{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T10:07:31Z","timestamp":1753870051448,"version":"3.41.2"},"reference-count":44,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2022,4,30]],"date-time":"2022-04-30T00:00:00Z","timestamp":1651276800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Peptide Science"],"published-print":{"date-parts":[[2022,10]]},"abstract":"<jats:p>Cheap artificial light harvesting systems, which competently harvest solar energy and promote efficient energy transfer, are highly sought after in the renewable sector. We report the synthesis of self\u2010assembled peptide\u2010porphyrin fibers (<jats:bold>SJ 6<\/jats:bold>) fabricated with iron(III) oxide (Fe<jats:sub>3<\/jats:sub>O<jats:sub>4<\/jats:sub>) nanoparticles as feasible electron acceptors. Charge\u2010complementarity between the negatively charged peptide (<jats:bold>20E<\/jats:bold>) and the protonated Zn\u2010tetraphenyl porphyrin (ZnTPyP) led to an ordered assembly of the ZnTPyP molecules, enabling efficient light harvesting. X\u2010ray diffraction data indicates a more ordered structure in <jats:bold>SJ 6<\/jats:bold> compared to <jats:bold>20E<\/jats:bold> and ZnTPyP. The incorporation of Fe<jats:sub>3<\/jats:sub>O<jats:sub>4<\/jats:sub> nanoparticles into <jats:bold>SJ 6<\/jats:bold> showed significant fluorescence quenching, indicating efficient electron flow from the donor to the acceptor. The <jats:bold>SJ 6\u2010<\/jats:bold>nFe<jats:sub>3<\/jats:sub>O<jats:sub>4<\/jats:sub> system performed the light reaction of photosynthesis as confirmed by the reduction of 1 mM NAD<jats:sup>+<\/jats:sup> to 0.180 mM NADH upon exposure to visible light (Xe lamp <jats:italic>\u03bb<\/jats:italic>\u2009&gt;\u2009420\u2009nm) for 1\u2009h. The photochemical regeneration of NADH using the <jats:bold>SJ 6\u2010<\/jats:bold>nFe<jats:sub>3<\/jats:sub>O<jats:sub>4<\/jats:sub> system was coupled to glutamate dehydrogenase\u2010catalyzed conversion of \u03b1\u2010ketoglutarate to L\u2010glutamate. These results confirm the successful synthesis of an artificial light harvesting peptide\u2010porphyrin system with Fe<jats:sub>3<\/jats:sub>O<jats:sub>4<\/jats:sub> nanoparticles as promising low\u2010cost electron separators.<\/jats:p>","DOI":"10.1002\/psc.3413","type":"journal-article","created":{"date-parts":[[2022,4,21]],"date-time":"2022-04-21T07:26:25Z","timestamp":1650525985000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Toward cheaper light harvesting systems: Using earth\u2010abundant metal oxide nanoparticles in self\u2010assembled peptide\u2010porphyrin nanofibers"],"prefix":"10.1002","volume":"28","author":[{"given":"Saurabh","family":"Lamba","sequence":"first","affiliation":[{"name":"School of Chemical Sciences The University of Auckland  Auckland New Zealand"},{"name":"The MacDiarmid Institute for Advanced Materials and Nanotechnology  Wellington New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shinji","family":"Kihara","sequence":"additional","affiliation":[{"name":"School of Chemical Sciences The University of Auckland  Auckland New Zealand"},{"name":"The MacDiarmid Institute for Advanced Materials and Nanotechnology  Wellington New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eddie Wai Chi","family":"Chan","sequence":"additional","affiliation":[{"name":"School of Chemical Sciences The University of Auckland  Auckland New Zealand"},{"name":"The MacDiarmid Institute for Advanced Materials and Nanotechnology  Wellington New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Duncan","family":"McGillivray","sequence":"additional","affiliation":[{"name":"School of Chemical Sciences The University of Auckland  Auckland New Zealand"},{"name":"The MacDiarmid Institute for Advanced Materials and Nanotechnology  Wellington New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Geoffrey I. 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