FLUORESCENCE-SPECTRA OF SALT-SOLUTIONS OF COUMARIN-CROWN ETHERS

被引：11

作者：

AKYUZ, S

BALUT, M

GOCMEN, A

ERK, C

机构：

[1] ISTANBUL TECH UNIV,DEPT CHEM,MASLAK 80626,TURKEY

[2] ISTANBUL UNIV,DEPT PHYS,VEZNECILER 34459,TURKEY

[3] MARMARA UNIV,DEPT CHEM,KADIKOY 81040,TURKEY

来源：

SPECTROSCOPY LETTERS | 1995年 / 28卷 / 04期

关键词：

MACROCYCLICS; COUMARIN-CROWN ETHERS; CATION COMPLEXATION; FLUORESCENCE SPECTRA;

D O I：

10.1080/00387019508009904

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The fluorescence spectra of the coumarin derivatives of crown ethers obtained from 7,8-dihydroxycoumarins were studied in the presence of some alkali and alkaline earth cations in acetonitrile. The altered fluorescence spectra were examined qualitatively from the point of enhancement of fluorescent quantum yields as well as a resonance. Heavy metal effects were eliminated since there is no influence of the metal salts on the spectra of the initial coumarin derivatives. However, both the complexation-enhanced fluorescence and complexation-enhanced quenching spectra is observed in the fluorescence emission and excitation spectra of macrocyclic ether-coumarin I metal salt systems. The origin of results are briefly discussed in terms of crown ether complexation. Ln water solutions almost no such effects were observed.

引用

页码：603 / 610

页数：8

共 17 条

[1] THE SYNTHESIS OF NOVEL CROWN ETHERS .1. COUMARIN DERIVATIVES OF CROWN ETHERS [J].