A helicene-containing foldamer displaying highly solvent-dependent CD spectra.
[structure: see text] A m-phenylene ethynylene oligomer containing a helicene unit was synthesized to bias the twist sense of the folded helical conformation. The CD spectra of the helicene oligomer exhibited large Cotton effects that varied greatly with the solvent composition, including three separate conformational transitions.
Stone
Matthew T
MT
Department of Chemistry and Materials Science & Engineering, 600 South Mathews Avenue, The University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
Fox
Joseph M
JM
Moore
Jeffrey S
JS