Photophysics of diiodine-substituted fluorinated boron–dipyrromethene: A time resolved study

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

“…Assuming that phosphorescence lifetime in solid state under 77 K in frozen ethanol and under 298 K in solid methylcellulose matrix is approximately equal, k q = K sv / 0 = 6.2 × 10 5 M −1 c −1 . Authors [23] give the value of k q in diluted ethanol solutions (3 × 10 −6 М) as 4.7 × 10 8 M − 1 s −1 . Bimolecular constant is inversely proportional to excited state life time, consequently an increase of three orders of bimolecular quenching constant for I 2 BODIPY is explained by reduction of the life time of the T-state: 0 = 300 ns in liquid ethanol (298 K) [23], and 0 = 580 s in solid (77 K).…”

Dye Encapsulation in Polynorbornene Micelles

“…The fluorescence quantum yield in acetone was 0.03, in good agreement with values reported for similar diiodo BODIPY molecules. 28, 34 …”

“…There is a weaker absorption band with maximum >650 nm which is similarly assigned to the triplet state. 34 In toluene the kinetics of the 2,6-diiodo BODIPYs triplet state is mono-exponential with a characteristic lifetime, τ t , of 410 ± 30 µs. A literature value of τ t for a similar 2,6-diiodo BODIPY molecule in toluene at 1 µM is shorter than ours at 229 µs.…”

“…The molar absorptivity of the molecule in acetone was measured to be 82,000 M −1 cm −1 , consistent with values reported for similar molecules. 23, 33–34 …”

Difluoroboranyl derivatives as efficient panchromatic photoinitiators in radical polymerization reactions

“…7, S9). Based on the literature data connected with triplet state absorption spectra of BODIPY derivatives [44][45][46][47][48][49][50] this band may be attributed to the triplet state of currently investigated complexes.…”