Eosin B performs just as well as Eosin Y, sometimes for a more vibrant red.
Eosin is a class of fluorescent red dyes. It is an artificial derivative of fluorescein and consists of two closely related compounds, eosin Y and eosin B. Eosin Y is more commonly used. It is a tetrabromo derivative of fluorescein and is slightly yellow (hence the name eosin yellow).
Yu and Fugetsu [108] developed a novel adsorbent by inserting MWCNTs into the cavities of dolomite for removal of ethidium bromide, acridine orange, methylene blue, eosin B and eosin Y from wastewater dye.
Ding et al studied the interaction of the anthraquinone dye Alizarin Red S (ARS), the anionic dye C.I. Acid Green 1 (AG1), and the fluorescein dye Eosin B (EB) with HSA. [132], Yue et al. [133] and Yang et al. [134] due to their biomarker applications. ARS and AG1 quenched the intrinsic fluorescence of HSA without any change in the emission maximum; whereas EB quenched the fluorescence with a blue shift of the emission maximum. All of these dyes quench the fluorescence of HSA by forming a non-fluorescent ground-state complex.
Wang et al. A photoredox process was proposed in 2017, initiated by visible light in the presence of eosin B, to form structure 9 under mild conditions in good to excellent yields (Table 1, entry 5). 10 Sulfinic acid was used as a sulfinylating reagent. The proposed mechanism involves a cascade of radical formation until the formation of thiol radicals (R single bonds S•) that can add up to form heterocycles. More recently, Braga et al. describe the use of electrophilic disulfides or diselenides under solvent-free conditions (a, 11) in the presence of minimal solvent (b, 12) or under photocatalytic conditions (c, 13) to obtain sulfonylated or Selenide derivatives 9 in good to excellent yields (Table 1, entry 6). Other selenization conditions were reported using PhSeSePh and catalytic N-iodosuccinimide and tert-butyl hydroperoxide as oxidizing agents. 14 S-Phenylbenzenethiosulfonate is also used in water at 120 °C as an odorless vulcanizing agent (Table 1, entry 7).15
Yu and Fugetsu [108] developed a novel adsorbent by inserting MWCNTs into the cavities of dolomite for scavenging of ethidium bromide, acridine orange, methylene blue, eosin B, and eosin Y dyes from wastewater. Polyurethane polymer was used as binder to produce the foam line CNTs/dolomite adsorbent. Adsorptions reached equilibrium within 30 min for the cationic dyes, acridine orange, ethidium bromide, and methylene blue while it was about 60 min for the anionic dyes, eosin B and eosin Y. The maximum adsorption of all studied dyes is reported in Table 3. Foam like ternary composite PUF/diatomite/dispersed-MWCNTs, gave the highest capacities for adsorption of these dyes, followed by PUF/agglomerated-MWCNTs, and then PUF/dispersed-MWCNTs. Langmuir adsorption isotherm was best fitted to the equilibrium