3993
Macromolecules 1991,24, 3993-3998
Helically Arranged Azobenzene Chromophores along a Polypeptide Chain. 1. Synthesis and Circular Dichroism Masahiko Sisido,’ Yoshihiro Ishikawa, Kenjy Itoh, and Shigeo Tazuket Research Laboratory of Resources Utilization, Tokyo Institute of Technology, 42.59 Nagatsuta, Midori-ku, Yokohama 227, Japan Received August 29, 1990; Revised Manuscript Received December 10, 1990
ABSTRACT Two series of sequential polypeptides having repeating units Lya(Z),-azoAla (I; m = 1-31, azoAla-Lys(Z)-azoAla-Aib(II;m’ = l),and Lya(Z),
