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The Trace Detection of Nitrite Ions Using Neutral Red Functionalized SH-?-Cyclodextrin @Au Nanoparticles.

ABSTRACT: A novel fluorescence sensor of NR-?-CD@AuNPs was prepared for the trace detection of nitrite in quantities as low as 4.25 × 10-3 ?g?mL-1 in an aqueous medium. The fluorescence was due to the host-guest inclusion complexes between neutral red (NR) molecules and gold nanoparticles (AuNPs), which were modified by per-6-mercapto-beta-cyclodextrins (SH-?-CDs) as both a reducing agent and a stabilizer under microwave radiation. The color of the NR-?-CD@AuNPs changed in the presence of nitrite ions. A sensor was applied to the determination of trace nitrites in environmental water samples with satisfactory results.

SUBMITTER: Du X

PROVIDER: S-EPMC5877208 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature

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The Trace Detection of Nitrite Ions Using Neutral Red Functionalized SH-β-Cyclodextrin @Au Nanoparticles.

Du Xiaoyang X Zhang Xiaoxia X Jiang Chunlai C Zhang Weilu W Yang Lizhu L

Sensors (Basel, Switzerland) 20180225 3

A novel fluorescence sensor of NR-β-CD@AuNPs was prepared for the trace detection of nitrite in quantities as low as 4.25 × 10<sup>-3</sup> μg∙mL<sup>-1</sup> in an aqueous medium. The fluorescence was due to the host-guest inclusion complexes between neutral red (NR) molecules and gold nanoparticles (AuNPs), which were modified by per-6-mercapto-beta-cyclodextrins (SH-β-CDs) as both a reducing agent and a stabilizer under microwave radiation. The color of the NR-β-CD@AuNPs changed in the presen ...[more]

PMID: 29495331

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