{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,9]],"date-time":"2026-01-09T15:35:07Z","timestamp":1767972907274,"version":"3.49.0"},"reference-count":45,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2015,2,27]],"date-time":"2015-02-27T00:00:00Z","timestamp":1424995200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["21475053"],"award-info":[{"award-number":["21475053"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Electrophoresis"],"published-print":{"date-parts":[[2015,3]]},"abstract":"<jats:p>A good understanding of the mechanism of interaction between quantum dots (QDs) and heavy metal ions is essential for the design of more effective sensor systems. In this work, CE was introduced to explore how <jats:sc>l<\/jats:sc>\u2010cysteine\u2010capped\u2010CdTe QDs (<jats:sc>l<\/jats:sc>\u2010cys\u2010CdTe QDs) interacts with Hg<jats:sup>2+<\/jats:sup>. The change in electrophoretic mobility can synchronously reflect the change in the composition and property of QDs. The effects of the free and capping ligands on the system are discussed in detail. ESI\u2010MS, dynamic light scattering (DLS), zeta potential, and fluorescence (FL) were also applied as cooperative tools to study the interaction mechanism. Furthermore, the interaction mechanism, which principally depended on the concentration of Hg<jats:sup>2+<\/jats:sup>, was proposed reasonably. At the low concentration of Hg<jats:sup>2+<\/jats:sup>, the formation of a static complex between Hg<jats:sup>2+<\/jats:sup> and the carboxyl and amino groups of <jats:sc>l<\/jats:sc>\u2010cys\u2010CdTe QDs surface was responsible for the FL quenching. With the increase of Hg<jats:sup>2+<\/jats:sup> concentration, the capping <jats:sc>l<\/jats:sc>\u2010cys was stripped from the surface of <jats:sc>l<\/jats:sc>\u2010cys\u2010CdTe QDs due to the high affinity of Hg<jats:sup>2+<\/jats:sup> to the thiol group of <jats:sc>l<\/jats:sc>\u2010cys. Our study demonstrates that CE can reveal the mechanism of the interaction between QDs and heavy metal ions, such as FL quenching.<\/jats:p>","DOI":"10.1002\/elps.201400509","type":"journal-article","created":{"date-parts":[[2014,12,27]],"date-time":"2014-12-27T08:53:21Z","timestamp":1419670401000},"page":"859-866","source":"Crossref","is-referenced-by-count":15,"title":["Probing the mechanism of the interaction between <scp>l<\/scp>\u2010cysteine\u2010capped\u2010CdTe quantum dots and Hg<sup>2+<\/sup> using capillary electrophoresis with ensemble techniques"],"prefix":"10.1002","volume":"36","author":[{"given":"Laifang","family":"Xu","sequence":"first","affiliation":[{"name":"State Key Laboratory of Applied Organic Chemistry Lanzhou University  Lanzhou China"},{"name":"Department of Chemistry Lanzhou University  Lanzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Junjie","family":"Hao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of 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