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In this study, penicillamine\u2010protected gold nanoclusters (Pen\u2010AuNCs) were synthesized and initially fractionated by sequential size\u2010selective precipitation (SSSP). The crude Pen\u2010AuNCs and SSSP fractions were separated by capillary zone electrophoresis (CZE) with a diode array detector. The effects of key parameters, including the concentration of phosphate buffer, pH value and the ethanol content were systematically investigated. The separation of water\u2010soluble poly\u2010disperse AuNCs were well achieved at 30 mM phosphate buffer with 7.5% EtOH, pH 12.0, and applied voltage of 15 kV. The linear correlation between AuNCs diameter and mobility was observed. This finding provides an important reference for CE separation and product purification of water\u2010soluble AuNCs or other nanomaterials.<\/jats:p>","DOI":"10.1002\/elps.201800347","type":"journal-article","created":{"date-parts":[[2019,1,25]],"date-time":"2019-01-25T04:45:09Z","timestamp":1548391509000},"page":"1345-1352","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Size\u2010dependent electrophoretic migration and separation of water\u2010soluble gold nanoclusters by capillary electrophoresis"],"prefix":"10.1002","volume":"40","author":[{"given":"Ting","family":"Wan","sequence":"first","affiliation":[{"name":"Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering China West Normal University  Nanchong P. R. 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