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A notable example is the anthracene\u2010pentiptycene\u2010semifluorinated alkyl crystal\n                    <jats:bold>1\u2010F4<\/jats:bold>\n                    , recently reported to exhibit large elastic bending (\u03b5 \u2248 12%) and &gt;15% photoinduced crystal expansion without fracture. Here, we investigate a homologous crystal series (\n                    <jats:bold>\n                      1\u2010F\n                      <jats:italic>n<\/jats:italic>\n                    <\/jats:bold>\n                    ,\n                    <jats:italic>n<\/jats:italic>\n                    = 2, 3, 4, and 6) and reveal a mechanically coupled supramolecular scissoring motion that governs their diverse mechanical responses. The balance between scissor stretchability and compressibility, tuned by semifluorinated alkyl substituents, dictates the deformation mode, elasticity, and crystal integrity. An optimally balanced scissor state in\n                    <jats:bold>1\u2010F4<\/jats:bold>\n                    enables exceptional elastic and photomechanical deformation while preserving crystal integrity, whereas fully\u2010extended (\n                    <jats:bold>1\u2010F2<\/jats:bold>\n                    ), over\u2010contracted (\n                    <jats:bold>1\u2010F6<\/jats:bold>\n                    ), or mechanically unbalanced (\n                    <jats:bold>1\u2010F3<\/jats:bold>\n                    ) scissor states lead to brittle failure or explosive photosalient behavior. These results establish a direct structure\u2212motion\u2212property relationship within this homologous series, demonstrating that key mechanical properties, including deformation mode and elastic limit, are encoded in the initial scissor geometry within the crystal packing arrangement.\n                  <\/jats:p>","DOI":"10.1002\/anie.2931090","type":"journal-article","created":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T10:21:51Z","timestamp":1788776511000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Mechanically Coupled Supramolecular Scissors Govern Photomechanical and Elastic Responses in Molecular Crystals"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-4753-346X","authenticated-orcid":false,"given":"Shu\u2010Huan","family":"Tsai","sequence":"first","affiliation":[{"name":"Department of Chemistry National Taiwan University  Taipei City 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