of the equilibria are presented.
引用
收藏
页码：99 / 104
页数：6
相关论文
共 50 条
12345