Synthesis and functionalization of new polyhalogenated BODIPY dyes. Study of their photophysical properties and singlet oxygen generation

Synthesis, Characterization, and Antimicrobial Efficacy of Photomicrobicidal Cellulose Paper

“…41,42 These studies demonstrated that uptake of the photosensitizer, whether into the membrane or cytoplasm, was not necessary to effectively inactivate bacteria, and that photosensitizers conjugated to a cellulose solid support could have excellent antimicrobial efficacy against a diverse range of bacteria. More recently, several other studies of photosensitizers attached to solid supports, including both synthetic polymers 31,43,47,48,67,68 and a variety of cellulose-based materials, 40,44-46,69-73 have been reported.…”

“…24,36,37 Early investigations into aPDI materials were initially curtailed by the belief that, to be effective, photosensitizers needed to either be embedded in the cellular envelope or internalized into the bacteria. This has been refuted as our scientific understanding of the mechanisms of antimicrobial photodynamic inactivation of bacteria has advanced, and consequently a number of synthetic strategies for the conjugation of different classes of photosensitizers to synthetic and biopolymer-based scaffolds have been reported, including the use of esterification reactions, 38,39 the Cu(I)-catalyzed Huisgen-Meldal-Sharpless 1,3-dipolar cycloaddition reaction, [40][41][42] amine-or amide-linker forming conjugations, [43][44][45] as well as several other strategies. [46][47][48] Toward our goal of scalable, self-sterilizing materials based upon aPDI, we present here the preparation, characterization, and antimicrobial activity of paper sheets comprised of photosensitizer-conjugated cellulose fibers.…”

The effect of heavy atom to two photon absorption properties and intersystem crossing mechanism in aza-boron-dipyrromethene compounds

“…spin orbit coupling) [14][15][16]. This effect was investigated by monitoring fluorescence, phosphorescence and singlet oxygen quantum yields [1,39,43,44]. It is known that number of heavy atoms introduced to BODIPY core other than 2,6 positions do not affect ISC [43].…”

“…This effect was investigated by monitoring fluorescence, phosphorescence and singlet oxygen quantum yields [1,39,43,44]. It is known that number of heavy atoms introduced to BODIPY core other than 2,6 positions do not affect ISC [43]. However, it is not clear, how do heavy atoms on the peripheral positions effect ISC in the literature for aza-BODIPY compound.…”

Novel quenchometric oxygen sensing material based on diiodine-substituted boron dipyrromethene dye

“…Different ways to achieve halogenated BODIPY dyes were proposed: halogenation of the pyrrole ring, halogenation of the dipyrromethene precursors or electrophilic substitution reactions on the previously synthesized BODIPY dye. BODIPY dyes halogenated at different positions were synthesized and studied [22].…”