Order in purely organic network polymers is hard to achieve, as reversible, dynamic covalent bond formation is required. Strategies focused on thermodynamic controlled transformations, as kinetics would not seemingly favour reversibility. We recently reported formation of crystalline network polymers under kinetically favoured conditions by using quaternary ammonium salt linked networks. Charged bulky bridges align, even under fast reaction times (20 minutes) if the rotational freedom is granted. Adding vicinal methyl substituents block the ordering, hence form amorphous networks. Raman experiments and SEM images reveal stacking of 2D layers. Substituent effects and forced equilibrium conditions can lead to mismatched assemblies.

Charged induced formation of crystalline network polymers

253rd National Meeting (2017)

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