In:
Luminescence, Wiley, Vol. 33, No. 1 ( 2018-02), p. 138-144
Abstract:
An redox luminescence switch was developed for the sensing of glutathione (GSH), l ‐cysteine (Cys) or l ‐ascorbic acid (AA) based on redox reaction. The Mn 2+ ‐doped NaYF 4 :Yb,Er upconversion nanorods (UCNRs) with an emission peak located in the red region were synthesized. The luminescence intensity of the UCNRs could be quenched due to the Mn 2+ could be oxidized to MnO 2 by KMnO 4 . Subsequently, when the AA, GSH or Cys was added into the MnO 2 modified upconversion nanosystem, which could reduced MnO 2 to Mn 2+ and the luminescence intensity was recovered. The concentration ranges of the nanosystem are 0.500–3.375 mM (R 2 = 0.99) for AA, 0.6250–11.88 mM (R 2 = 0.99) for GSH and 0.6250–9.375 mM (R 2 = 0.99) for Cys, respectively.
Type of Medium:
Online Resource
ISSN:
1522-7235
,
1522-7243
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
2001819-8
SSG:
12
