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Spectrochim Acta A Mol Biomol Spectrosc ; 317: 124407, 2024 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-38723466

RESUMO

Copper is one of the common among the heavy metal pollution in Chinese herbal medicine (CHM). So, it is essential to develop rapid and accurate testing method to quantify the Cu2+ content in CHM. Herein, we prepared a coordination-based near-infrared fluorescent probe (NRh6G-FA) by introducing a hemicyanine dye in rhodamine 6G scaffold. NRh6G-FA had a high sensitivity, anti-interference performance, fast response (within 60 s), visualization (from light yellow to green) for Cu2+ and excellent sensing performance for the detection of Cu2+ at low concentrations (LOD = 0.225 µM). The most likely mechanism was verified on the basis of Job's plot, ESI-HRMS and DFT calculations. NRh6G-FA could be successfully applied for the detection and "naked eye" recognition of Cu2+ in CHM samples. Moreover, NRh6G-FA was used to visualize Cu2+ in living MCF-7 cells by confocal fluorescence imaging.


Assuntos
Cobre , Medicamentos de Ervas Chinesas , Corantes Fluorescentes , Corantes Fluorescentes/química , Corantes Fluorescentes/síntese química , Cobre/análise , Humanos , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/análise , Células MCF-7 , Rodaminas/química , Imagem Óptica , Espectrometria de Fluorescência/métodos , Limite de Detecção
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