Spectroscopic study of crown ethers containing fluorescent substituents

Research output: Article

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 - jún. 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

ASJC Scopus subject areas

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

Cite this

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title = "Spectroscopic study of crown ethers containing fluorescent substituents",
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.",
keywords = "Complexation, Crown ethers, Fluorescence spectroscopy",
author = "I. K{\'a}sa and B. {\'A}gai and M. Kubinyi and A. Grofcsik",
year = "1997",
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day = "1",
doi = "10.1016/S0022-2860(96)09555-5",
language = "English",
volume = "408-409",
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journal = "Journal of Molecular Structure",
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T1 - Spectroscopic study of crown ethers containing fluorescent substituents

AU - Kása, I.

AU - Ágai, B.

AU - Kubinyi, M.

AU - Grofcsik, A.

PY - 1997/6/1

Y1 - 1997/6/1

N2 - 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.

AB - 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.

KW - Complexation

KW - Crown ethers

KW - Fluorescence spectroscopy

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JO - Journal of Molecular Structure

JF - Journal of Molecular Structure

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