Synthesis, characterization, photophysical properties and stability of bay-substituted tetrachloro-perylene diimide dianion salt by alkali treatment

Substituent-dependent absorption and fluorescence properties of perylene bisimide radical anions and dianions

“…29 Reduction of this molecule with palladium on activated charcoal, hydrogen and sodium hydrogen carbonate gave the PBI dianion disodium salt, which was stable even under ambient conditions for months. 29 In the following years, more examples of ambient stable radical anions and dianions have been reported, using more moderate reducing agents like potassium carbonate in DMF 30,31 or tetraphenylphosphonium iodide. 32 Usually, characterization of the reduced species remains scarce and only qualitative UV/Vis/NIR absorption spectra of the neutral as well as reduced species are reported, while insights into emission properties are missing.…”

A Cathodic Electrochromic Material Based on Thick Perylene Bisimide Film with High Optical Contrast and High Stability

“…37,40 Meanwhile, the film became almost transparent. When a more negative potential −1.0 V was applied, the absorption of the PBI anion radical decreased, and new absorption band with maximum width of 680 nm appeared, indicating the formation of PBI dianion (Cl-PBI 2− ), 37,41 under which condition the film turned turquoise. In the neutral state, the spectra of PBI in the three electrolytes were almost the same.…”

Singlet oxygen formation from photoexcited P3HT:PCBM films applied in oxidation reactions

“…To circumvent this problem, additional organic chromophores can be introduced. [15][16][17][18][19] The high reactivity of 1 O 2 causes its lifetime to be very short and it thus must be produced in situ, using either homogenous or heterogeneous photocatalysts. Immobilization of photosensitizers generally results in a decrease in their activity but may be beneficial for commercial applications.…”