spectrophotometer

DCA-Mln is a Fluorescent probe for ferric iron (Fe³⁺) detection. The probe works via an internal charge transfer (ICT) process from its diethylamino group to its dicyano group, which produces bright pink fluorescence in its unbound state; when Fe³⁺ is present, two molecules of DCA-Mln chelate with one Fe³⁺ ion, with one cyano group of each DCA-Mln participating in the complexation, and this binding triggers a photoinduced electron transfer (PET) process that provides a nonradiative deactivation pathway, resulting in fluorescence quenching; additionally, the probe exhibits a visible color change from purple to peach pink upon Fe³⁺ binding, enabling dual-channel detection. The probe has an excitation wavelength of 570 nm and an emission wavelength of 670 nm, and it shows a rapid response, with fluorescence stabilizing within 15 seconds of Fe³⁺ addition. DCA-Mln is cell-membrane-permeable, nontoxic at the imaging concentration of 10 μM, and can be used for Fe³⁺ detection in actual water samples, Fe³⁺ imaging in living cells, and as an anti-counterfeiting ink[1].

FITC-Alginate is a FITC (HY-66019)-labeled sodium alginate. FITC-Alginate acts as a fluorescent dye and probe, which enables the visualization of sodium alginate microspheres, microreservoirs, and sodium alginate-iron complexes via confocal microscopy, providing support for structural characterization, distribution analysis, and cell localization studies. The excitation/emission wavelengths of FITC-Alginate are 488 nm/~550 nm .

DiOC14 (3) (hydroxyethanesulfonate) is a water-soluble lipophilic carbocyanine green fluorescent membrane dye used as a fluorescent probe for living cell membranes and lipid bilayers. DiOC14 (3) (hydroxyethanesulfonate) acts as a lipophilic tracer that integrates into cell membranes, with its fluorescence generated upon membrane integration independent of enzymatic hydrolysis, pH, or membrane potential. The Ex/Em of DiOC14 (3) (hydroxyethanesulfonate) is 477/525 nm.