Abstract

We have found a giant zincblende structure with a 45 nm lattice constant in an ABC star polymer / homopolymer blend system. Alternating four-coordinate cellular domains of components A and B form a diamond lattice by using space-division property of ABC star polymers.Transmission electron micrographs reveal spherical domains of A and B with space-filling component C, and small-angle X-ray scattering confirms the corresponding F-43m space group symmetry. The present result opens a new way to construct mesoscale non-close-packed lattices, which have a relevance to photonic applications.