Chirality Transfer to Mesoscale Network Assemblies
Abstract
Motivated by ongoing experimental studies by IANTP collaborator, Rong-Ming Ho (Natl Tsing Hua Univ., Taiwan), on the self-assembly ABC triblock copolymers possessing an intrinsically chiral block, we have developed and applied an orientation self-consistent field (oSCF) theory framework to study of the chiral organization of chain segments within self-assembled periodic, triblock nanostructures. We have applied this oSCF theory to understand how the relationship between "mesochiral geometry" of the domain shapes and the distribution and magnitude of inter-segment twist within chiral domains, within two distinct types of mesochiral geometries. First, we have investigated how non-cubic variants of the alternating gyroid morphology exhibit variable degrees of intra-domain segment twist, which suggests a new mechanism to stabilize non-cubic network morphologies in chiral triblocks. Additionally, we have applied a recently developed analysis of electron tomography reconstructions from the Ho group, to quantify the mesoscale "handedness" of the alternating gyroid network phase formed by assemblies chiral triblock copolymers for the first time.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 14, 2019
- Accession Number
- AD1077053
Entities
People
- Gregory M. Grason
Organizations
- University of Massachusetts Amherst