發(fā)光硅納米晶體作為金屬離子傳感器
Luminescent Silicon Nanocrystals as Metal Ion Sensors
作者：Benjamin J. Stacy;Kara Nagasaki;Brian A. Korgel;
DOI：https://doi.org/10.1021/acsnano.4c02309
發(fā)表時(shí)間：2024年
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摘要
摘要點(diǎn)擊復(fù)制章節(jié)鏈接章節(jié)鏈接已復(fù)制！在水溶液中，相對(duì)較低的濃度下，F(xiàn)e3+、Fe2+、Cu2+ 和 Ni2+ 會(huì)猝滅十一烯酸覆蓋的硅 (Si) 納米晶體的光致發(fā)光 (PL)?？梢酝ㄟ^添加螯合劑（如乙二胺四乙酸 (EDTA)）去除離子來(lái)恢復(fù) PL。Fe3+ 和 Cu2+ 也會(huì)顯著增加 PL 壽命。其他金屬離子，包括 Cd2+、Mn2+、Pb2+、Zn2+、In3+、K+ 和 Ca2+，對(duì) Si 納米晶體 PL 沒有影響。 Fe3+ 和 Cu2+ 的檢測(cè)限 (LOD) 分別為 370 和 150 nM，對(duì)于金屬離子傳感應(yīng)用來(lái)說(shuō)足夠低。ACS 出版物版權(quán)所有 2024 美國(guó)化學(xué)學(xué)會(huì) 主題什么是主題文章主題自動(dòng)從 ACS 主題分類法中應(yīng)用，并描述文章的科學(xué)概念和主題。離子金屬納米晶體淬火硅 關(guān)鍵詞什么是關(guān)鍵詞 文章關(guān)鍵詞由作者提供，突出顯示論文的關(guān)鍵術(shù)語(yǔ)和主題。 硅納米晶體 硅量子點(diǎn) p
Abstract
AbstractClick to copy section linkSection link copied!At relatively low concentrations in aqueous solution, Fe3+, Fe2+, Cu2+, and Ni2+ quench the photoluminescence (PL) of the undecenoic acid-capped silicon (Si) nanocrystals. The PL could be restored by adding a chelating agent, such as ethylenediaminetetraacetic acid (EDTA), to remove the ions. Fe3+ and Cu2+ also significantly increase the PL lifetime. Other metal ions, including Cd2+, Mn2+, Pb2+, Zn2+, In3+, K+, and Ca2+, had no effect on the Si nanocrystal PL. The limits of detection (LODs) for Fe3+ and Cu2+ of 370 and 150 nM, respectively, are low enough for metal ion sensing applications.ACS PublicationsCopyright ? 2024 American Chemical Society Subjectswhat are subjectsArticle subjects are automatically applied from the ACS Subject Taxonomy and describe the scientific concepts and themes of the article.IonsMetalsNanocrystalsQuenchingSilicon Keywordswhat are keywords Article keywords are supplied by the authors and highlight key terms and topics of the paper. silicon nanocrystal silicon quantum dot photoluminescence sensors metal ions
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