A novel fluorescent probe with large Stokes shift for the detection of Ag+ and Hg2+

A Fluorescent Probe for Hg2+ Specific Recognition Based on Xanthene and its Application in Food Detection and Cell Imaging

“…3b, there has a good linear relationship between them, and the linear regression equation is Y = -40.17401 X + 2304.52099 and the linear determination coe cient is R 2 = 0.99047. According to the detection limit calculation formula: LOD = 3σ/k (where σ is the standard deviation of the blank measurement, and k is the slope) [31] , the detection limits of the probe NXH for Hg 2+ was determined to be 96.3 nM. To sum up, the uorescent probe NXH has high sensitivity for the detection of Hg 2+ .…”

A novel near‐infrared fluorescent and colorimetric probe for selective detection of Ag+ and Hg2+

“…The phenyl thionocarbonate moiety serves the recognition site and when Ag + /Hg 2+ is added the N-FP can be hydrolysed to induce remarkable fluorescence enhancement and colour change. 64 Owing to the ICT effect, this fluorophore exhibits long-wavelength red emission. These characteristics enable the probe to have a large Stokes shift, good selectivity, and low detection limits.…”

“…Dicyanoisophorone as a strong electron‐withdrawing group and diethylamino as an electron donor were introduced into the NIR fluorescent probe (N‐FP) to achieve large Stokes shift, strong luminescence and ICT effect, and the emission wavelength in NIR region. The phenyl thionocarbonate moiety serves the recognition site and when Ag + /Hg 2+ is added the N‐FP can be hydrolysed to induce remarkable fluorescence enhancement and colour change 64 . Owing to the ICT effect, this fluorophore exhibits long‐wavelength red emission.…”

Simultaneous detection of mercury and cadmium ions: A colorimetric method in aqueous media

“…Although a variety of chemosensors for Hg and Cd ions were developed based on small molecules [ 30 , 31 ], bio-molecules [ 32 , 33 ], polymers [ 34 , 35 ], and nanoparticles [ 36 ], most of them rely on fluorescence enhancement (turn-on) or quenching (turn-off) approaches; and it is highly desirable to design novel colorimetric sensors for simple, low-cost, and naked-eye detection of these ions without resort to any spectroscopic equipment. Therefore, the design and synthesis of colorimetric chemosensors for simultaneous detection of Hg and Cd ions are of interest [ [37] , [38] , [39] , [40] ].…”