LI, Na; ZHAO, Pengxiang; LIU, Na; ECHEVERRIA, María; MOYA, Sergio; SALMON, Lionel; RUIZ, Jaime; ASTRUC, Didier

doi:10.1002/chem.201402652

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LI, Na
Institut des Sciences Moléculaires [ISM]

ZHAO, Pengxiang
Science and Technology on Surface Physics and Chemistry Laboratory

LIU, Na
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Chemistry - A European Journal. 2014, vol. 20, n° 27, p. 8363-8369

Wiley-VCH Verlag

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A large family of bifunctional 1,2,3-triazole derivatives that contain both a polyethylene glycol (PEG) chain and another functional fragment (e.g., a polymer, dendron, alcohol, carboxylic acid, allyl, fluorescence dye, redox-robust metal complex, or a β-cyclodextrin unit) has been synthesized by facile "click" chemistry and mildly coordinated to nanogold particles, thus providing stable water-soluble gold nanoparticles (AuNPs) in the size range 3.0-11.2 nm with various properties and applications. In particular, the sensing properties of these AuNPs are illustrated through the detection of an analogue of a warfare agent (i.e., sulfur mustard) by means of a fluorescence "turn-on" assay, and the catalytic activity of the smallest triazole-AuNPs (core of 3.0 nm) is excellent for the reduction of 4-nitrophenol in water.< Réduire

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"Click" chemistry mildly stabilizes bifunctional gold nanoparticles for sensing and catalysis.

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