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Relevant academic research and scientific papers

Lysosome targeting fluorescence probe for imaging intracellular thiols

A BODIPY-based fluorescence turn-on probe, exhibiting high selectivity and sensitivity towards intracellular thiols with excellent lysosomal localization is reported. The probe displayed fast response towards biothiols in aqueous solution. Localization of the probe in lysosome was demonstrated by intracellular colocalization studies with the aid of LysoSensor Green.

O-Annulation to Polycyclic Aromatic Hydrocarbons: A Tale of Optoelectronic Properties from Five- To Seven-Membered Rings

We take advantage of the Pummerer oxidative annulation reaction to extend PAHs through the formation of an intramolecular C-O bond with a suitable phenol substituent. Depending on the peripheral topology of the PAH precursor (e.g., pyrene, boron-dipyrromethene, or perylene diimide) five-, six-, and seven-membered O-containing rings could be obtained. The effect of the O-annulations on the optoelectronic properties were studied by various methods with the pyrano-annulated pyrene and BODIPY derivatives depicting quantitative emission quantum yields.

Physicochemical and computational insight of 19F NMR and emission properties of: Meso -(o -aryl)-BODIPYs

A series of electronic and physicochemical parameters were explored to determine their effect on experimental spectroscopic and photophysical data. Through a systematic obtention of a series of meso-(o-aryl)-BODIPYs, 19F NMR spectra were analyzed and thei

Rationally Designed Fluorescent pH Sensors for Measurements in Extremely Alkaline Media

We investigated the pKa increasing effects on meso-phenol BODIPY to achieve fluorescent pH sensors working in extreme alkalinity. We demonstrated the effects of substituents on meso, α, γ and position of the hydroxyl group on pKa. By

Green synthesis of dipyrromethanes in aqueous media catalyzed by SO3H-functionalized ionic liquid

A mild, efficient and metal-free method was described for the green synthesis of dipyrromethanes from aldehydes and unsubstituted pyrrole catalyzed by SO3H-functionalized ionic liquids (SO3H-ILs) in aqueous media at room temperature. Notably, SO3H-ILs, 1-butylsulfonic-3-methylimidazolium hydrogen sulfate ([bsmim][HSO4]) was the most efficient catalyst for moderate to good yields of the corresponding desired products.

Structural diversity in heteroleptic dipyrrinato copper(II) complexes

Synthesis and characterization of the heteroleptic dipyrrinato complexes [Cu2(2-pcdpm)2(acac)2] (1), [Cu 2(2-pcdpm)2(hfacac)2] (2), [Cu 3(4-OHdpm)2(acac)4]

Thiourea dioxide promoted efficient organocatalytic one-pot synthesis of a library of novel heterocyclic compounds

The utility of thiourea dioxide as an efficient organocatalyst for the library synthesis of novel heterocyclic compounds via one-pot multicomponent coupling reactions is disclosed. Thiourea dioxide is an inexpensive and readily accessible catalyst, resulting in better product yields as compared to the corresponding thiourea as catalyst. Thiourea dioxide is found to be insoluble in various organic solvents and therefore at the end of the reaction products can be separated by extraction with diethyl ether and the recovered catalyst can be used several times with consistent catalytic activity.

Fast and eco-friendly synthesis of dipyrromethanes by H2SO4 SiO2 catalysis under solvent-free conditions

For the first time, sillica-supported sulfuric acid has been used as a heterogeneous, reusable and efficient catalystat room temperature to give the corresponding dipyrromethanes in a very short reaction time. The new reactionprocedure is simple and solvent is not required.

Hexa boron-dipyrromethene cyclotriphosphazenes: Synthesis, crystal structure, and photophysical properties

We have synthesized four examples of a cyclotriphosphazene ring appended with six boron-dipyrromethene dyes N3P3(BODIPY) 6by adopting two different methods. In method I, 1 equiv of N 3P3Cl6

A novel method for the synthesis of dipyrromethanes by metal triflate catalysis

5-Substituted dipyrromethanes were synthesized by the reaction of N-tosyl imines with excess pyrrole in the presence of metal triflates. Tripyrromethane and other oligomeric side products were not observed. High yields of 5-substituted dipyrromethanes wer