{"paper_id":"4cf76968-e51f-45f0-a6ed-8e08e5e96ad8","body_text":"Submitting author affiliation:\nKwansei Gakuin University, Sanda City, Japan\nBeilstein Arch. 2025, 202538. https://doi.org/10.3762/bxiv.2025.38.v1\nPublished 02 Jun 2025\nRead the peer-reviewed version of this preprint:\nhttps://doi.org/10.3762/bjoc.21.124\nShow All Preprints\nNanotechnology\nOrganic chemistry\nBioorganic chemistry / chemical biology\nCatalysis\nChemical methods and reactions\nFlow and process chemistry\nGreen and sustainable chemistry\nMaterials chemistry\nMedicinal and pharmaceutical chemistry\nNano- and molecular-scale electronics\nNano-biomaterials and bioscience\nNanomagnetics\nNanomaterials, thin films and nanointerfaces\nNanomedicine\nNanometrology and nanomechanics\nNano-optics\nNanopatterning, self-assembly and nanofabrication\nNanostructures for energy and sensing applications\nNatural products chemistry\nOrgano main group chemistry\nOther nanotechnology (unclassified)\nOther organic chemistry (unclassified)\nPhotochemistry and photovoltaics\nPhysical organic chemistry\nSupramolecular chemistry\nOptically active higher-ordered structures, such as one-handed helical and propeller-shaped structures, can be constructed by folding the π-conjugated system using [2.2]paracyclophane as the chiral crossing unit, leading to circularly polarized luminescence (CPL) properties. Chiral cyclic dimers and trimers were synthesized using planar chiral [2.2]paracyclophane-containing enantiopure ribbon-shaped compounds as the chiral monomers. π-Conjugated systems were folded at the [2.2]paracyclophane units, and exhibited good photoluminescence quantum efficiencies and CPL anisotropy factors. Opposite chiroptical properties were observed between the dimer and trimer, despite the same absolute configuration of the planar chiral [2.2]paracyclophane units, which was reproduced by theoretical studies.\nKeywords: Planar chirality, [2.2]paracyclophane, circularly polarized luminescence, oligomer\n| Format: PDF | Size: 3.3 MB | Download |\nWhen a peer-reviewed version of this preprint is available, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:\nKumamoto, E.; Ogawa, K.; Okamoto, K.; Morisaki, Y. Beilstein Arch. 2025, 202538. doi:10.3762/bxiv.2025.38.v1\nCitation data can be downloaded as file using the \"Download\" button or used for copy/paste from the text window below.\nCitation data in RIS format can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and\nZotero.\n© 2025 Kumamoto et al.; licensee Beilstein-Institut.\nThis is an open access work licensed under the terms of the Beilstein-Institut Open Access License Agreement (https://www.beilstein-archives.org/xiv/terms), which is identical to the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0). The reuse of material under this license requires that the author(s), source and license are credited. Third-party material in this work could be subject to other licenses (typically indicated in the credit line), and in this case, users are required to obtain permission from the license holder to reuse the material.","source_license":"CC-BY-4.0","license_restricted":false}