Title
Circular dichroism and circularly polarised luminescence of bipyrenyl oligopeptides, with piperidines added in the peptide chains
Author
Yuki Mimura, Sayaka Kitamura, Motohiro Shizuma, Mizuki Kitamatsu, Yoshitane Imai
Year
2018
Journal
Organic & Biomolecular Chemistry
Abstract
Upon combining chiral peptides (the most basic chiral source) with pyrene moieties, we found that chiral oligopeptides bearing two-pendant pyrenyl units exhibited circularly polarised luminescence (CPL) originating from intramolecular excimers at 450–490 nm in various solvents, and the sign of their CPL signals depended on the type of solvent employed. The CPL and circular dichroism signs and intensities could be tuned by the introduction of a piperidine unit into the chiral peptide chain; thus, the obtained structure could be considered a practical Lock ON–OFF system for oligopeptide luminophores.
Instrument
J-820
Keywords
Circular dichroism, Stereochemistry, Chemical stability, Biochemistry