Innovative linkage sensor based on bimodal excitation behavior nitrogen doped carbon dots for ratiometric and visual detection of fluoride ion in food

Guo, Guoqiang1; Li, Tingting1; Wang, Yiru1; Li, Lintao1; Tang, Siyuan1,2; Hu, Houwen1; Jiang, Hai1; Chen, Da1

2023-10-01

10.1016/j.microc.2023.108991

MICROCHEMICAL JOURNAL   影响因子和分区

0026-265X

1095-9149

Fluoride ion (F-), particularly an important substance for growth, development and bone metabolism, is one of the essential micronutrients in living organisms. Therefore, F- detection becomes one of the main problems that need to be addressed in ordinary living. Herein, an innovative bimodal excitation-based nitrogen-doped carbon dots (N-CDs) for ratiometric detection of fluoride ion (F-) is developed by multistage response to curcumin and F- based on the localization of inner filter effect (L-IFE). Primarily, curcumin decreases the N-CDs fluorescence due to fluorescence resonance energy transfer. Subsequently, the cascade addition of F- changes the absorption band from 526 to 418 nm due to the generation of curcumin-F- complex. Thus, the L-IFE occurs, and uneven overlap between the curcumin-F- complex absorption and N-CDs excitation leads to the inverse variation in fluorescence signals under the illumination of 399 nm and 470 nm. This multistage sensing system exhibits excellent sensitivity toward F-, with a linear range from 0 to 50 & mu;M and a low detection limit of 57 nM. Moreover, a smart-integrated sensing platform is designed for visual F- detection in practical samples. Thus, our work provides a novel guidance for F- detection in food environment.

Bimodal excitation ratiometric sensing Linkage sensor The localized inner filter effect Fluoride ion Smart-integrated sensing system

SCI

英语

其他

null[61604084]

Chemistry

Chemistry, Analytical

WOS:001055834300001

ELSEVIER

CHEMISTRY

Web of Science

1.Ningbo Univ, Sch Phys Sci & Technol, Dept Microelect Sci & Engn, Ningbo 315211, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen Key Lab Full Spectral Solar Elect Generat, Shenzhen 518055, Peoples R China

Guo, Guoqiang,Li, Tingting,Wang, Yiru,et al. Innovative linkage sensor based on bimodal excitation behavior nitrogen doped carbon dots for ratiometric and visual detection of fluoride ion in food[J]. MICROCHEMICAL JOURNAL,2023,193.

Guo, Guoqiang.,Li, Tingting.,Wang, Yiru.,Li, Lintao.,Tang, Siyuan.,...&Chen, Da.(2023).Innovative linkage sensor based on bimodal excitation behavior nitrogen doped carbon dots for ratiometric and visual detection of fluoride ion in food.MICROCHEMICAL JOURNAL,193.

Guo, Guoqiang,et al."Innovative linkage sensor based on bimodal excitation behavior nitrogen doped carbon dots for ratiometric and visual detection of fluoride ion in food".MICROCHEMICAL JOURNAL 193(2023).