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Here we construct a C2H6-selective mesoporous Zr-MOF, NUT-77, using indolo[3,2-b]carbazole-based tetracarboxylate ligands, and then apply post-synthetic linker installation of dicarboxylate linkers for pore space partition (PSP). The resulting NUT-77-Me2BPDC and NUT-77-BPDC-NH2 show increased pore volumes and reduced pore sizes, leading to higher C2H6 uptake and selectivity. At 273 K and 1 bar, the C2H6\/C2H4 separation potential (\u0394q) of NUT-77-Me2BPDC is 122% higher than that of parent NUT-77. Breakthrough experiments confirm the improved dynamic separation. Density functional theory calculations indicate that the installed linkers introduce more C\u2013H\u00b7\u00b7\u00b7\u03c0 and hydrogen-bonding sites, strengthening C2H6 affinity. The PSP strategy provides a route for tailoring MOF pore environments to enhance C2H6-selective adsorption in C2H6\/C2H4 separation.<\/jats:p>","DOI":"10.1021\/acs.inorgchem.6c04005","type":"journal-article","created":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T02:02:24Z","timestamp":1789005744000},"page":"22141-22148","source":"Crossref","is-referenced-by-count":0,"title":["Pore Space\nPartition in Indolo[3,2-\n                    <i>b<\/i>\n                    ]carbazole-based\nZr-MOF via Post-Synthetic Linker Installation\nfor Enhanced Ethane\/Ethylene Separation"],"prefix":"10.1021","volume":"65","author":[{"given":"Hang-Ou","family":"Qi","sequence":"first","affiliation":[{"name":"Nanjing Tech University , , ,","place":["Nanjing, China, 211816"]},{"name":"Henan Polytechnic Institute , , ,","place":["Nanyang, China, 473000"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-5625-1180","authenticated-orcid":true,"given":"Xiaoyu","family":"Wu","sequence":"additional","affiliation":[{"name":"National University of Singapore , , ,","place":["Singapore, Singapore, 117576"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinli","family":"Zhang","sequence":"additional","affiliation":[{"name":"Nankai University , , ,","place":["Tianjin, China, 300350"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ze-Jiu","family":"Diao","sequence":"additional","affiliation":[{"name":"Nanjing Tech University , , ,","place":["Nanjing, China, 211816"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao-Han","family":"Li","sequence":"additional","affiliation":[{"name":"Nanjing Tech University , , ,","place":["Nanjing, China, 211816"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhou-Rui","family":"Yan","sequence":"additional","affiliation":[{"name":"Nanjing Tech University , , ,","place":["Nanjing, China, 211816"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7546-5580","authenticated-orcid":true,"given":"Jiandong","family":"Pang","sequence":"additional","affiliation":[{"name":"Nankai University , , ,","place":["Tianjin, China, 300350"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8761-191X","authenticated-orcid":true,"given":"Lifeng","family":"Ding","sequence":"additional","affiliation":[{"name":"Xi\u2019an Jiaotong-Liverpool University , , ,","place":["Suzhou, China, 215123"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7418-5659","authenticated-orcid":true,"given":"Guoliang","family":"Liu","sequence":"additional","affiliation":[{"name":"Nanjing Tech University , , ,","place":["Nanjing, China, 211816"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6395-312X","authenticated-orcid":true,"given":"Lin-Bing","family":"Sun","sequence":"additional","affiliation":[{"name":"Nanjing Tech University , , ,","place":["Nanjing, China, 211816"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,9,9]]},"reference":[{"key":"2026092108271000200_cit1","doi-asserted-by":"publisher","first-page":"435","DOI":"10.1038\/532435a","article-title":"Seven chemical separations to change the world","volume":"532","author":"Sholl","year":"2016","journal-title":"Nature"},{"key":"2026092108271000200_cit2","doi-asserted-by":"publisher","first-page":"241","DOI":"10.1126\/science.aax8666","article-title":"Synergistic\nsorbent separation for one-step ethylene\npurification from a four-component mixture","volume":"366","author":"Chen","year":"2019","journal-title":"Science"},{"key":"2026092108271000200_cit3","doi-asserted-by":"publisher","first-page":"443","DOI":"10.1126\/science.aat0586","article-title":"Ethane\/ethylene separation in a metal-organic\nframework with iron-peroxo sites","volume":"362","author":"Li","year":"2018","journal-title":"Science"},{"key":"2026092108271000200_cit4","doi-asserted-by":"publisher","first-page":"1485","DOI":"10.1021\/jacs.0c11247","article-title":"Pore engineering for one-step ethylene purification from a three-component\nhydrocarbon mixture","volume":"143","author":"Zhu","year":"2021","journal-title":"J. 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Chem. Lett."},{"key":"2026092108271000200_cit35","doi-asserted-by":"publisher","first-page":"633","DOI":"10.1021\/jacs.9b12428","article-title":"Selective ethane\/ethylene separation\nin a robust microporous hydrogen-bonded\norganic framework","volume":"142","author":"Zhang","year":"2020","journal-title":"J. Am. Chem. Soc."},{"key":"2026092108271000200_cit36","doi-asserted-by":"publisher","first-page":"12940","DOI":"10.1021\/jacs.8b07563","article-title":"Boosting ethane\/ethylene\nseparation\nwithin isoreticular ultramicroporous metal-organic frameworks","volume":"140","author":"Lin","year":"2018","journal-title":"J. Am. Chem. 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Soc."},{"key":"2026092108271000200_cit39","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202523106","article-title":"Rational integration\nof amino functionalization and catalytic site modulation in Zr-MOFs\nfor synergistic enhanced photocatalysis","volume":"138","author":"Zhang","year":"2026","journal-title":"Angew.\nChem., Int. Ed."},{"key":"2026092108271000200_cit40","doi-asserted-by":"publisher","first-page":"29255","DOI":"10.1021\/jacs.5c08726","article-title":"Two-in-one\nflexible metal-organic framework: one-step C2H4 purification via inverse C2H6-C2H4 and C2H2-CO2 separations","volume":"147","author":"Mukherjee","year":"2025","journal-title":"J. Am. Chem. 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Chem., Int.\nEd."},{"key":"2026092108271000200_cit43","doi-asserted-by":"publisher","first-page":"6493","DOI":"10.1039\/c2cc31792c","article-title":"A robust doubly interpenetrated metal-organic framework constructed\nfrom a novel aromatic tricarboxylate for highly selective separation\nof small hydrocarbons","volume":"48","author":"He","year":"2012","journal-title":"Chem. Commun."},{"key":"2026092108271000200_cit44","doi-asserted-by":"publisher","first-page":"154","DOI":"10.1016\/j.micromeso.2016.05.006","article-title":"Experimental\nand computational study of ethane and ethylene adsorption in the MIL-53(Al)\nmetal organic framework","volume":"230","author":"Ribeiro","year":"2016","journal-title":"Micropor. Mesopor.\nMater."},{"key":"2026092108271000200_cit45","doi-asserted-by":"publisher","first-page":"11350","DOI":"10.1002\/anie.202100782","article-title":"One-step ethylene\npurification from an acetylene\/ethylene\/ethane ternary mixture by\ncyclopentadiene cobalt-functionalized metal-organic frameworks","volume":"60","author":"Wang","year":"2021","journal-title":"Angew. Chem., Int. Ed."},{"key":"2026092108271000200_cit46","doi-asserted-by":"publisher","first-page":"17704","DOI":"10.1021\/ja1089765","article-title":"Ethane\/ethene separation\nturned on its head: selective ethane adsorption on the metal-organic\nframework ZIF-7 through a gate-opening mechanism","volume":"132","author":"Gu\u0308cu\u0308yener","year":"2010","journal-title":"J. Am. Chem. Soc."},{"key":"2026092108271000200_cit47","doi-asserted-by":"publisher","first-page":"2614","DOI":"10.1021\/jacs.1c10973","article-title":"Immobilization\nof lewis\nbasic sites into a stable ethane-selective MOF enabling one-step separation\nof ethylene from a ternary mixture","volume":"144","author":"Gu","year":"2022","journal-title":"J. Am. Chem.\nSoc."},{"key":"2026092108271000200_cit48","doi-asserted-by":"publisher","first-page":"16020","DOI":"10.1002\/anie.201808716","article-title":"Molecular\nsieving of ethane from\nethylene through the molecular cross-section size differentiation\nin gallate-based metal-organic frameworks","volume":"57","author":"Bao","year":"2018","journal-title":"Angew.\nChem., Int. 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