The O$^{52}$ Network by Molecular Design: CECD Tetrablock Terpolymers

Varying the length of poly(dimethylsiloxane) in poly(cyclohexylethylene-$b$-ethylene-$b$-cyclohexylethylene-$b$-dimethylsiloxane) (CECD) tetrablock terpolymers between 0 and 20{\%} produces the sequence of ordered phases: cylindrical-to-network-to-cylindrical. Small-angle X-ray scattering and transmission electron microscopy demonstrate \textit{Pnna }space group symmetry and a unique network morphology stabilized by the asymmetric molecular architecture and block interactions. These results establish a new design principle for the generation of triply periodic and multiply continuous nanostructured soft material.