The kinetics of photooxidation tetrahydrobiopterin was investigated, the quantum yields formation dihydropterin dimers were calculated when using a xenon lamp, tunable UV laser and LED as radiation sources. A comparative analysis effectiveness these sources for process allowed us to conclude that most effective purposes vitiligo phototherapy are, apparently, with emission maxima in region 325 n...

Abstract Single‐atom catalysts (SACs) often show exceptionally high performance per metal loading. Besides benefiting from a better atom utilisation, the metal‐support interaction is more pronounced in SACs compared to traditional nanoparticle catalysts. Thus, using photochemical conversions of great advantage where rapid reactions depend on synergistic active site with photoactive support. Her...

Photosystem I fragments were prepared by digitonin treatment of spinach chloroplasts. The midpoint potential of cytochrome b6 in the fragments is close to 0V, showing a one electron transition. No cytochrome b559 was detectable, neither in difference absorption spectra nor in light-induced absorbance changes. In the absence of added cofactors only cytochrome b6 photoreduction can be observed. T...