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Degenerate nanometer\u2010sized n\u2010type semiconductor nanoparticles (SCNPs) with the Fermi level above the bottom of the conduction band are strongly reducing and act more like metals than semiconductors. Application of the degenerate SCNPs is limited to few examples. Herein, we load microporous potassium poly(heptazine imide) (K\u2010PHI) nanoparticles with electrons (e<jats:sup>\u2012<\/jats:sup>) and charge balancing protons (H<jats:sup>+<\/jats:sup>) in an illumination phase using sacrificial agents. e<jats:sup>\u2012<\/jats:sup>\/H<jats:sup>+<\/jats:sup> in the K\u2010PHI nanoparticles are weakly bound and therefore could be used in a range of PCET reactions in dark, such as generation of aryl radicals from aryl halides, ketyl radicals from ketones, and 6e<jats:sup>\u2012<\/jats:sup>\/6H<jats:sup>+<\/jats:sup> reduction of nitrobenzene to aniline. The integration of several features that until now were intrinsic for plants and natural photosynthesis into a transition metal free nanomaterial composed of abundant elements (C, N, and K) offers a powerful tool for synthetic organic chemistry.<\/jats:p>","DOI":"10.1002\/exp.20210063","type":"journal-article","created":{"date-parts":[[2021,12,16]],"date-time":"2021-12-16T08:19:17Z","timestamp":1639642757000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["Multisite PCET with photocharged carbon nitride in dark"],"prefix":"10.1002","volume":"1","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8704-051X","authenticated-orcid":false,"given":"Stefano","family":"Mazzanti","sequence":"first","affiliation":[{"name":"Max\u2010Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry Research Campus Golm  Potsdam 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