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Updated: Sep 21, 2025

Author Spotlight: Advances in Nanoscale Infrared Spectroscopy to Explore Multiphase Polymeric Systems
Published on: June 23, 2023
Supramolecular Orientation in Anisotropic Assemblies by Infrared Nanopolarimetry
Timur Shaykhutdinov1, Simona D Pop1, Andreas Furchner1
1Interface Analytics Research Department, Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V., Berlin 12489, Germany.
Abstract:
We report on the experimental characterization of anisotropic supramolecular assemblies by infrared (IR) nanopolarimetry. The presented IR absorption anisotropy imaging method simultaneously provides nanoscale-resolved insights into internal composition, intermolecular interactions, and supramolecular orientation in a label-free and noninvasive fashion. Our study of porphyrin aggregates demonstrates that their morphology can be correlated with stable J-type and metastable H-type stacking-induced anisotropic organization, revealing different oriented attachment growth mechanisms supported by theory. This analysis establishes the broad applicability of IR nanopolarimetric studies to supramolecular polymerization and biomolecular assemblies, opening up new routes in polymer science and macromolecular research.
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