{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,26]],"date-time":"2025-10-26T14:49:03Z","timestamp":1761490143342,"version":"build-2065373602"},"reference-count":37,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2016,11,18]],"date-time":"2016-11-18T00:00:00Z","timestamp":1479427200000},"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":"publisher","award":["20905008"],"award-info":[{"award-number":["20905008"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Luminescence"],"published-print":{"date-parts":[[2017,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Core\u2013shell structured quantum dot (QD)\u2013silica fluorescent nanoparticles have attracted a great deal of attention due to the excellent optical properties of QDs and the stability of silica. In this study, core\u2013shell structured CdTe\/CdS@SiO<jats:sub>2<\/jats:sub>@CdTe@SiO<jats:sub>2<\/jats:sub> fluorescent nanospheres were synthesized based on the St\u00f6ber method using multistep silica encapsulation. The second silica layer on the CdTe QDs maintained the optical stability of nanospheres and decreased adverse influences on the probe during subsequent processing. Red\u2010emissive CdTe\/CdS QDs (630\u00a0nm) were used as a built\u2010in reference signal and green\u2010emissive CdTe QDs (550\u00a0nm) were used as a responding probe. The fluorescence of CdTe QDs was greatly quenched by added S<jats:sup>2<\/jats:sup><jats:sup>\u2212<\/jats:sup>, owing to a S<jats:sup>2<\/jats:sup><jats:sup>\u2212<\/jats:sup>\u2010induced change in the CdTe QDs surface state in the shell. Upon addition of Cd<jats:sup>2<\/jats:sup><jats:sup>+<\/jats:sup> to the S<jats:sup>2<\/jats:sup><jats:sup>\u2212<\/jats:sup>\u2010quenched CdTe\/CdS@SiO<jats:sub>2<\/jats:sub>@CdTe@SiO<jats:sub>2<\/jats:sub> system, the responding signal at 550\u00a0nm was dramatically restored, whereas the emission at 630\u00a0nm remained almost unchanged; this response could be used as a ratiometric \u2018off\u2013on\u2019 fluorescent probe for the detection of Cd<jats:sup>2<\/jats:sup><jats:sup>+<\/jats:sup>. The sensing mechanism was suggested to be: the newly formed CdS\u2010like cluster with a higher band gap facilitated exciton\/hole recombination and effectively enhanced the fluorescence of the CdTe QDs. The proposed probe shows a highly sensitive and selective response to Cd<jats:sup>2<\/jats:sup><jats:sup>+<\/jats:sup> and has potential application in the detection of Cd<jats:sup>2<\/jats:sup><jats:sup>+<\/jats:sup> in environmental or biological samples.<\/jats:p>","DOI":"10.1002\/bio.3242","type":"journal-article","created":{"date-parts":[[2016,11,18]],"date-time":"2016-11-18T04:47:41Z","timestamp":1479444461000},"page":"723-729","source":"Crossref","is-referenced-by-count":11,"title":["Core\u2013shell structured CdTe\/CdS@SiO<sub>2<\/sub>@CdTe@SiO<sub>2<\/sub> composite fluorescent spheres: Synthesis and application for Cd<sup>2<\/sup><sup>+<\/sup> detection"],"prefix":"10.1002","volume":"32","author":[{"given":"Fang","family":"Liu","sequence":"first","affiliation":[{"name":"College of Chemistry Beijing Normal University  Beijing People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shujia","family":"Li","sequence":"additional","affiliation":[{"name":"College of Chemistry Beijing Normal University  Beijing People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ruoxin","family":"Hu","sequence":"additional","affiliation":[{"name":"College of Chemistry Beijing Normal University  Beijing People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Na","family":"Shao","sequence":"additional","affiliation":[{"name":"College of Chemistry Beijing Normal University  Beijing People's Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2016,11,18]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja037088b"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.372177"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1039\/C3CS60273G"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/bio.1029"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1021\/jp905695f"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1021\/jp025541k"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.bios.2015.09.034"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1021\/ar600032u"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1039\/C4RA04925J"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1039\/c1cc11070e"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10534-004-5787-3"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.fct.2013.05.059"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1383-5718(03)00167-0"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.talanta.2008.01.008"},{"key":"e_1_2_7_16_1","first-page":"901","volume":"60","author":"Sari S.","year":"2013","journal-title":"Acta Chim. 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