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Reed-derived fluorescent carbon dots as highly selective probes for detecting Fe3+ and excellent cell-imaging agents.
Wei, Guili; Zhao, Ziqiang; Du, Jie; Li, Pan; Sun, Zhuxing; Huo, Li; Gao, Yongjun.
Afiliação
  • Wei G; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Environmental Science, Hebei University Baoding 071002 Hebei China huolichenchen@sina.com yjgao@hbu.edu.cn.
  • Zhao Z; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Environmental Science, Hebei University Baoding 071002 Hebei China huolichenchen@sina.com yjgao@hbu.edu.cn.
  • Du J; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Environmental Science, Hebei University Baoding 071002 Hebei China huolichenchen@sina.com yjgao@hbu.edu.cn.
  • Li P; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Environmental Science, Hebei University Baoding 071002 Hebei China huolichenchen@sina.com yjgao@hbu.edu.cn.
  • Sun Z; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Environmental Science, Hebei University Baoding 071002 Hebei China huolichenchen@sina.com yjgao@hbu.edu.cn.
  • Huo L; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Environmental Science, Hebei University Baoding 071002 Hebei China huolichenchen@sina.com yjgao@hbu.edu.cn.
  • Gao Y; Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Environmental Science, Hebei University Baoding 071002 Hebei China huolichenchen@sina.com yjgao@hbu.edu.cn.
RSC Adv ; 9(38): 21715-21723, 2019 Jul 11.
Article em En | MEDLINE | ID: mdl-35518891
ABSTRACT
A kind of highly selective and sensitive fluorescent probe for detecting Fe3+, carbon dots (CDs), was prepared with renewable reed naturally containing C, N, O, and S elements as a green and eco-friendly carbon source by a simple hydrothermal process. The fluorescence of CDs without purification and surface modification can be quenched by Fe3+ in a wide concentration range of 0 to 362 µmol L-1 (concentration of Fe3+), with detection limits as low as 0.014 µmol L-1 in 0-50 µmol L-1. Characterizations, such as TEM, XPS, Raman and FTIR, confirmed that the static quenching mechanism involved the generation of non-luminescent complexes between Fe3+ and functional groups (carboxyl group, sulfur-oxyl group and hydroxyl group) on the surface of CDs and with the aggregation of CDs. More importantly, CDs had good biocompatibility and nontoxicity according to an MTT cell-viability assay, and cells labeled with CDs emitted blue, green and red color fluorescence. Thus, the static quenching mechanism was confirmed. So, this reed-derived natural CD solution can be utilized in detecting Fe3+, culture cells, and cell imaging.

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article