{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T17:17:24Z","timestamp":1788455844043,"version":"build-2803163510"},"reference-count":41,"publisher":"American Chemical Society (ACS)","issue":"34","license":[{"start":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T00:00:00Z","timestamp":1787011200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T00:00:00Z","timestamp":1787011200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"},{"start":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T00:00:00Z","timestamp":1787011200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-045"}],"funder":[{"DOI":"10.13039\/100006151","name":"Basic Energy Sciences","doi-asserted-by":"publisher","award":["DE-AC02-05CH11231"],"award-info":[{"award-number":["DE-AC02-05CH11231"]}],"id":[{"id":"10.13039\/100006151","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100007247","name":"Adolph C. and Mary Sprague Miller Institute for Basic Research in Science, University of California Berkeley","doi-asserted-by":"publisher","award":["NA"],"award-info":[{"award-number":["NA"]}],"id":[{"id":"10.13039\/100007247","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100023581","name":"National Science Foundation Graduate Research Fellowship Program","doi-asserted-by":"publisher","award":["NA"],"award-info":[{"award-number":["NA"]}],"id":[{"id":"10.13039\/100023581","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,9,2]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The decarbonization of fossil fuel combustion streams and air is imperative to achieve negative carbon emissions and requires discovery of new materials that exhibit high CO2 capacities, long-term stability, and minimal energy input for the release of pure CO2. Numerous candidate sorbents have been reported, but none meet all of these requirements simultaneously. Our strategy for creating a material that does is centered on designing a crystalline molecular polyamine that retains porosity throughout CO2 absorption and desorption while achieving a high CO2 uptake capacity, thereby enabling meaningful CO2 capture and release under mild conditions. Here, we show that porous crystals of 2,3,6,7,14,15-hexakis(aminomethyl)triptycene (C20H8(CH2NH2)6, TriptH) capture CO2 from flue gas or air to form a porous ammonium carbamate network solid. The reversibility of the transformation is monitored in situ using powder X-ray diffraction, diffuse reflectance infrared Fourier transform spectroscopy, and solid-state nuclear magnetic resonance spectroscopy. Breakthrough analyses reveal that TriptH achieves a high CO2 capacity of 5.3 mmol\/g under humid conditions, long-term oxidative and thermal stability through the course of 660 absorption\u2013desorption cycles, and an unprecedented ability to capture CO2 from humid, low-concentration streams and release it with little or no temperature change and vacuum pressures as high as 100 mbar.<\/jats:p>","DOI":"10.1021\/jacs.6c12824","type":"journal-article","created":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T05:01:57Z","timestamp":1787029317000},"page":"37446-37457","source":"Crossref","is-referenced-by-count":0,"title":["Isothermal Capture\nand Release of Carbon Dioxide with\na Porous Molecular Hexaamine"],"prefix":"10.1021","volume":"148","author":[{"given":"Adrian J.","family":"Huang","sequence":"first","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"Lawrence Berkeley National Laboratory , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthew N.","family":"Dods","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryan A.","family":"Klein","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"National Institute of Standards and Technology , , , ,","place":["Gaithersburg, Maryland, United States, 20899"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Henry Z. H.","family":"Jiang","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"Lawrence Berkeley National Laboratory , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7208-6929","authenticated-orcid":true,"given":"Raynald","family":"Giovine","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Priya G.","family":"Patel","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6082-1738","authenticated-orcid":true,"given":"Hiroyasu","family":"Furukawa","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"Lawrence Berkeley National Laboratory , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8827-9688","authenticated-orcid":true,"given":"Sean","family":"Lubner","sequence":"additional","affiliation":[{"name":"Boston University , , , ,","place":["Boston, Massachusetts, United States, 02215"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5324-1321","authenticated-orcid":true,"given":"Jeffrey R.","family":"Long","sequence":"additional","affiliation":[{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"Lawrence Berkeley National Laboratory , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]},{"name":"University of California , , , ,","place":["Berkeley, California, United States, 94720"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,8,18]]},"reference":[{"key":"2026090312084047000_cit1","doi-asserted-by":"publisher","first-page":"11187","DOI":"10.1073\/pnas.1821029116","article-title":"Climate Change\nMitigation Potential of Carbon Capture and Utilization in the Chemical\nIndustry","volume":"116","author":"Ka\u0308telho\u0308n","year":"2019","journal-title":"Proc. Natl. Acad. Sci. U. S. A."},{"key":"2026090312084047000_cit2","volume-title":"Negative Emissions Technologies and Reliable Sequestration: A Research\nAgenda","author":"National Academies of Sciences, Engineering, and Medicine.","year":"2019"},{"key":"2026090312084047000_cit3","volume-title":"Climate\nChange 2021: The Physical Science\nBasis","author":"Masson-Delmotte","year":"2021"},{"key":"2026090312084047000_cit4","doi-asserted-by":"publisher","first-page":"102260","DOI":"10.1016\/j.jcou.2022.102260","article-title":"Research Progress\non CO2 Capture and Utilization Technology","volume":"66","author":"Fu","year":"2022","journal-title":"J. CO2 Util"},{"key":"2026090312084047000_cit5","unstructured":"The International Energy Agency.\n          \n          World Energy Outlook\n2025. https:\/\/www.iea.org\/reports\/world-energy-outlook-2025 (Accessed June 15, 2026)."},{"key":"2026090312084047000_cit6","unstructured":"The International Energy Agency.\n          \n          Global Energy Review\n2026. https:\/\/www.iea.org\/reports\/global-energy-review-2026 (Accessed June 15, 2026)."},{"key":"2026090312084047000_cit7","doi-asserted-by":"publisher","first-page":"1609","DOI":"10.1016\/j.cherd.2010.11.005","article-title":"Post-combustion\nCO2 capture with chemical absorption: A state-of-the-art\nreview Chem","volume":"89","author":"Wang","year":"2011","journal-title":"Eng. Res. Des"},{"key":"2026090312084047000_cit8","doi-asserted-by":"publisher","first-page":"787500","DOI":"10.3389\/fclim.2021.787500","article-title":"Inside-Out: Driving\nDown Direct Air Capture Costs with\nHigh-Efficiency Adsorbents","volume":"3","author":"Husk","year":"2022","journal-title":"Front. Clim"},{"key":"2026090312084047000_cit9","doi-asserted-by":"publisher","first-page":"744","DOI":"10.1039\/C3EE42328J","article-title":"Diamine-Functionalized\nMetal\u2013Organic Framework: Exceptionally High CO2 Capacities\nfrom Ambient Air and Flue Gas, Ultrafast CO2 Uptake Rate,\nand Adsorption Mechanism","volume":"7","author":"Lee","year":"2014","journal-title":"Energy Environ. Sci"},{"key":"2026090312084047000_cit10","doi-asserted-by":"publisher","first-page":"203","DOI":"10.1038\/s41560-020-00771-9","article-title":"Life-Cycle Assessment\nof an Industrial Direct Air Capture\nProcess Based on Temperature\u2013Vacuum Swing Adsorption","volume":"6","author":"Deutz","year":"2021","journal-title":"Nat. Energy"},{"key":"2026090312084047000_cit11","doi-asserted-by":"publisher","first-page":"96","DOI":"10.1038\/s41586-024-08080-x","article-title":"Carbon Dioxide Capture from Open\nAir Using Covalent Organic Frameworks","volume":"635","author":"Zhou","year":"2024","journal-title":"Nature"},{"key":"2026090312084047000_cit12","doi-asserted-by":"publisher","first-page":"35486","DOI":"10.1021\/jacs.4c14971","article-title":"Bonding\nof Polyethylenimine in Covalent\nOrganic Frameworks for CO2 Capture from Air","volume":"146","author":"Li","year":"2024","journal-title":"J. Am. Chem. 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Energy Res"},{"key":"2026090312084047000_cit20","doi-asserted-by":"publisher","first-page":"719","DOI":"10.1016\/j.chempr.2018.12.025","article-title":"CO2 Capture via Crystalline\nHydrogen-Bonded Bicarbonate Dimers","volume":"5","author":"Williams","year":"2019","journal-title":"Chem"},{"key":"2026090312084047000_cit21","doi-asserted-by":"publisher","first-page":"20428","DOI":"10.1021\/acsomega.0c02460","article-title":"Direct CO2 Capture from Air via Crystallization with a\nTrichelating Iminoguanidine\nLigand","volume":"5","author":"Cai","year":"2020","journal-title":"ACS Omega"},{"key":"2026090312084047000_cit22","doi-asserted-by":"publisher","first-page":"16748","DOI":"10.1039\/D4TA03037K","article-title":"Water-Enhanced CO2 Capture with Molecular Salt Sodium\nGuanidinate","volume":"12","author":"Evans","year":"2024","journal-title":"J. Mater. Chem. A"},{"key":"2026090312084047000_cit23","doi-asserted-by":"publisher","first-page":"9110","DOI":"10.1021\/acsapm.4c01454","article-title":"Glycidyl Ether-Functionalized\nPoly(ethylenimine)-Impregnated Sorbents for CO2 Capture\nfrom Ultradilute Sources","volume":"6","author":"Shaikh","year":"2024","journal-title":"ACS Appl. Polym. Mater"},{"key":"2026090312084047000_cit24","doi-asserted-by":"publisher","first-page":"2401422","DOI":"10.1002\/smll.202401422","article-title":"CO2 Uptake\nand Stability Enhancement in\nVinyltrimethoxysilane-Treated SBA-15 Solid Amine-Based Sorbents","volume":"20","author":"Vallace","year":"2024","journal-title":"Small"},{"key":"2026090312084047000_cit25","doi-asserted-by":"publisher","first-page":"9301","DOI":"10.1021\/jacs.6b05345","article-title":"A Fine-Tuned\nFluorinated\nMOF Addresses the Needs for Trace CO2 Removal and Air Capture\nUsing Physisorption","volume":"138","author":"Bhatt","year":"2016","journal-title":"J. Am. Chem. Soc"},{"key":"2026090312084047000_cit26","doi-asserted-by":"publisher","first-page":"303","DOI":"10.1038\/nature14327","article-title":"Cooperative\nInsertion of CO2 in Diamine-Appended Metal\u2013Organic\nFrameworks","volume":"519","author":"McDonald","year":"2015","journal-title":"Nature"},{"key":"2026090312084047000_cit27","doi-asserted-by":"publisher","first-page":"2642","DOI":"10.1021\/acs.accounts.3c00367","article-title":"Amine Chemistry\nof Porous CO2 Adsorbents","volume":"56","author":"Nguyen","year":"2023","journal-title":"Acc. Chem.\nRes"},{"key":"2026090312084047000_cit28","doi-asserted-by":"publisher","first-page":"10519","DOI":"10.1021\/jacs.4c18643","article-title":"Phase Change-Mediated\nCapture of Carbon Dioxide from Air with a Molecular Triamine Network\nSolid","volume":"147","author":"Huang","year":"2025","journal-title":"J. Am. Chem. Soc"},{"key":"2026090312084047000_cit29","doi-asserted-by":"publisher","first-page":"4544","DOI":"10.1039\/D4EE00616J","article-title":"Tuning Sorbent Properties to Reduce the Cost of Direct\nAir Capture","volume":"17","author":"Holmes","year":"2024","journal-title":"Energy Environ. Sci"},{"key":"2026090312084047000_cit30","doi-asserted-by":"publisher","first-page":"25761","DOI":"10.1021\/jacs.5c07551","article-title":"Mechanistic Studies of Oxidative Degradation in Diamine\nAppended Metal\u2013Organic Frameworks Exhibiting Cooperative CO2 Capture","volume":"147","author":"Xiong","year":"2025","journal-title":"J. Am. Chem. Soc"},{"key":"2026090312084047000_cit31","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202302887","article-title":"Insights\ninto the Oxidative Degradation Mechanism of Solid Amine Sorbents for\nCO2 Capture from Air: Roles of Atmospheric Water Angew","volume":"62","author":"Carneiro","year":"2023","journal-title":"Angew. Chem. Int. Ed"},{"key":"2026090312084047000_cit32","doi-asserted-by":"publisher","first-page":"139550","DOI":"10.1016\/j.cej.2022.139550","article-title":"CO2\/N2 Separation by Vacuum Swing Adsorption Using a Metal-Organic\nFramework, CALF-20: Multi-Objective Optimization and Experimental\nValidation","volume":"452","author":"Nguyen","year":"2023","journal-title":"Chem. Eng. J"},{"key":"2026090312084047000_cit33","doi-asserted-by":"crossref","first-page":"2293","DOI":"10.1038\/s41467-026-69006-x","article-title":"Nonporous Hydrophobic\nOrganic Crystals for Carbon Dioxide Capture via Chain-Melting Phase\nTransition","volume":"17","author":"Petrovic\u0301","year":"2026","journal-title":"Nat. Commun"},{"key":"2026090312084047000_cit34","doi-asserted-by":"publisher","first-page":"5252","DOI":"10.1002\/anie.201201174","article-title":"Rational Construction of an Extrinsic Porous Molecular\nCrystal with an Extraordinary High Specific Surface Area","volume":"51","author":"Mastalerz","year":"2012","journal-title":"Angew. Chem., Int. Ed"},{"key":"2026090312084047000_cit35","doi-asserted-by":"publisher","first-page":"10082","DOI":"10.1002\/chem.201201351","article-title":"Permanent\nPorous Materials from Discrete Organic Molecules\u2500Towards Ultra-High\nSurface Areas","volume":"18","author":"Mastalerz","year":"2012","journal-title":"Chem. Eur. J"},{"key":"2026090312084047000_cit36","doi-asserted-by":"publisher","first-page":"39351","DOI":"10.1021\/jacs.5c11317","article-title":"Polar TriptyceneBased\nNonmetal Organic Frameworks Show Enhanced Hydrogen Adsorption","volume":"147","author":"O\u2019Shaughnessy","year":"2025","journal-title":"J. Am. Chem. Soc."},{"key":"2026090312084047000_cit37","doi-asserted-by":"crossref","first-page":"2410","DOI":"10.3762\/bjoc.9.278","article-title":"Synthesis\nof Enantiopure Sugar-Decorated Six-Armed Triptycene Derivatives","volume":"9","author":"Bonaccorsi","year":"2013","journal-title":"Beilstein J. Org. Chem."},{"key":"2026090312084047000_cit38","doi-asserted-by":"publisher","first-page":"1000","DOI":"10.1126\/science.1077591","article-title":"Guest Transport\nin a Nonporous Organic Solid Via Dynamic Van Der Waals Cooperativity","volume":"298","author":"Atwood","year":"2002","journal-title":"Science"},{"key":"2026090312084047000_cit39","doi-asserted-by":"crossref","first-page":"146","DOI":"10.1038\/nmat2097","article-title":"Gas-Induced Transformation and Expansion of a Non-Porous\nOrganic Solid","volume":"7","author":"Thallapally","year":"2008","journal-title":"Nat. Mater"},{"key":"2026090312084047000_cit40","doi-asserted-by":"publisher","first-page":"10526","DOI":"10.1021\/jacs.7b05858","article-title":"Con-trolling\nCooperative CO2 Adsorption in Diamine-Appended Mg2(dobpdc) Metal\u2013Organic\nFrameworks","volume":"139","author":"Siegelman","year":"2017","journal-title":"J. Am. Chem. Soc."},{"key":"2026090312084047000_cit41","doi-asserted-by":"publisher","first-page":"3265","DOI":"10.1021\/acs.iecr.3c04266","article-title":"Competitive\nCO2\/H2O adsorption on CALF-20","volume":"63","author":"Nguyen","year":"2024","journal-title":"Ind. Eng. Chem. Res."}],"container-title":["Journal of the American\nChemical Society"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.acs.org\/doi\/pdf\/10.1021\/jacs.6c12824","content-type":"application\/pdf","content-version":"vor","intended-application":"unspecified"},{"URL":"https:\/\/pubs.acs.org\/jacsat\/article-pdf\/148\/34\/37446\/66739844\/jacs.6c12824.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.acs.org\/jacsat\/article-pdf\/148\/34\/37446\/66739844\/jacs.6c12824.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T16:25:15Z","timestamp":1788452715000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.acs.org\/jacsat\/article\/148\/34\/37446\/5268167\/Isothermal-Capture-and-Release-of-Carbon-Dioxide"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,8,18]]},"references-count":41,"journal-issue":{"issue":"34","published-online":{"date-parts":[[2026,8,18]]},"published-print":{"date-parts":[[2026,9,2]]}},"URL":"https:\/\/doi.org\/10.1021\/jacs.6c12824","relation":{},"ISSN":["0002-7863","1520-5126"],"issn-type":[{"value":"0002-7863","type":"print"},{"value":"1520-5126","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,8,18]]}}}