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The introduction of copper cluster nanomaterials in more interesting fields is currently urgent and desired. Reported in this work are novel copper nanoclusters of [XCu<jats:sub>54<\/jats:sub>Cl<jats:sub>12<\/jats:sub>(<jats:sup>t<\/jats:sup>BuS)<jats:sub>20<\/jats:sub>(NO<jats:sub>3<\/jats:sub>)<jats:sub>12<\/jats:sub>] (X=S or none, <jats:sup>t<\/jats:sup>BuSH=2\u2010methyl\u20102\u2010propanethiol), which exhibit high performance in photothermal conversion. The clusters have been prepared in one pot and characterized by combinatorial techniques including ultraviolet\u2010visible spectroscopy (UV\u2010vis), electrospray ionization mass spectrometry (ESI\u2010MS), and X\u2010ray photoelectron spectroscopy (XPS). The molecular structure of the clusters, as revealed by single crystal X\u2010ray diffraction analysis (SCXRD), shows the concentric three\u2010shell Russian doll arrangement of X@Cu<jats:sub>14<\/jats:sub>@Cl<jats:sub>12<\/jats:sub>@Cu<jats:sub>40<\/jats:sub>. Interestingly, the [SCu<jats:sub>54<\/jats:sub>Cl<jats:sub>12<\/jats:sub>(<jats:sup>t<\/jats:sup>BuS)<jats:sub>20<\/jats:sub>(NO<jats:sub>3<\/jats:sub>)<jats:sub>12<\/jats:sub>] cluster contains 8 free valence electrons in its structure, making it the first eight\u2010electron copper nanocluster stabilized by thiolates. More impressively, the clusters possess an effective photothermal conversion (temperature increases by 71\u2009\u00b0C within ~50\u2005s, \u03bb<jats:sub>ex<\/jats:sub>=445\u2005nm, 0.5\u2005W\u2009cm<jats:sup>\u22122<\/jats:sup>) in a wide wavelength range (either blue or near\u2010infrared). The photothermal conversion can be even driven under irradiation of simulated sunlight (3 sun), endowing the clusters with great potency in solar energy utilization.<\/jats:p>","DOI":"10.1002\/chem.202400527","type":"journal-article","created":{"date-parts":[[2024,3,12]],"date-time":"2024-03-12T08:53:37Z","timestamp":1710233617000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Eight\u2010Electron Copper Nanoclusters for Photothermal Conversion"],"prefix":"10.1002","volume":"30","author":[{"given":"Xueli","family":"Sun","sequence":"first","affiliation":[{"name":"College of Energy Materials and Chemistry Inner Mongolia University College of Energy Materials and Chemistry Inner Mongolia University  Hohhot 010021 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bingzheng","family":"Yan","sequence":"additional","affiliation":[{"name":"College of Energy Materials and Chemistry Inner Mongolia 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