期刊
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
卷 234, 期 -, 页码 115-122出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2012.01.006
关键词
Microfluidic; Fluorescence; Sensor; Lead; Grafting
资金
- European STREP
A calixarene bearing three dansyl groups and one long alkyl chain terminated by an alcohol function (Calix-DANS3-OH) has been synthesised. The photophysical and complexing properties of this new molecular fluorescent sensor are reported and show that Calix-DANS3-OH is able to selectively detect lead ion. In order to develop a portable sensor, calix-DANS3-OH was grafted on the wall of a PDMS microfluidic device. A fluorescence quenching has been observed upon Pb2+ complexation leading to detect low amounts of Pb2+. A detection limit of 2 x 10(-7) mol L-1 (42 ppb) has been determined. (c) 2012 Elsevier B.V. All rights reserved.
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