Colorimetric Sensors: Hydrogen-Terminated Si Nanowires as Label-Free Colorimetric Sensors in the Ultrasensitive and Highly Selective Detection of Fluoride Anions in Pure Water Phase----Technical Institute of Physics and Chemistry

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Colorimetric Sensors: Hydrogen-Terminated Si Nanowires as Label-Free Colorimetric Sensors in the Ultrasensitive and Highly Selective Detection of Fluoride Anions in Pure Water Phase

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2015-03-17

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The detection of anions in water phase with colorimetric sensors is a long standing academic challenge. The work by X. Zhang and team on page 1506 detects F⁻¹ in pure water phase by taking advantage of the strong specific binding between F and Si, as well as the color change property of Si nanowires. It shows ultra-sensitivity, high selectivity, and good stability.

Adv. Funct. Mater. , 2015