Binary metal oxide stannate (MSnO; M = Zn, Mn, Co, etc.) structures, with their high theoretical capacity, superior lithium storage mechanism and suitable operating voltage, as well as their dual suitability for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs), are strong candidates for next-generation anode materials. However, the capacity deterioration caused by the severe volume expansion problem during the insertion/extraction of lithium or sodium ions during cycling of MSnO-based anode materials is difficult to avoid, which greatly affects their practical applications.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
March 2020
Chem Commun (Camb)
September 2017
Two fluorescein-based chemosensors have been developed. They exhibited rapid and selective detection of 2,4,6-trinitrophenol (TNP) via fluorescence quenching both in ethanol and water solution when excited by visible light.
View Article and Find Full Text PDFRelay recognition of copper(ii) ions and biothiols via a fluorescence "on-off-on" cascade was designed and realized as a new sequential combination of cations and small molecules. Probe 1 bearing a fluorescein skeleton was thus synthesized, which performed well in 100% HEPES buffer (pH = 7.0) solution, as a highly sensitive, selective fluorescence sensor for Cu.
View Article and Find Full Text PDFA dual mode fluorescent probe, which is based on an integration of fluorescein and coumarin fluorophores, was developed for the discrimination of Cys from Hcy and GSH. This probe (2) shows the advantage of quick reaction (5 min) with Cys, resulting in a strong fluorescence turn-on response when excited at 450 nm. Notably, it also demonstrates the ratiometric fluorescence property while excited by a shorter wavelength (332 nm).
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