Laterally π-Extended Polyhelicenes
Helically coiled, semiconducting graphenic nanostructures show exceptional promise for nanoelectronics, yet their synthesis has remained challenging due to their inherently strained backbone and the difficulties associated with structural characterization. In this work, we demonstrate the synthesis and characterization of laterally π-extended polyhelicenes (EPHs), achieved through regioselective cyclodehydrogenation. Spectroscopic and microscopic analyses, including mass spectrometry, solid-state NMR, scanning-probe microscopy, and transmission electron microscopy, confirm the well-defined helical, layered architecture of the EPHs. Ultrafast terahertz spectroscopy reveals pronounced intrahelix photoconductivity, demonstrating their potential as carbon-based nanoscale conductors. The scalable synthetic approach described in this work unlocks the application potential of carbon-based helical nanostructures, paving the way for nanoinductors in nanoscale solenoids, spin-selective electronics, and future high-frequency nanoelectronic devices.
Authors
- Antoine Hinaut (ORCID: https://orcid.org/0000-0002-2608-2564)
- Koji Harano (ORCID: https://orcid.org/0000-0001-6800-8023)
- Koji Kimoto (ORCID: https://orcid.org/0000-0002-3927-0492)
- Ernst Meyer (ORCID: https://orcid.org/0000-0001-6385-3412)
- Mischa Bonn (ORCID: https://orcid.org/0000-0001-6851-8453)
- Grégory Pieters (ORCID: https://orcid.org/0000-0002-3924-8287)
- Yu‐Liang Tsai (ORCID: https://orcid.org/0000-0003-2269-0412)
- Hai I. Wang (ORCID: https://orcid.org/0000-0003-0940-3984)
- Guanzhao Wen (ORCID: https://orcid.org/0009-0002-1198-2110)
- Robert Graf (ORCID: https://orcid.org/0000-0003-2302-0760)
- Rémy Pawlak (ORCID: https://orcid.org/0000-0001-8295-7241)
- Deborah Prezzi (ORCID: https://orcid.org/0000-0002-7294-7450)
- Kläus Müllen (ORCID: https://orcid.org/0000-0001-6630-8786)
- Elisa Molinari (ORCID: https://orcid.org/0000-0002-0692-6096)
- Zijie Qiu (ORCID: https://orcid.org/0000-0003-0728-1178)
- Dieter Schollmeyer
- Akimitsu Narita (ORCID: https://orcid.org/0000-0002-3625-522X)
- Lilian Estaque
- Hao Wu (ORCID: https://orcid.org/0000-0002-7842-6453)
Institutions
- University of Modena and Reggio Emilia (IT)
- Okinawa Institute of Science and Technology Graduate University (JP)
- University of Basel (CH)
- Utrecht University (NL)
- Johannes Gutenberg University Mainz (DE)
- National Institute for Materials Science (JP)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Université Paris-Saclay (FR)
- Shanghai Institute for Science of Science (CN)
- Istituto Nanoscienze (IT)
- Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (FR)
- Max Planck Institute for Polymer Research (DE)
- Technologies pour la Santé (FR)
- Chinese University of Hong Kong, Shenzhen (CN)
- Systems Biology Institute (JP)
- CEA Paris-Saclay (FR)
- Institute of Biomedical Technologies (IT)
- Autonomous Undersea Systems Institute (US)
- Institute of Science Tokyo (JP)
Publication Details
- Journal
- Journal of the American Chemical Society
- Published
- 2025-11-14
- DOI
- https://doi.org/10.1021/jacs.5c15494
- Citations
- 3
- Primary Topic
- Synthesis and Properties of Aromatic Compounds
- Type
- article
- Field-Weighted Citation Impact
- 2.81