Fluorescent studies of salicylaldehyde and other related carbonyl compounds for the selective and sensitive detection of Zinc(II) ions in aqueous solution

Soleiman Hisaindee; Osama Zahid; Mohammed A. Meetani; John Graham

doi:10.1007/s10895-011-1003-3

Fluorescent studies of salicylaldehyde and other related carbonyl compounds for the selective and sensitive detection of Zinc(II) ions in aqueous solution

Soleiman Hisaindee, Osama Zahid, Mohammed A. Meetani, John Graham

Department of Chemistry

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

14 Citations (Scopus)

Abstract

Salicylaldehyde was found to have a high selectivity for zinc ions with simultaneous enhancement of fluorescence in aqueous buffer solution at optimum pH 8.5. The stoichiometry of the complex was determined to be 1:1 with a Ka value of 3.4×10 ⁴ M ^-1 at 298 K. The fluorescence of the complex is not affected by common anions and Zn ²⁺ binds preferentially to salicylaldehyde in the presence of alkali, alkaline earth and heavy metal cations (Hg ²⁺, Cd ²⁺, Cr ³⁺ and Ni ²⁺). This property is not observed with related phenolic compounds bearing a carbonyl group such as esters, amides, carboxylic acids and ketones.

Original language	English
Pages (from-to)	677-683
Number of pages	7
Journal	Journal of Fluorescence
Volume	22
Issue number	2
DOIs	https://doi.org/10.1007/s10895-011-1003-3
Publication status	Published - Mar 2012

Keywords

Fluorescence
Metal ions
Salicylaldehyde
Selectivity
Zinc

ASJC Scopus subject areas

Biochemistry
Clinical Psychology
Social Sciences (miscellaneous)
Sociology and Political Science
Spectroscopy
Clinical Biochemistry
Law

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title = "Fluorescent studies of salicylaldehyde and other related carbonyl compounds for the selective and sensitive detection of Zinc(II) ions in aqueous solution",

abstract = "Salicylaldehyde was found to have a high selectivity for zinc ions with simultaneous enhancement of fluorescence in aqueous buffer solution at optimum pH 8.5. The stoichiometry of the complex was determined to be 1:1 with a Ka value of 3.4×10 4 M -1 at 298 K. The fluorescence of the complex is not affected by common anions and Zn 2+ binds preferentially to salicylaldehyde in the presence of alkali, alkaline earth and heavy metal cations (Hg 2+, Cd 2+, Cr 3+ and Ni 2+). This property is not observed with related phenolic compounds bearing a carbonyl group such as esters, amides, carboxylic acids and ketones.",

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T1 - Fluorescent studies of salicylaldehyde and other related carbonyl compounds for the selective and sensitive detection of Zinc(II) ions in aqueous solution

AU - Hisaindee, Soleiman

AU - Zahid, Osama

AU - Meetani, Mohammed A.

AU - Graham, John

PY - 2012/3

Y1 - 2012/3

N2 - Salicylaldehyde was found to have a high selectivity for zinc ions with simultaneous enhancement of fluorescence in aqueous buffer solution at optimum pH 8.5. The stoichiometry of the complex was determined to be 1:1 with a Ka value of 3.4×10 4 M -1 at 298 K. The fluorescence of the complex is not affected by common anions and Zn 2+ binds preferentially to salicylaldehyde in the presence of alkali, alkaline earth and heavy metal cations (Hg 2+, Cd 2+, Cr 3+ and Ni 2+). This property is not observed with related phenolic compounds bearing a carbonyl group such as esters, amides, carboxylic acids and ketones.

AB - Salicylaldehyde was found to have a high selectivity for zinc ions with simultaneous enhancement of fluorescence in aqueous buffer solution at optimum pH 8.5. The stoichiometry of the complex was determined to be 1:1 with a Ka value of 3.4×10 4 M -1 at 298 K. The fluorescence of the complex is not affected by common anions and Zn 2+ binds preferentially to salicylaldehyde in the presence of alkali, alkaline earth and heavy metal cations (Hg 2+, Cd 2+, Cr 3+ and Ni 2+). This property is not observed with related phenolic compounds bearing a carbonyl group such as esters, amides, carboxylic acids and ketones.

KW - Fluorescence

KW - Metal ions

KW - Salicylaldehyde

KW - Selectivity

KW - Zinc

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Fluorescent studies of salicylaldehyde and other related carbonyl compounds for the selective and sensitive detection of Zinc(II) ions in aqueous solution

Abstract

Keywords

ASJC Scopus subject areas

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