Dual-modal fluorescence and light-scattering sensor based on water-soluble carbon dots for silver ions detection
作者： Guoliang Liu , Chenglei Xuan , Da-Qian Feng , Dongliang Hua , Tianhao Liu
DOI: 10.1039/C7AY01873H
关键词:
摘要: A facile fluorometric and light-scattering dual-modal nanosensor for silver(I) ions detection was established based on target-responsive aggregation of carbon dots/cysteine system. The synthesized water-soluble fluorescent dots (CDs) by the one-pot hydrothermal method exhibited emissions peak at 441 nm under excitation 352 nm. CDs fluorescence quenched Ag+via electron transfer, while intensity significantly enhanced, providing a means analyte Ag+ detection. relative is directly proportional to concentration between 0.1 μM 265 μM, limit 50 nM. Moreover, from 10 4000 nM with 2 Common compounds including different types metal had no significant interference in mode. new simple, rapid sensitive applied real water samples satisfactory results. present CDs-based sensor provided promising platform environmental sensing applications.
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