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X\u2010ray crystal structure analysis revealed the formation of a channel structure where 1D chains formed by intermolecular X\u00b7\u00b7\u00b7X interactions were arranged in a grid pattern. Host lattices of\n                    <jats:bold>1<\/jats:bold>\n                    and\n                    <jats:bold>2<\/jats:bold>\n                    were capable of reversibly adsorbing and desorbing Tol molecules while maintaining crystallinity. Dielectric measurements showed dielectric relaxation due to molecular motion of polar guest molecules (Tol and ClBz) in the host lattice formed by molecule\n                    <jats:bold>2<\/jats:bold>\n                    . In particular, crystals containing ClBz exhibited rotational dynamics of guest molecules with increasing temperature. These results provide important insights for the design of flexible porous materials using halogen\u00b7\u00b7\u00b7halogen interactions and the creation of dielectric materials based on guest molecule dynamics.\n                  <\/jats:p>","DOI":"10.1002\/chem.202502872","type":"journal-article","created":{"date-parts":[[2025,11,10]],"date-time":"2025-11-10T10:22:58Z","timestamp":1762770178000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Porous Organic Frameworks Utilizing Halogen\u00b7\u00b7\u00b7Halogen Interactions of X4\u2013tetra[2,3]Thienylene (X\u00a0=\u00a0Br, I): Guest Dynamics and Dielectric Response"],"prefix":"10.1002","volume":"31","author":[{"given":"Genki","family":"Saito","sequence":"first","affiliation":[{"name":"Graduate School of Engineering Tohoku University  Sendai 980\u20138579 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