Abstract
Hydrogen-bonded polymer complexes formed from poly(4-hydroxystyrene) and poly( N, N-dimethyl-acrylamide) were studied by cross-polarization/magic angle spinning 13C nuclear magnetic resonance spectroscopy. Evidence for specific interaction was provided by a shift of ∼3 ppm in the phenolic carbon resonance peak. The proton spin-lattice relaxation times are shorter than the values predicted by a linear model. On the other hand, the rotating frame spin lattice relaxation times, T 1 ϱ , of the complexes agree with the predictions. The scale of homogeneity is estimated from the T 1 ϱ data to be ∼2.5 nm.
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