![Spectral characterization of a newly synthesized fluorescent semicarbazone derivative and its usage as a selective fiber optic sensor for copper(II) [An article from: Analytica Chimica Acta]](https://www.ebooknetworking.net/books/B00/0PD/bigB000PDSUUY.jpg)
Spectral characterization of a newly synthesized fluorescent semicarbazone derivative and its usage as a selective fiber optic sensor for copper(II) [An article from: Analytica Chimica Acta]
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PublisherElsevier
ISBN / ASINB000PDSUUY
ISBN-13978B000PDSUU2
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Description
This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
In this work photoluminescent properties of highly Cu^2^+ selective organic fluoroionophore, semicarbazone derivative; bis(naphtho[2,1-b]furan-2-yl)methanone semicarbazone (BNF) was investigated in different solvents (dichloromethane, tetrahydrofuran, toluene and ethanol) and in polymer matrices of polyvinylchloride (PVC) and ethyl cellulose (EC) by absorption and emission spectrometry. The BNF derivative displayed enhanced fluorescence emission quantum yield, Q"f=6.1x10^-^2 and molar extinction coefficient, @?=29,000+/-65cm^-^1M^-^1 in immobilized PVC matrix, compared to 2.6x10^-^3 and 24,573+/-115 in ethanol solution. The offered sensor exhibited remarkable fluorescence intensity quenching upon exposure to Cu^2^+ ions at pH 4.0 in the concentration range of 1.0x10^-^9 to 3.0x10^-^4M [Cu^2^+] while the effects of the responding ions (Ca^2^+, Hg^+, Pb^2^+, Al^3^+, Cr^3^+, Mn^2^+, Mg^2^+, Sn^2^+, Cd^2^+, Co^2^+ and Ni^2^+) were less pronounced.
Description:
In this work photoluminescent properties of highly Cu^2^+ selective organic fluoroionophore, semicarbazone derivative; bis(naphtho[2,1-b]furan-2-yl)methanone semicarbazone (BNF) was investigated in different solvents (dichloromethane, tetrahydrofuran, toluene and ethanol) and in polymer matrices of polyvinylchloride (PVC) and ethyl cellulose (EC) by absorption and emission spectrometry. The BNF derivative displayed enhanced fluorescence emission quantum yield, Q"f=6.1x10^-^2 and molar extinction coefficient, @?=29,000+/-65cm^-^1M^-^1 in immobilized PVC matrix, compared to 2.6x10^-^3 and 24,573+/-115 in ethanol solution. The offered sensor exhibited remarkable fluorescence intensity quenching upon exposure to Cu^2^+ ions at pH 4.0 in the concentration range of 1.0x10^-^9 to 3.0x10^-^4M [Cu^2^+] while the effects of the responding ions (Ca^2^+, Hg^+, Pb^2^+, Al^3^+, Cr^3^+, Mn^2^+, Mg^2^+, Sn^2^+, Cd^2^+, Co^2^+ and Ni^2^+) were less pronounced.
