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A particularly exciting opportunity is associated with the highly potent reduction power of the photogenerated electrons in ZnSe QDs, owing to their large bandgap and high\u2010energy conduction\u2010band electrons. These properties enabled efficient hydrated electron generation in Mn\n                    <jats:sup>2+<\/jats:sup>\n                    \u2010doped ZnSe QDs through spin\u2010exchange Auger recombination mechanism. Here, we report for the first time that hydrated electrons can be also generated in undoped plain ZnSe QDs, originating from their exceptionally rapid multiexciton Auger recombination. We study size\u2010dependent Auger recombination in monodisperse ZnSe QDs using transient absorption spectroscopy and identify biexciton lifetimes (\u03c4\n                    <jats:sub>XX<\/jats:sub>\n                    ) shorter than those of comparable\u2010size CdSe QDs by almost 10\u2010fold. Importantly, we find the volume\u2010scaling law of \u03c4\n                    <jats:sub>XX<\/jats:sub>\n                    that holds in hexane phase breaks down in aqueous phase for the small\u2010size regime, highlighting the crucial role of the dielectric confinement effect in Auger processes. Transient absorption spectra also reveal size\u2010dependent thresholds for photoemission of free electrons, with smaller QDs requiring fewer excitons due to their faster Auger recombination. In water, photoemission generates hydrated electrons with quantum yield exceeding 3%.\n                  <\/jats:p>","DOI":"10.1002\/anie.3827650","type":"journal-article","created":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T04:02:02Z","timestamp":1788926522000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Exploiting Ultrafast Auger Recombination in Colloidal ZnSe Quantum Dots for Photoemission and Hydrated Electron Generation"],"prefix":"10.1002","volume":"65","author":[{"given":"Meng","family":"Yao","sequence":"first","affiliation":[{"name":"State Key Laboratory of Chemical Reaction Dynamics and New Cornerstone Science Laboratory Dalian Institute of Chemical Physics Chinese Academy of Sciences  Dalian P. R. China"},{"name":"University of Chinese Academy of Sciences  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuyang","family":"Lin","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Reaction Dynamics and New Cornerstone Science Laboratory Dalian Institute of Chemical Physics Chinese Academy of Sciences  Dalian P. R. China"},{"name":"University of Chinese Academy of Sciences  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0519-4724","authenticated-orcid":false,"given":"Jingyi","family":"Zhu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Reaction Dynamics and New Cornerstone Science Laboratory Dalian Institute of Chemical Physics Chinese Academy of Sciences  Dalian P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1047-6606","authenticated-orcid":false,"given":"Kaifeng","family":"Wu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Chemical Reaction Dynamics and New Cornerstone Science Laboratory Dalian Institute of Chemical Physics Chinese Academy of Sciences  Dalian P. R. China"},{"name":"University of Chinese Academy of Sciences  Beijing P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,8]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586\u2010025\u201008645\u20104"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41566\u2010025\u201001716\u2010y"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586\u2010020\u20102791\u2010x"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010025\u201064994\u20108"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.5c18414"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.nanolett.1c02284"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586\u2010019\u20101771\u20105"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41560\u2010020\u20100617\u20106"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/s12274\u2010020\u20102703\u20102"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s12274\u2010013\u20100341\u20107"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.nanolett.9b05020"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1038\/s44160\u2010022\u201000210\u20105"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsenergylett.2c00017"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.5c00138"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41565\u2010024\u201001812\u20100"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/lpor.202301167"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/lpor.202200557"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.200801016"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1002\/smll.200800841"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202213065"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpclett.1c01717"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.5c09882"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010025\u201060659\u20108"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41566\u2010022\u201000989\u2010x"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41565\u2010019\u20100548\u20101"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.60.13740"},{"key":"e_1_2_8_28_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.80.4028"},{"key":"e_1_2_8_29_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202408687"},{"key":"e_1_2_8_30_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.2c03235"},{"key":"e_1_2_8_31_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.287.5455.1011"},{"key":"e_1_2_8_32_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsnano.7b04079"},{"key":"e_1_2_8_33_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.91.056404"},{"key":"e_1_2_8_34_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpclett.1c03478"},{"key":"e_1_2_8_35_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.0c00931"},{"key":"e_1_2_8_36_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.102.177404"},{"key":"e_1_2_8_37_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.6b00169"},{"key":"e_1_2_8_38_1","doi-asserted-by":"publisher","DOI":"10.1039\/D4NR01507J"},{"key":"e_1_2_8_39_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010022\u201035702\u20107"},{"key":"e_1_2_8_40_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010019\u201013437\u20102"},{"key":"e_1_2_8_41_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.5109894"},{"key":"e_1_2_8_42_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202004668"},{"key":"e_1_2_8_43_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev\u2010conmatphys\u2010031113\u2010133900"},{"key":"e_1_2_8_44_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.3561063"},{"key":"e_1_2_8_45_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpcc.8b11218"},{"key":"e_1_2_8_46_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.290.5490.314"},{"key":"e_1_2_8_47_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.102.127404"},{"key":"e_1_2_8_48_1","doi-asserted-by":"publisher","DOI":"10.1038\/nnano.2017.189"},{"key":"e_1_2_8_49_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41563\u2010024\u201002048\u2010y"},{"key":"e_1_2_8_50_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.68.245302"},{"key":"e_1_2_8_51_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.2766957"},{"key":"e_1_2_8_52_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.77.195324"},{"key":"e_1_2_8_53_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chemphys.2005.05.036"},{"key":"e_1_2_8_54_1","doi-asserted-by":"publ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