These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: A novel colorimetric and "turn-off" fluorescent probe based on catalyzed hydrolysis reaction for detection of Cu2+ in real water and in living cells.
    Author: Liu YL, Yang L, Li P, Li SJ, Li L, Pang XX, Ye F, Fu Y.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2020 Feb 15; 227():117540. PubMed ID: 31680040.
    Abstract:
    A novel and highly selective fluorescent 1,8-naphthalimide-based probe, 3, was designed and synthesized for rapid Cu2+ detection in a CH3CN-H2O (3:1, v/v, pH = 7.4) solution by means of a distinct hydrolysis mechanism via its Cu2+-promoting feature. Upon treatment with Cu2+, the fluorescence response of probe 3 at 550 nm abruptly decreased, which was visible to the naked eye, and this response was accompanied by a clear change of the color of the solution; the color changed from the original yellow color to colorless. This color change occurred due to the Cu2+-promoted hydrolysis of 3, which yielded a fluorescence-quenched product. It is inspiring that probe 3 exhibited excellent sensitivity, a short response time and strong anti-interference recognition. Compared with the allowable amount of Cu2+ (∼20 μM) in drinking water, the detection limit of 3 for Cu2+ is calculated to be 9.15 nM, which is much lower than the amount defined by standards. The probe can be successfully applied for the determination of Cu2+ in real aqueous samples. Furthermore, probe 3 can be used as a fluorescent sensor to detect Cu2+ in biological environments, demonstrating its low toxicity to organisms and good cell permeability in live cell imaging.
    [Abstract] [Full Text] [Related] [New Search]