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Herein, we construct a supramolecular cavitand platform that enables programmable locking, switching, and rewriting of chiral information gated by light. A resorcin[4]arene\u2010based cavitand integrates multiple photoisomeriable stilbenes and alternating imidazole segments. By employing an outer\u2010wall binding strategy to bind multiple chiral carboxylic acids, it achieves efficient chirality transfer and enables the construction of a supramolecular chiral cavitand. Photoisomerization of embedded stilbene units, drives pathway\u2010dependent conformational transformations that govern chirality induction, retention, and erasure. Notably, different light channels (365\/254\u00a0nm) enable distinct outcomes, including preservation of chiral host\u2013guest complexes, disruption of propeller chirality, and complete guest release. Furthermore, chirality can be locked and retained in a propeller form after removing the chiral acids, demonstrating a light\u2010regulated chiral construction. The system further functions as a\n                    <jats:italic>read\u2010write<\/jats:italic>\n                    chiral information platform, allowing visualization, encryption, decryption, and erasure of chiroptical signals through programmable photochemical inputs. This work establishes a strategy for coupling photochemical control with supramolecular confinement, providing a proof\u2010of\u2010concept study of significant importance in chiral informatics.\n                  <\/jats:p>","DOI":"10.1002\/anie.9254918","type":"journal-article","created":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T17:16:16Z","timestamp":1788542176000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Light\u2010Gated Chirality in a Supramolecular Cavitand"],"prefix":"10.1002","volume":"65","author":[{"given":"Hang","family":"Yu","sequence":"first","affiliation":[{"name":"Key Laboratory of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering Shandong University  Jinan People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aiyou","family":"Hao","sequence":"additional","affiliation":[{"name":"Key Laboratory of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering Shandong University  Jinan People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4302-3846","authenticated-orcid":false,"given":"Pengyao","family":"Xing","sequence":"additional","affiliation":[{"name":"Key Laboratory of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering Shandong University  Jinan People's Republic of 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