{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,13]],"date-time":"2026-03-13T01:43:31Z","timestamp":1773366211829,"version":"3.50.1"},"reference-count":50,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2026,1,5]],"date-time":"2026-01-05T00:00:00Z","timestamp":1767571200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,1,5]],"date-time":"2026-01-05T00:00:00Z","timestamp":1767571200000},"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":["Small"],"published-print":{"date-parts":[[2026,2]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Mimicking the efficiency of natural photosynthesis for multielectron CO\n                    <jats:sub>2<\/jats:sub>\n                    photoreduction remains a central challenge in solar fuel research. Toward this goal, we developed herein a noble metal free supramolecular ion\u2010pair assembly comprising rhodamine B (\n                    <jats:bold>RB<\/jats:bold>\n                    ), an underexplored organic photosensitizer, and a cobalt(II) tris(2\u2010pyridylmethyl)amine complex (\n                    <jats:bold>1Co<\/jats:bold>\n                    ), which self\u2010assembles into core\u2013shell nano\/micro\u2010assembly via counterion\u2010mediated contact ion pairing. This confined ion pair architecture promotes counterion mediated, light\u2010driven hopping electron transfer, suppressing geminate recombination and enabling efficient charge migration, as demonstrated by optical spectroscopy, femtosecond\u2013nanosecond transient absorption, electrochemical impedance spectroscopy, and 2D mass spectrometry studies. Orthogonal dual\u2010light excitation activates radical anion excited states (RB\n                    <jats:sup>\u2022\u2212*<\/jats:sup>\n                    ) within the assembly, enabling a diffusion\u2010independent cascade electron transfer pathway. This unique approach achieves selective CO\n                    <jats:sub>2<\/jats:sub>\n                    photoreduction to syngas under single\u2010light irradiation and switches product distribution toward methane generation under dual\u2010light conditions\u2010 a rare feat for photocatalytic CO\n                    <jats:sub>2<\/jats:sub>\n                    reduction systems. This work introduces a generalizable supramolecular ion\u2010pairing strategy for engineering spatially preorganized donor\u2013acceptor architectures that harness high\u2010energy radical excited states for sustainable solar fuel generation.\n                  <\/jats:p>","DOI":"10.1002\/smll.202512072","type":"journal-article","created":{"date-parts":[[2026,1,5]],"date-time":"2026-01-05T14:22:42Z","timestamp":1767622962000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Supramolecular Nanoassemblies Harness Radical Excited\u2010State Cascade Electron Transfer for Selective CO\n                    <sub>2<\/sub>\n                    Photoreduction"],"prefix":"10.1002","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0359-0010","authenticated-orcid":false,"given":"Kumari","family":"Raksha","sequence":"first","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata  Kolkata India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-7525-1900","authenticated-orcid":false,"given":"Sakshi","family":"Chawla","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Mohali  Mohali India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sonu Pratap","family":"Chaudhary","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata  Kolkata India"},{"name":"Department of Chemistry T. 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College Patliputra University  Patna India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sourav","family":"Dutta","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata  Kolkata India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shibin","family":"Chacko","sequence":"additional","affiliation":[{"name":"Department of Chemistry Hislop College  Nagpur Maharashtra India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Javier P\u00e9rez","family":"Hern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Institute of Chemical Research of Catalonia (ICIQ) The Barcelona Institute of Science and Technology  Tarragona Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sumit","family":"Khanra","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata  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