Iodonium salts are historical cationic photoinitiators extensively used for the polymerization of epoxides or vinyl ethers. As drawback, absorption iodonium is strongly UV-centered so that this UV photoinitiator can only operate in visible range by mean a photosensitization process. With aim at simplifying composition photopolymerizable resins, numerous chromophores have been covalently linked ...

With light excitation, triplet oxygen molecules (3O2; red dots) are converted to singlet (1O2; blue through photosensitization by the BODIPY-hetero[5]helicene (BHH) molecule. The researcher is trying increase twist angle of BHH. As it increases, stick indicating percentage 1O2 conversion moves towards 100. This illustrates how increases with increasing BHH angle, which main highlight work. More...

Leptospirosis is a bacterial zoonotic disease, which can induce hepatic lesions. Photosensitization (PS)maybe is the result of accumulation of photodynamic agents in unpigmented area of the skin exposed tosunlight which occurred due to hepatic lesions. An outbreak of leptospirosis was occurred in a dairy cattleherd complex with 760 dairy milking cows in March (1990). Totally, 412 cows (54.21%) ...