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However, current strategies face challenges in achieving precise and rewritable pattern control with long\u2010term stability due to uncontrolled diffusion kinetics of reactive species and structural instability upon stimulus removal. Here, we design a crystal\u2010restricted dynamic organohydrogel that achieves precise optical patterning via confining dynamic covalent bond exchange between crystalline microdomains. These microdomains act as physical boundaries that restrict bond exchange and migration to microscale spaces, thereby accelerating exchange kinetics and network rearrangement for precise optical printing. Moreover, crystalline microdomains provide higher energy barriers that ensure long\u2010term pattern stability through shape retention below crystallization temperature, maintaining pattern fidelity for over 180 days. The system demonstrates exceptional shape memory performance with 98% fixity and recovery ratios over 20 cycles. Additionally, reversible phase transitions coupled with dynamic bond exchange enable rapid self\u2010healing and rewritable optical printing for information encoding, encryption, and controlled erasure. This design principle can be extended to other dynamic polymer systems, offering a generalizable platform for intelligent responsive interfaces with potential applications in anti\u2010counterfeiting and adaptive mechanical devices.<\/jats:p>","DOI":"10.1002\/anie.4866509","type":"journal-article","created":{"date-parts":[[2026,5,15]],"date-time":"2026-05-15T16:29:16Z","timestamp":1778862556000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Rewritable, Stable, and Precise Optical Printing on Organohydrogel via Confining Dynamic Covalent Bond Exchange Between Crystalline Microdomains"],"prefix":"10.1002","volume":"65","author":[{"given":"Yingchao","family":"Yang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Bioinspired Interfacial Materials Science Bioinspired Science Innovation Center Hangzhou International Innovation Institute Beihang University  Hangzhou China"},{"name":"School of Chemistry Beihang University  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-7448-6873","authenticated-orcid":false,"given":"Yunfei","family":"Ru","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Bioinspired Interfacial Materials Science Bioinspired Science Innovation Center Hangzhou International Innovation Institute Beihang University  Hangzhou China"},{"name":"School of Chemistry Beihang University  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhewei","family":"Yan","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Bioinspired Interfacial Materials Science Bioinspired Science Innovation Center Hangzhou International Innovation Institute Beihang University  Hangzhou China"},{"name":"School of Chemistry Beihang University  Beijing 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