Abstract
Conformational order has been found in aqueous solution of tactic vinyl polymers derived from syndiotactic poly(methacrylic acid hydrazide). The CD spectra of poly(methacrylic acid–Nβ(L-lactoyl)hydrazide) and poly(methacrylic acid–Nβ(N-tert-butyloxy-carbonyl-L-seryl) hydrazide) were studied in their deprotonated state, i.e., when containing diacyl hydrazide anion moieties. The experimental spectral traces were divided by a graphical subtraction procedure into an exciton doublet, representing monomeric units in conformational order, and Cotton effects due to monomeric units without such order. The resulting probabilities were used as a basis for a simulation procedure, carried out manually and by computer. The simulation yielded an estimate of the sequence statistics of ordered and unordered monomeric units in the polymer chain.
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Klesper, E., Thevissen, J. & Krieger, D. Circular Dichroism and Exciton Effect of Syndiotactic Methacrylic Polymers with Chiral Diacyl Hydrazide Side Chains V. Number of Exciton Coupled Monomeric Units. Polym J 20, 421–431 (1988). https://doi.org/10.1295/polymj.20.421
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DOI: https://doi.org/10.1295/polymj.20.421