Abstract
Investigations were made of ultraviolet, optical rotatory dispersion, and circular dichroism of acrylic acid − (+) N-s-butyl-N-methylacrylamide random copolymers of different composition (COP Y, with Y=percentage of achiral acid repeat units). The nonlinear composition-dependence of optical rotatory dispersion and circular dichroism spectra is discussed with regard to the properties of homopolymers corresponding to amide and acid repeating units, i.e., (−) poly[N-s-butyl-N-methylacrylamide] and poly(acrylic acid), respectively. It is shown that some of the achiral acid units were asymmetrically perturbed because of a neighboring effect of chiral amide units. This finding well accounts for the nonlinear-composition-dependent chiroptical properties of COP Y, in spite of their random-coil structure in solution.
Similar content being viewed by others
Article PDF
References
K. Matsuzaki and T. Sugimoto, Makromol. Chem., 164, 127 (1973).
R. C. Schulz and E. Kaiser, Makromol. Chem., 86, 80 (1965).
H. Yamaguchi, H. Ueno, and Y. Minoura, J. Polym. Sci., A-1, 9, 897 (1971).
H. Yamaguchi and Y. Minoura, J. Polym. Sci., A-1, 8, 1467 (1970).
C. Carlini, F. Ciardelli, and P. Pino, Makromol. Chem., 119, 244 (1968).
H. Yuki, K. Ohta, and N. Yajima, Polym. J., 1, 164 (1970).
K. Ohta, K. Hatada, Y. Okamoto, and H. Yuki, J. Polym. Sci., Polym. Lett. Ed., 16, 545 (1978).
N. Majumbar, C. Carlini, R. Nocci, F. Ciardelli, and R. C. Schulz, Makromol. Chem., 177, 3619 (1976).
C. Braud and M. Vert, Polymer, 16, 115 (1975).
C. Braud, M. Vert, and E. Selegny, Makromol. Chem., 175, 775 (1974).
H. H. Jaffe and M. Orchin, “Theory and Applications of Ultraviolet Spectroscopy,” Wiley & Sons, New York, N.Y., 1962, p 180.
C. Braud and M. Vert, Isr. J. Chem., 15, 39 (1976/77).
J. R. Platt, J. Chem. Phys., 17, 484 (1949).
A. Moscowitz, in “ORD-Applications to Organic Chemistry,” C. Djerassi Ed., McGraw Hill, New York, N.Y., 1960, p 150.
P. Pino, F. Ciardelli, and E. Chiellini, in “Optical Rotatory Dispersion and Circular Dichroism in Organic Chemistry,” G. Snatzke Ed., Heyden & Sons Ltd., London, 1967, p 341.
C. Villiers, C. Braud, M. Vert, and E. Chiellini, unpublished results.
C. Villiers, C. Braud, M. Vert, E. Chiellini, and M. Marchetti, Eur. Polym. J., 14, 211 (1978).
T. Sato, T. Kadowaki, H. Takeda, and T. Otsu, J. Macromol. Sci., Chem., A12, 1225 (1978).
E. Kiesper, W. Gronski, and V. Barth, Makromol. Chem., 139, 1 (1970).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Braud, C., Vert, M. Asymmetric Perturbation of Carboxyl Chromophores in Optically Active Random Copolymers of Acrylic Acid and (+) N-s-Butyl-Nmethylacrylamide. Polym J 12, 785–792 (1980). https://doi.org/10.1295/polymj.12.785
Issue Date:
DOI: https://doi.org/10.1295/polymj.12.785