Solvatochromism of catechol derivatives – solute/solvent interactions
Solvatochromism of catechol derivatives – solute/solvent interactions
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儿茶酚衍生物的溶剂变色现象 â 溶质/溶剂相互作用
DOI:
10.1002/poc.3003
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发表时间:
2012
影响因子:
1.8
通讯作者:
S. Spange
中科院分区:
文献类型:
--
作者:
F. Riedel;S. Spange
The solvatochromism of nine push–pull substituted catechol derivatives has been studied in a set of 39 various solvents. The influence of successive methyl substitution at the catechol OH groups on the extent of the solvatochromic shift has been investigated. The positive solvatochromism of 2‐(3,4‐dihydroxybenzylidene)‐2H‐indene‐1,3‐dione amounts 4360 cm–1, which ranges from toluene to hexamethyl‐phosphoric triamide. To the best of our knowledge, it is one of the largest positive solvatochromic extent measured for a positive solvatochromic dye, comparable with Brooker's thiobarbituric acid with an extent of 4400 cm–1. The detailed analyses of the solvatochromism were carried out by alternatively using the Kamlet–Taft and Catalán solvent parameters to achieve information of dipolarity versus polarizability effects of solvent upon solvatochromic properties. In solvents with highβvalues such as alcohols (0.66 <β< 0.90), amides (0.48 <β< 0.80), dimethyl sulfoxide (β= 0.76), tetramethyl urea (β= 0.80) and hexamethyl‐phosphoric triamide (β= 1.05) UV–Vis absorption spectra show two separateλmax, which are caused by a deprotonation reaction. The solvatochromic behaviour of the anionic species is compared with those of the catechol derivatives. Copyright © 2012 John Wiley & Sons, Ltd.
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DOI:
10.1039/p29790001723
发表时间:
1979
期刊:
Journal of The Chemical Society-perkin Transactions 1
影响因子:
--
作者:
R. Taft;M. J. Kamlet
通讯作者:
M. J. Kamlet
影响因子:
4.5
作者:
K. Yumura;H. Otani;J. Mizuguchi
通讯作者:
J. Mizuguchi
影响因子:
3.6
作者:
KAMLET, MJ;HALL, TN;TAFT, RW
通讯作者:
TAFT, RW
影响因子:
15
作者:
BROOKER, LGS;CRAIG, AC;LINCOLN, LL
通讯作者:
LINCOLN, LL
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
J. Catalán;H. Hopf
通讯作者:
H. Hopf