Investigation of alkali metal cation selectivities of lariat ethers by electrospray ionization mass spectrometry

Esther C. Kempen; Jennifer S. Brodbelt; Richard A. Bartsch; Youngchan Jang; Jong Seung Kim

doi:10.1021/ac990236p

Investigation of alkali metal cation selectivities of lariat ethers by electrospray ionization mass spectrometry

Esther C. Kempen, Jennifer S. Brodbelt, Richard A. Bartsch, Youngchan Jang, Jong Seung Kim

Research output: Contribution to journal › Article › peer-review

67 Citations (Scopus)

Abstract

The alkali metal ion selectivities of several dibenzo-16-crown-5 lariat ethers are investigated by electrospray ionization mass spectrometry (ESIMS). Specifically, the mass spectral peak intensities of lariat ether/alkali metal cation complexes obtained by electrospray ionization of solutions containing each lariat ether with lithium, sodium, and potassium salts are compared. The relative intensities of peaks for the lariat ether/alkali metal cation complexes indicate the metal-ion selectivities of the lariat ethers. A series of dibenzo-16-crown-5 lariat ethers containing methoxy, carboxylic acid, ester, or amide pendant groups is studied in this fashion. A majority of these lariat ethers studied are found to be selective for Na⁺ vs either Li⁺ or K⁺ in methanolic solution. The selectivities obtained by the electrospray mass spectrometric method are compared with reported selectivities obtained by potentiometric methods with solvent polymeric membrane electrodes.

Original language	English
Pages (from-to)	5493-5500
Number of pages	8
Journal	Analytical chemistry
Volume	71
Issue number	24
DOIs	https://doi.org/10.1021/ac990236p
Publication status	Published - 1999 Dec 15
Externally published	Yes

ASJC Scopus subject areas

Analytical Chemistry

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title = "Investigation of alkali metal cation selectivities of lariat ethers by electrospray ionization mass spectrometry",

abstract = "The alkali metal ion selectivities of several dibenzo-16-crown-5 lariat ethers are investigated by electrospray ionization mass spectrometry (ESIMS). Specifically, the mass spectral peak intensities of lariat ether/alkali metal cation complexes obtained by electrospray ionization of solutions containing each lariat ether with lithium, sodium, and potassium salts are compared. The relative intensities of peaks for the lariat ether/alkali metal cation complexes indicate the metal-ion selectivities of the lariat ethers. A series of dibenzo-16-crown-5 lariat ethers containing methoxy, carboxylic acid, ester, or amide pendant groups is studied in this fashion. A majority of these lariat ethers studied are found to be selective for Na+ vs either Li+ or K+ in methanolic solution. The selectivities obtained by the electrospray mass spectrometric method are compared with reported selectivities obtained by potentiometric methods with solvent polymeric membrane electrodes.",

author = "Kempen, {Esther C.} and Brodbelt, {Jennifer S.} and Bartsch, {Richard A.} and Youngchan Jang and Kim, {Jong Seung}",

year = "1999",

month = dec,

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doi = "10.1021/ac990236p",

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volume = "71",

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journal = "Analytical chemistry",

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T1 - Investigation of alkali metal cation selectivities of lariat ethers by electrospray ionization mass spectrometry

AU - Kempen, Esther C.

AU - Brodbelt, Jennifer S.

AU - Bartsch, Richard A.

AU - Jang, Youngchan

AU - Kim, Jong Seung

PY - 1999/12/15

Y1 - 1999/12/15

N2 - The alkali metal ion selectivities of several dibenzo-16-crown-5 lariat ethers are investigated by electrospray ionization mass spectrometry (ESIMS). Specifically, the mass spectral peak intensities of lariat ether/alkali metal cation complexes obtained by electrospray ionization of solutions containing each lariat ether with lithium, sodium, and potassium salts are compared. The relative intensities of peaks for the lariat ether/alkali metal cation complexes indicate the metal-ion selectivities of the lariat ethers. A series of dibenzo-16-crown-5 lariat ethers containing methoxy, carboxylic acid, ester, or amide pendant groups is studied in this fashion. A majority of these lariat ethers studied are found to be selective for Na+ vs either Li+ or K+ in methanolic solution. The selectivities obtained by the electrospray mass spectrometric method are compared with reported selectivities obtained by potentiometric methods with solvent polymeric membrane electrodes.

AB - The alkali metal ion selectivities of several dibenzo-16-crown-5 lariat ethers are investigated by electrospray ionization mass spectrometry (ESIMS). Specifically, the mass spectral peak intensities of lariat ether/alkali metal cation complexes obtained by electrospray ionization of solutions containing each lariat ether with lithium, sodium, and potassium salts are compared. The relative intensities of peaks for the lariat ether/alkali metal cation complexes indicate the metal-ion selectivities of the lariat ethers. A series of dibenzo-16-crown-5 lariat ethers containing methoxy, carboxylic acid, ester, or amide pendant groups is studied in this fashion. A majority of these lariat ethers studied are found to be selective for Na+ vs either Li+ or K+ in methanolic solution. The selectivities obtained by the electrospray mass spectrometric method are compared with reported selectivities obtained by potentiometric methods with solvent polymeric membrane electrodes.

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U2 - 10.1021/ac990236p

DO - 10.1021/ac990236p

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EP - 5500

JO - Analytical chemistry

JF - Analytical chemistry

IS - 24

ER -

Investigation of alkali metal cation selectivities of lariat ethers by electrospray ionization mass spectrometry

Abstract

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