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The syntheses involve reacting an organo\u2010copper precursor, mesitylcopper(I) [CuMes]<jats:sub>z<\/jats:sub> (z=4, 5), at low temperatures and in organic solvents, with hydrogen, air or hydrogen sulfide to deliver Cu, Cu<jats:sub>2<\/jats:sub>O or Cu<jats:sub>2<\/jats:sub>S nanoparticles. Use of sub\u2010stoichiometric quantities of protonated ligand (pro\u2010ligand; 0.1\u20130.2\u2005equivalents vs. [CuMes]<jats:sub>z<\/jats:sub>) allows saturation of surface coordination sites but avoids excess pro\u2010ligand contaminating the nanoparticle solutions. The pro\u2010ligands are nonanoic acid (HO<jats:sub>2<\/jats:sub>CR<jats:sup>1<\/jats:sup>), 2\u2010[2\u2010(2\u2010methoxyethoxy)ethoxy]acetic acid (HO<jats:sub>2<\/jats:sub>CR<jats:sup>2<\/jats:sup>) or di(thio)nonanoic acid, (HS<jats:sub>2<\/jats:sub>CR<jats:sup>1<\/jats:sup>), and are matched to the metallic, oxide or sulfide nanoparticles. Ligand exchange reactions reveal that copper(0) nanoparticles may be coordinated by carboxylate or di(thio)carboxylate ligands, but Cu<jats:sub>2<\/jats:sub>O is preferentially coordinated by carboxylate ligands and Cu<jats:sub>2<\/jats:sub>S by di(thio)carboxylate ligands. This work highlights the opportunities for organometallic routes to well\u2010defined nanoparticles and the need for appropriate ligand selection.<\/jats:p>","DOI":"10.1002\/chem.202300228","type":"journal-article","created":{"date-parts":[[2023,4,20]],"date-time":"2023-04-20T10:47:07Z","timestamp":1681987627000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Matched Ligands for Small, Stable Colloidal Nanoparticles of Copper, Cuprous Oxide and Cuprous Sulfide"],"prefix":"10.1002","volume":"29","author":[{"given":"Bradley E.","family":"Cowie","sequence":"first","affiliation":[{"name":"Department of Chemistry University of Oxford, Chemistry Research Laboratory  12 Mansfield Road Oxford OX1 3TA UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lisa","family":"H\u00e4fele","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Oxford, Chemistry Research Laboratory  12 Mansfield Road Oxford OX1 3TA UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreas","family":"Phanopoulos","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Oxford, Chemistry Research Laboratory  12 Mansfield Road Oxford OX1 3TA UK"},{"name":"Department of Chemistry, Department of Materials Imperial College London  London SW7 2AZ UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Said A.","family":"Said","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of Oxford, Chemistry Research Laboratory  12 Mansfield Road Oxford OX1 3TA UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ja Kyung","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Department of Materials Imperial College London  London SW7 2AZ UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Regoutz","sequence":"additional","affiliation":[{"name":"Department of Chemistry University College London  20 Gordon Street London WC1H 0AJ UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Milo S. 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