{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T15:54:11Z","timestamp":1791647651960,"version":"4.3.4"},"reference-count":66,"publisher":"Wiley","issue":"42","license":[{"start":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T00:00:00Z","timestamp":1787097600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T00:00:00Z","timestamp":1787097600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Angew Chem Int Ed"],"published-print":{"date-parts":[[2026,10,12]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Separating\n                    <jats:italic>o<\/jats:italic>\n                    \u2010xylene from all C8 aromatic isomers (\n                    <jats:italic>m<\/jats:italic>\n                    \u2010xylene,\n                    <jats:italic>p<\/jats:italic>\n                    \u2010xylene, and ethylbenzene) is critical for industry but remains a formidable challenge due to their quite similar physicochemical properties. While metal\u2010free frameworks offer an ideal solution via selective adsorption, their development lags behind metal\u2010based systems. For instance, due to the limited connection modes and lack of suitable linkers, B\u2190N frameworks (BNFs) struggle to handle complex separations. To address this limitation, we report a programmed assembly strategy by rationally integrating secondary connectivity into bridging linkers. Implementing this strategy yielded stable BNFs,\n                    <jats:bold>BN\u2010DPTA1<\/jats:bold>\n                    and\n                    <jats:bold>BN\u2010DPTA2<\/jats:bold>\n                    , featuring tunable and confined cavities.\n                    <jats:bold>BN\u2010DPTA1<\/jats:bold>\n                    exhibits specific abstraction of toluene, while\n                    <jats:bold>BN\u2010DPTA2<\/jats:bold>\n                    selectively adsorbs\n                    <jats:italic>o<\/jats:italic>\n                    \u2010xylene from benzene derivatives. Notably,\n                    <jats:bold>BN\u2010DPTA2<\/jats:bold>\n                    represents the first metal\u2010free framework to achieve highly selective adsorption of\n                    <jats:italic>o<\/jats:italic>\n                    \u2010xylene over all C8 aromatic isomers. The multiple non\u2010covalent interactions between the BNF cavities and guest molecules facilitate tight encapsulation, enabling the effective removal of toluene and\n                    <jats:italic>o<\/jats:italic>\n                    \u2010xylene from the atmosphere (97.4% and 96.0% removal efficiency at 50\u00a0ppm, respectively). The dynamic, reversible adsorption\/desorption behavior of BNFs allows for single\u2010step purification of toluene and\n                    <jats:italic>o<\/jats:italic>\n                    \u2010xylene via solid\u2010phase extraction columns, achieving purities exceeding 99.9%.\n                  <\/jats:p>","DOI":"10.1002\/anie.1406923","type":"journal-article","created":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T14:24:56Z","timestamp":1787149496000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Selective Adsorption of\n                    <i>o<\/i>\n                    \u2010Xylene From all C8 Aromatics via Secondary Connectivity Manipulation in B\u2190N Frameworks"],"prefix":"10.1002","volume":"65","author":[{"given":"Xiang\u2010Shuai","family":"Li","sequence":"first","affiliation":[{"name":"Department of Chemistry The Hong Kong University of Science and Technology (HKUST)  Hong Kong SAR 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China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zenan","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Chemistry The Hong Kong University of Science and Technology (HKUST)  Hong Kong SAR China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jian","family":"Zhao","sequence":"additional","affiliation":[{"name":"Ganjiang Innovation Academy Jiangxi Institute of Rare Earths Chinese Academy of Sciences  Ganzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8479-3172","authenticated-orcid":false,"given":"Wan","family":"Chan","sequence":"additional","affiliation":[{"name":"Department of Chemistry The Hong Kong University of Science and Technology (HKUST)  Hong Kong SAR 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