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An inner-filter-effect based ratiometric fluorescent sensor for the detection of uranyl ions in real samples.
Nan, Hua-Rui; Liu, Yun-Hai; Gong, Wen-Juan; Peng, Hong-Bo; Wang, You-Qun; Zhang, Zhi-Bin; Cao, Xiao-Hong.
Afiliação
  • Nan HR; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, Jiangxi, China. yhliu@ecut.edu.cn.
  • Liu YH; Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, Nanchang, Jiangxi 330013, P. R. China.
  • Gong WJ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, Jiangxi, China. yhliu@ecut.edu.cn.
  • Peng HB; Engineering Research Center of Nuclear Technology Application, East China University of Technology, Nanchang 330013, Jiangxi, China.
  • Wang YQ; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, Jiangxi, China. yhliu@ecut.edu.cn.
  • Zhang ZB; Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, Nanchang, Jiangxi 330013, P. R. China.
  • Cao XH; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, Jiangxi, China. yhliu@ecut.edu.cn.
Anal Methods ; 14(5): 532-540, 2022 02 03.
Article em En | MEDLINE | ID: mdl-35043798
In this work, a ratiometric fluorescence system was designed for the detection of trace UO22+ in water based on the inner filter effect (IFE) between gold nanoparticles (AuNPs) and gold nanoclusters (AuNCs). IFE-induced fluorescence quenching was achieved due to the enhanced complementary overlap between the absorption spectra of AuNPs and the emission spectrum of AuNCs after the addition of UO22+. Blue carbon dots (B-CDs) were added to serve as reference fluorophores to expand the color tonality and make human eye recognition easier. The ratiometric fluorescent sensor demonstrated a unique fluorescence color change from red to blue when different doses of UO22+ were added, with a detection limit of 8.4 nM. Furthermore, the ratiometric fluorescent sensor was effectively used for UO22+ determination in real-world water samples, with acceptable recoveries.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Nanopartículas Metálicas / Ouro Tipo de estudo: Diagnostic_studies Limite: Humans Idioma: En Revista: Anal Methods Ano de publicação: 2022 Tipo de documento: Article País de afiliação: China

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Nanopartículas Metálicas / Ouro Tipo de estudo: Diagnostic_studies Limite: Humans Idioma: En Revista: Anal Methods Ano de publicação: 2022 Tipo de documento: Article País de afiliação: China