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Poly(phenylacetylene) Amines: A General Route to Water-Soluble Helical Polyamines

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journal contribution
posted on 2018-09-12, 00:00 authored by Esteban Suárez-Picado, Emilio Quiñoá, Ricardo Riguera, Félix Freire
Poly­(phenylacetylene)­s bearing prim- and sec-amine groups are barely known because of their poisoning activity toward the polymerization catalyst. Herein, we prepare 11 different amino polymers in high yields by direct polymerization of their corresponding ammonium salts in water using [Rh­(cod)2]+BF4 as catalyst. They are stable, water-soluble, and show a helical structure that responds to external stimuli (polarity, pH, and metal ions) acting on the pendants. The location of the amino group in the pendant is shown to be critical for the helical response to protonation.