Spectroscopic study of crown ethers containing fluorescent substituents

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The selective complex formation of two new benzo[18]crown-5 ethers with alkali ions has been studied by fluorescence spectroscopy. The crown ether BI-B15C5 contains benzimidazole as a fluorescent substituent whereas BPY-B15C5 is a 2-benzopyrylium perchlorate derivative. The long-wavelength absorption bands of both crown ethers show a hypochromic and a hypsochromic shift after complexation with lithium or sodium perchlorate in acetonitrile. The fluorescence intensity of BI-B15C5 decreases but the shape of the fluorescence excitation and emission spectra does not change. On the other hand, the fluorescence intensity of BPY-B15C5 increases with complexation and the emission maximum shifts towards shorter wavelengths.

Original languageEnglish
Pages (from-to)547-551
Number of pages5
JournalJournal of Molecular Structure
Volume408-409
DOIs
Publication statusPublished - Jun 1 1997

Fingerprint

Crown Ethers
ethers
Fluorescence
Complexation
fluorescence
perchlorates
Wavelength
Ethers
Fluorescence Spectrometry
Fluorescence spectroscopy
Alkalies
lithium perchlorates
Absorption spectra
shift
wavelengths
Ions
acetonitrile
Derivatives
alkalies
emission spectra

Keywords

  • Complexation
  • Crown ethers
  • Fluorescence spectroscopy

ASJC Scopus subject areas

  • Structural Biology
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

Spectroscopic study of crown ethers containing fluorescent substituents. / Kása, I.; Ágai, B.; Kubinyi, M.; Grofcsik, A.

In: Journal of Molecular Structure, Vol. 408-409, 01.06.1997, p. 547-551.

Research output: Contribution to journalArticle

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