Dresden 2026 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 39: French-German Session: Nanomaterials, Composites and Hybrids I

CPP 39.2: Vortrag

Mittwoch, 11. März 2026, 15:30–15:45, ZEU/0260

Lamellar Domain Spacing of Copolymers with Nonlinear Block Architectures — Andrzej Grzyb¹, Jarosław S. Kłos², Aykut Erbaş³, Michael Lang⁴, and •Jarosław Paturej¹ — ¹Institute of Physics, University of Silesia, Katowice, Poland — ²Faculty of Physics, A. Mickiewicz University, Poznań, Poland — ³UNAM, Bilkent University, Ankara, Turkey — ⁴Leibniz-Institut für Polymerforschung Dresden e.V., Germany

Topological modification of block copolymer (BCP) conformations offers a promising approach for developing self-assembled periodic nanostructured materials with smaller domain sizes, which are essential for a range of technological applications. Cyclic polymers, with their inherently more compact conformations, present an effective strategy for achieving this miniaturization. In this work, through a combination of analytical theory and coarse-grained molecular dynamics simulations, we establish a relationship between different nonlinear topologies and the corresponding domain size of lamella-forming BCPs. Our investigations includes BCP architectures with one or two cyclic segments such as tadpoles, diblock and triblock 8-shaped polymers, and diblock nonconcatenated and concatenated rings. We demonstrate that the primary reduction in lamellar domain size is driven by the more compact arrangement of monomers in the cyclic architectures, with an additional contribution from the nonconcatenation of cyclic segments. This is corroborated by theoretical predictions for both domain size reduction and BCP conformations across different architectures.

Keywords: block copolymers; self-assembly; molecular dynamics; analytical theory; nonlinear polymer architectures