Dual role of BSA for synthesis of MnO₂nanoparticles and their mediated fluorescent turn-on probe for glutathione determination and cancer cell recognition

Abstract

Scheme of the MnO2 NP-mediated fluorescence turn-off-on process of CDs with MnO2 NPs and GSH.

Tunable multicolour S/N co‐doped carbon quantum dots synthesized from waste foam and application to detection of Cr3+ ions

“…CQDs have the potential to replace traditional semiconductor quantum dots due to their excellent properties such as low toxicity, good biocompatibility, a bright and stable fluorescence, and controllable emission spectrum. [5][6][7][8] These properties allow CQDs extensive application in photocatalysis [9] , cell imaging [10,11] , optical sensor [12] , catalysis [13] , fluorescent inks [14] , ion detection [15] , and small molecule detection. [16,17] Various synthesis methods have been reported for preparing fluorescent CQDs, including acidic oxidation [18] , electrochemical synthesis [19] , and microwave, ultrasonic [20,21] , and hydrothermal methods [22] , laser ablation [23] , hot injection, and pyrolysis.…”

A rational design of a cancer-specific and lysosome-targeted fluorescence nanoprobe for glutathione imaging in living cells

“…Notably, various literatures indicated that the content of GSH in cancer cells was about 1000-fold more than that of cysteine (Cys) or homocysteine (Hcy). [62][63][64] In view of these reports, a contrast experiment on the fluorescence intensity ratio (F/F 0 ) was conducted between GSH, Cys and Hcy. As exhibited in Fig.…”

A facile synthesis of multifunctional carbon dots as fluorescence ‘turn on’ and ‘turn off’ probes for selective detection of Al3+ and 2,4,6‐trinitrophenol

“…SQE is a + , indicating that formation of the complexes affected the surface defect state of the CDs, and energy transfer may occur between them, therefore affecting luminescence properties. [46,47] To verify this specific mechanism, we conducted the following experiment. LQ as an important derivative of 8-hydroxyquinoline was dissolved in BR buffer solution at the same concentration as the CDs (0.5 mg/ml), and the PL response of LQ to Al 3+ was tested under the same conditions.…”