Fluoride sensing by catechol-based pi-electron systems

An, Byeong-Kwan, Wang, Xin, Burn, Paul L. and Meredith, Paul (2010) Fluoride sensing by catechol-based pi-electron systems. ChemPhysChem, 11 16: 3517-3521. doi:10.1002/cphc.201000582


Author An, Byeong-Kwan
Wang, Xin
Burn, Paul L.
Meredith, Paul
Title Fluoride sensing by catechol-based pi-electron systems
Formatted title
Fluoride sensing by catechol-based ∏-electron systems
Journal name ChemPhysChem   Check publisher's open access policy
ISSN 1439-4235
1439-7641
Publication date 2010-11
Sub-type Article (original research)
DOI 10.1002/cphc.201000582
Volume 11
Issue 16
Start page 3517
End page 3521
Total pages 5
Place of publication Weinheim, Germany
Publisher Wiley - V C H Verlag
Collection year 2011
Language eng
Formatted abstract
We have developed new catechol-based sensors that can detect fluoride via fluorescence or optical absorption even in the presence of other halides. The level and sensitivity of detection of the sensing molecules is dependent on the chromophore length, which is controlled by the number of thiophene units (one to three) within the chromophore. The sensor with three thiophene units, (E)-2-(2,2′-terthiophen-5-yl)-3-(3,4-dihydroxyphenyl)acrylonitrile, gives the best response to fluoride. By using fluorescence measurements fluoride is detectable over the concentration range 1.7 μM to 200 μM. Importantly, when adsorbed onto a solid support the fluorescent catechol dye can be used to detect the presence of fluoride in aqueous solution.Selectivity: Catechol-based sensors detect fluoride selectively via fluorescence or optical absorption. The sensitivity of detection is dependent on the chromophore length and fluoride can be sensed over the concentration range 1.7-200 μm (see figure). The catechol dye can detect fluoride in aqueous solution when adsorbed onto a solid support. Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Keyword Cathechol dyes
Dyes/ligments
Fluorescence
Sensors
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Sun, 09 Jan 2011, 00:10:03 EST