2021
DOI: 10.1039/d1cp01203g
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Bicolour fluorescent molecular sensors for cations: design and experimental validation

Abstract: Molecular entities whose fluorescence spectra are different when they bind metal cations are termed bicolour fluorescent molecular sensors. The basic design criteria of this kind of compounds are presented and...

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Cited by 7 publications
(5 citation statements)
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“…By introducing 2,4-dihydroxybenzaldehyde as the recognition group into the moiety of a lactam screw ring [ 23 , 24 ], a near-infrared fluorescent probe, RCya for Pd 2+ , was synthesized, as shown in Scheme 1 . Structures of the intermediates were characterized by IR, 1 H NMR, and HRMS; their optical properties and the recognition mechanism of probe RCya were further confirmed by UV-Vis, HRMS, DFT, and fluorescence analyses.…”
Section: Methodsmentioning
confidence: 99%
“…By introducing 2,4-dihydroxybenzaldehyde as the recognition group into the moiety of a lactam screw ring [ 23 , 24 ], a near-infrared fluorescent probe, RCya for Pd 2+ , was synthesized, as shown in Scheme 1 . Structures of the intermediates were characterized by IR, 1 H NMR, and HRMS; their optical properties and the recognition mechanism of probe RCya were further confirmed by UV-Vis, HRMS, DFT, and fluorescence analyses.…”
Section: Methodsmentioning
confidence: 99%
“…Health and environmental problems may be caused by toxic metal ions, such as lead (Pb 2+ ), cadmium (Cd 2+ ) and Mercury (Hg 2+ ). Perturbation by their charge of π-electronic structure of organic dyes resulting in the appearance of intramolecular charge transfer (ICT) bands is the general principle of generation their λratiometric response [62,63]. The sensors based on formation of intramolecular and intermolecular excimer complexes or excited-state energy transfer between molecular fragments have also been developed.…”
Section: The Sensing and Imaging Of Ph And Ions In Biological Systemsmentioning
confidence: 99%
“…So that the influence of each physical parameter would be different part of content in each of the organized information channels. Currently, such direction is intensively developing in the aspect of two-channel, or ratiometric probes [4] , [5] , [6] . This is because most often in experiments scientist seeks to record the change of only single physical parameter at the probe location or the concentration of only single analyte in the object.…”
Section: Introductionmentioning
confidence: 99%
“…Thus, the bound ion or surrounding molecules have the possibility to further increase the dye polarization during the relaxation time in S 1 state and to shift the emission band down towards higher wavelengths, in special cases with small changes of fluorescence brightness. This corresponds to the Intramolecular Charge Transfer (ICT) effect [ 4 , 5 ]. A more polar solvent gives rise to a larger red shift.…”
Section: Introductionmentioning
confidence: 99%