화학공학소재연구정보센터
Journal of the American Chemical Society, Vol.129, No.6, 1506-1506, 2007
Chelation-enhanced circular dichroism of tripodal bisporphyrin ligands
A chiral tripodal ligand readily prepared from primary amines that contains two monosubstituted tetraphenylporphyrin (TPP) moieties is described. Complexation with Cu(II) in the presence of NH4SCN gives a fully metalated porphyrin and tripoda l ligand complex. The free ligand shows a weak circular dichroism (CD) signal, but metalation gives a strong exciton-coupled CD spectrum. Reduction of the Cu(II) complex results in loss of CD signal.