A novel method for selective generation of aryl radicals from diaryliodonium salts and iodanylidene malonates with sodium 2,2,6,6‐tetramethylpiperidine‐1‐oxyl (TEMPONa) as a single‐electron transfer (SET) reducing reagent is described. In the presence of various alkenes, aryl radicals formed after SET‐reduction of hypervalent iodine compounds undergo alkene addition and the adduct radicals that are
Reversible switching of substrate activity of poly-N-isopropylacrylamide peptide conjugates
作者:Kian Molawi、Armido Studer
DOI:10.1039/b713083j
日期:——
The activity of smart polymer peptide conjugates towards chymotrypsin catalyzed hydrolysis was reversibly switched on and off using temperature as the trigger.
Searching for “intelligence”: Azurin–PNIPAM conjugates were prepared by site‐directed mutagenesis followed by protein reconstitution by using imidazole‐conjugated poly(N‐isopropylacrylamides). The polymer‐bound imidazole acts as a ligand in the active site of the blue copper protein azurin. The bioconjugates showed thermosensitivebehavior in electron‐transfer processes with reduced cytochrome c.