PMID- 37286905
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20230718
LR  - 20230718
IS  - 1618-2650 (Electronic)
IS  - 1618-2642 (Linking)
VI  - 415
IP  - 19
DP  - 2023 Aug
TI  - Construction of an "ON-OFF" fluoroprobe using ionic liquids-modified orange 
      peel-based carbon quantum dots for selective/sensitive permanganate assay in 
      waters and the underlying quenching mechanisms.
PG  - 4753-4766
LID - 10.1007/s00216-023-04768-7 [doi]
AB  - Herein, we fabricated blue-fluorescence carbon quantum dots modified by ionic 
      liquids (ILs-CQDs) with a quantum yield of 18.13% by employing orange peel as a 
      carbon source and [BMIM][H(2)PO(4)] as a dopant. The fluorescence intensities 
      (FIs) of ILs-CQDs were significantly quenched upon the addition of MnO(4)(-) with 
      excellent selectivity and sensitivity in waters, and this phenomenon provided a 
      feasibility for constructing a sensitive "ON-OFF" fluoroprobe. The prominent 
      overlapping between the maximum excitation/emission of ILs-CQDs and the UV-Vis 
      absorption of MnO(4)(-) implied an inner filter effect (IFE). The higher K(q) 
      value demonstrated that the fluorescence-quenching phenomenon was a 
      static-quenching process (SQE). Coordination between MnO(4)(-) and 
      oxygen/amino-rich groups in ILs-CQDs resulted in the alteration of zeta potential 
      in the fluorescence system. Consequently, the interactions between MnO(4)(-) and 
      ILs-CQDs belong to a joint mechanism of IFE and SQE. When plotting the FIs of 
      ILs-CQDs vs. the concentrations of MnO(4)(-), a satisfactorily linear correlation 
      was obtained across the range of 0.3-100 muM with a detectable limit of 0.09 muM. 
      This fluoroprobe was successfully applied to detect MnO(4)(-) in environmental 
      waters with satisfactory recoveries of 98.05-103.75% and relative standard 
      deviations (RSDs) of 1.57-2.68%. Also, it gave more excellent performance metrics 
      as compared to the Chinese standard indirect iodometry method and other previous 
      approaches for MnO(4)(-) assay. Overall, these findings offer a new avenue to 
      engineer/develop a highly efficient fluoroprobe based on the combination of ILs 
      and biomass-derived CQDs for the rapid/sensitive detection of metal ions in 
      environmental waters.
CI  - (c) 2023. Springer-Verlag GmbH Germany, part of Springer Nature.
FAU - Sun, Yue
AU  - Sun Y
AD  - School of Environmental Science and Engineering, Suzhou University of Science and 
      Technology, Suzhou, 215009, China.
FAU - Ma, Su
AU  - Ma S
AD  - School of Chemistry and Life Science, Suzhou University of Science and 
      Technology, Suzhou, 215009, China.
FAU - Wang, Hanyu
AU  - Wang H
AD  - School of Environmental Science and Engineering, Suzhou University of Science and 
      Technology, Suzhou, 215009, China.
FAU - Wang, Huili
AU  - Wang H
AD  - School of Environmental Science and Engineering, Suzhou University of Science and 
      Technology, Suzhou, 215009, China.
FAU - Gao, Ming
AU  - Gao M
AD  - School of Environmental Science and Engineering, Suzhou University of Science and 
      Technology, Suzhou, 215009, China. gaoming@usts.edu.cn.
FAU - Wang, Xuedong
AU  - Wang X
AD  - School of Environmental Science and Engineering, Suzhou University of Science and 
      Technology, Suzhou, 215009, China. zjuwxd@163.com.
LA  - eng
GR  - 22076134/Natural Science Foundation of China/
GR  - 32202148/Natural Science Foundation of China/
GR  - BE2022733/Jiangsu Provincial Key R&D Project/
GR  - 2022SS24/Key Science & Technology Project of Suzhou City/
GR  - SS202028/Key Science & Technology Project of Suzhou City/
GR  - BK20211338/Jiangsu Provincial Natural Science Foundation/
PT  - Journal Article
DEP - 20230607
PL  - Germany
TA  - Anal Bioanal Chem
JT  - Analytical and bioanalytical chemistry
JID - 101134327
SB  - IM
OTO - NOTNLM
OT  - Ionic liquid doping
OT  - MnO4 -
OT  - Orange peel based-CQDs
OT  - Quenching by inner-filter effect and static process
OT  - "ON-OFF" fluoroprobe
EDAT- 2023/06/08 01:08
MHDA- 2023/06/08 01:09
CRDT- 2023/06/07 23:35
PHST- 2023/02/27 00:00 [received]
PHST- 2023/05/18 00:00 [accepted]
PHST- 2023/04/22 00:00 [revised]
PHST- 2023/06/08 01:09 [medline]
PHST- 2023/06/08 01:08 [pubmed]
PHST- 2023/06/07 23:35 [entrez]
AID - 10.1007/s00216-023-04768-7 [pii]
AID - 10.1007/s00216-023-04768-7 [doi]
PST - ppublish
SO  - Anal Bioanal Chem. 2023 Aug;415(19):4753-4766. doi: 10.1007/s00216-023-04768-7. 
      Epub 2023 Jun 7.