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Block Copolymer-Directed Single-Diamond Hybrid Structures Derived from X-ray Nanotomography

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Donnelly,  Claire
Spin3D: Three-Dimensional Magnetic Systems, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Djeghdi, K., Karpov, D., Abdollahi, S. N., Godlewska, K., Iseli, R., Holler, M., et al. (2024). Block Copolymer-Directed Single-Diamond Hybrid Structures Derived from X-ray Nanotomography. ACS Nano, 18(39), 26503-26513. doi:10.1021/acsnano.3c10669.


Cite as: https://hdl.handle.net/21.11116/0000-0010-2E80-A
Abstract
Block copolymers are recognized as a valuable platform for creating nanostructured materials. Morphologies formed by block copolymer self-assembly can be transferred into a wide range of inorganic materials, enabling applications including energy storage and metamaterials. However, imaging of the underlying, often complex, nanostructures in large volumes has remained a challenge, limiting progress in materials development. Taking advantage of recent advances in X-ray nanotomography, we noninvasively imaged exceptionally large volumes of nanostructured hybrid materials at high resolution, revealing a single-diamond morphology in a triblock terpolymer-gold composite network. This morphology, which is ubiquitous in nature, has so far remained elusive in block copolymer-derived materials, despite its potential to create materials with large photonic bandgaps. The discovery was made possible by the precise analysis of distortions in a large volume of the self-assembled diamond network, which are difficult to unambiguously assess using traditional characterization tools. We anticipate that high-resolution X-ray nanotomography, which allows imaging of much larger sample volumes than electron-based tomography, will become a powerful tool for the quantitative analysis of complex nanostructures and that structures such as the triblock terpolymer-directed single diamond will enable the generation of advanced multicomponent composites with hitherto unknown property profiles. © 2024 The Authors. Published by American Chemical Society.