Synthesis and spectroscopic study of 2,7-diethylamino-2-oxo-2H-chromen-3-yl benzothiazole-6-sulfonyl chlorides and its derivatives

被引：3

作者：

Al-Kindy, Salma M. Z. ^{[1
]}

Al-Sharji, Nada ^{[1
]}

Al-Harasi, Ahmed F. ^{[1
]}

Suliman, FakhrEldin O. ^{[1
]}

Al-Lawati, Haider J. ^{[1
]}

Schulman, Stephen ^{[2
]}

机构：

[1] Sultan Qaboos Univ, Dept Chem, Coll Sci, POB 36, Al Khoud 123, Oman

[2] Univ Florida, Dept Chem, Gainesville, FL 32611 USA

来源：

ARABIAN JOURNAL OF CHEMISTRY | 2017年 / 10卷

关键词：

Coumarin-6; Derivatives; Electronic absorption; Emission spectra; Surfactant; INTRAMOLECULAR CHARGE-TRANSFER; COUMARIN-6-SULFONYL CHLORIDE; COUMARIN DYES; ABSORPTION; PHOSPHORIMETRY; FLUOROMETRY; LABEL;

D O I：

10.1016/j.arabjc.2012.06.015

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

2,7-Diethylamino-2-oxo-2H-chromen-3-yl benzothiazole-6-sulfonyl chlorides dye (Coumarin 6-SO2Cl) was used to synthesize anilines and amino acid derivatives. The electronic absorption and emission spectra of the label and its derivatives in organic solvents of different polarity, micellar systems and in aqueous buffered media are investigated. The label and its derivatives exhibited more or less the same excitation and emission wavelength around 470 and 520 nm, respectively. Maximum fluorescence quantum yield for aniline derivative was observed in ethyl acetate while minimum yield was observed in water. In micellar systems, maximum quantum yield was observed in the presence of Tw-20 for the label while proline derivative gave maximum enhancement in the presence of Tw-80. The results reflect the importance of medium effect on the fluorescence intensity and molar absorptivity of the label and its derivatives. (C) 2012 Production and hosting by Elsevier B. V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license.

引用

页码：S114 / S120

页数：7

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