NDLI: Fluorescent sensing of <sup>99</sup>Tc pertechnetate in water

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Back cover

Chemical Science Vol - 5 Issue - 4

Chemical Science Vol - 5 Issue - 3

Chemical Science Vol - 5 Issue - 2

Chemical Science Vol -4

Chemical Science Vol -3

Chemical Science Vol -2

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Fluorescent sensing of ⁹⁹Tc pertechnetate in water

Content Provider	Royal Society of Chemistry (RSC)
Author	Bergamaschi, Greta Alberto, Roger Braband, Henrik Amendola, Valeria Boiocchi, Massimo
Copyright Year	2014
Abstract	The selective binding of 99Tc pertechnetate (99TcO4−) in water is a big challenge. Recently, our group reported on the p-xylyl aza-cryptand, as the first molecular receptor for 99TcO4− in aqueous solution. Here, we show that the introduction of a fluorescent unit in the azacryptand's framework leads to a new molecular system, able to selectively recognize and sense the pertechnetate anion at μM concentration. In water at pH 2, where the cage is in the hexaprotonated form, pertechnetate recognition is signalled by the quenching of the receptor's emission. Noticeably, environmentally ubiquitous anions, such as chloride, nitrate and sulfate do not interfere in the sensing, as they have no effect on our chemo-sensor's fluorescence. These unprecedented results are promising for the development of simple and smart devices for the recovery of 99TcO4− from contaminated aqueous solutions.
Starting Page	1820
Ending Page	1826
Page Count	7
File Format	HTM / HTML PDF
ISSN	20416520
Volume Number	5
Issue Number	5
Journal	Chemical Science
DOI	10.1039/c3sc53504e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Chloride Nitrate Pertechnetate PH Fluorescence Ion Sulfate
Content Type	Text
Resource Type	Article
Subject	Chemistry

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Fluorescent sensing of 99 Tc pertechnetate in water

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