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Cited by 253

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Catalytic Signal Amplification Using a Heck Reaction. An Example in the Fluorescence Sensing of Cu(II)

Wu, Qiaoyin, Anslyn, Eric V.·2004·Journal of the American Chemical Society

Abstract

Catalytic signal enhancement using an organometallic reaction is demonstrated. The reactivity of a Heck cross-coupling reaction that creates a fluorophore is modulated by the addition of a polyazacyclam inhibitor. The inhibitor will complex with Cu(II), which restores the activity of the Pd(II). The addition of Cu(II) therefore leads to the generation of fluorescence, thereby creating a very sensitive assay for Cu(II). The rate of the Heck reaction is followed by monitoring emission as a function of time. The rate is proportional to the Cu(II) concentration and correlates to the affinity of the inhibitor to various metals. This strategy represents a general technique that can be exploited with other catalytic organometallic reactions.

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Metadata

Authors
Wu, Q., & Anslyn, E. V.
Venue
Journal of the American Chemical Society
Published
2004-10-26
Volume
126
Issue
45
Pages
14682-14683
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2078154796
Cited by
253
References
1
FWCI
5.51
Type
journal article
Language
en
Open access
closed

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