Highly Luminescent and Photostable Core/Shell/Shell ZnSeS/Cu:ZnS/ZnS Quantum Dots Prepared via a Mild Aqueous Route
An aqueous-phase synthesis of 3-mercaptopropionic acid (3-MPA)-capped core/shell/shell ZnSeS/Cu:ZnS/ZnS QDs was developed. The influence of the Cu-dopant location on the photoluminescence (PL) emission intensity was investigated, and the results show that the introduction of the Cu dopant in the fir...
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MDPI AG
2022-09-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/18/3254 |
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| author | Salima Mabrouk Hervé Rinnert Lavinia Balan Jordane Jasniewski Sébastien Blanchard Ghouti Medjahdi Rafik Ben Chaabane Raphaël Schneider |
| author_facet | Salima Mabrouk Hervé Rinnert Lavinia Balan Jordane Jasniewski Sébastien Blanchard Ghouti Medjahdi Rafik Ben Chaabane Raphaël Schneider |
| author_sort | Salima Mabrouk |
| collection | DOAJ |
| description | An aqueous-phase synthesis of 3-mercaptopropionic acid (3-MPA)-capped core/shell/shell ZnSeS/Cu:ZnS/ZnS QDs was developed. The influence of the Cu-dopant location on the photoluminescence (PL) emission intensity was investigated, and the results show that the introduction of the Cu dopant in the first ZnS shell leads to QDs exhibiting the highest PL quantum yield (25%). The influence of the Cu-loading in the dots on the PL emission was also studied, and a shift from blue–green to green was observed with the increase of the Cu doping from 1.25 to 7.5%. ZnSeS/Cu:ZnS/ZnS QDs exhibit an average diameter of 2.1 ± 0.3 nm and are stable for weeks in aqueous solution. Moreover, the dots were found to be photostable under the continuous illumination of an Hg–Xe lamp and in the presence of oxygen, indicating their high potential for applications such as sensing or bio-imaging. |
| first_indexed | 2024-03-09T22:57:19Z |
| format | Article |
| id | doaj.art-a1e4c412df504050875323be434c3114 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T22:57:19Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-a1e4c412df504050875323be434c31142023-11-23T18:08:12ZengMDPI AGNanomaterials2079-49912022-09-011218325410.3390/nano12183254Highly Luminescent and Photostable Core/Shell/Shell ZnSeS/Cu:ZnS/ZnS Quantum Dots Prepared via a Mild Aqueous RouteSalima Mabrouk0Hervé Rinnert1Lavinia Balan2Jordane Jasniewski3Sébastien Blanchard4Ghouti Medjahdi5Rafik Ben Chaabane6Raphaël Schneider7Université de Lorraine, CNRS, LRGP, F-54000 Nancy, FranceUniversité de Lorraine, CNRS, IJL, F-54000 Nancy, FranceCEMHTI-UPR 3079 CNRS, Site Haute Température, 1D Avenue de la Recherche Scientifique, 45071 Orléans, FranceUniversité de Lorraine, LIBio, F-54000 Nancy, FranceSorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, F-75005 Paris, FranceUniversité de Lorraine, CNRS, IJL, F-54000 Nancy, FranceLaboratoire Interfaces et Matériaux Avancés, LIMA, LR011ES55, Faculté des Sciences de Monastir, Avenue de l’Environnement, Monastir 5019, TunisiaUniversité de Lorraine, CNRS, LRGP, F-54000 Nancy, FranceAn aqueous-phase synthesis of 3-mercaptopropionic acid (3-MPA)-capped core/shell/shell ZnSeS/Cu:ZnS/ZnS QDs was developed. The influence of the Cu-dopant location on the photoluminescence (PL) emission intensity was investigated, and the results show that the introduction of the Cu dopant in the first ZnS shell leads to QDs exhibiting the highest PL quantum yield (25%). The influence of the Cu-loading in the dots on the PL emission was also studied, and a shift from blue–green to green was observed with the increase of the Cu doping from 1.25 to 7.5%. ZnSeS/Cu:ZnS/ZnS QDs exhibit an average diameter of 2.1 ± 0.3 nm and are stable for weeks in aqueous solution. Moreover, the dots were found to be photostable under the continuous illumination of an Hg–Xe lamp and in the presence of oxygen, indicating their high potential for applications such as sensing or bio-imaging.https://www.mdpi.com/2079-4991/12/18/3254core/shell/shell ZnSeS/Cu:ZnS/ZnS quantum dotsdopant locationoptoelectronic properties(photo)stability |
| spellingShingle | Salima Mabrouk Hervé Rinnert Lavinia Balan Jordane Jasniewski Sébastien Blanchard Ghouti Medjahdi Rafik Ben Chaabane Raphaël Schneider Highly Luminescent and Photostable Core/Shell/Shell ZnSeS/Cu:ZnS/ZnS Quantum Dots Prepared via a Mild Aqueous Route Nanomaterials core/shell/shell ZnSeS/Cu:ZnS/ZnS quantum dots dopant location optoelectronic properties (photo)stability |
| title | Highly Luminescent and Photostable Core/Shell/Shell ZnSeS/Cu:ZnS/ZnS Quantum Dots Prepared via a Mild Aqueous Route |
| title_full | Highly Luminescent and Photostable Core/Shell/Shell ZnSeS/Cu:ZnS/ZnS Quantum Dots Prepared via a Mild Aqueous Route |
| title_fullStr | Highly Luminescent and Photostable Core/Shell/Shell ZnSeS/Cu:ZnS/ZnS Quantum Dots Prepared via a Mild Aqueous Route |
| title_full_unstemmed | Highly Luminescent and Photostable Core/Shell/Shell ZnSeS/Cu:ZnS/ZnS Quantum Dots Prepared via a Mild Aqueous Route |
| title_short | Highly Luminescent and Photostable Core/Shell/Shell ZnSeS/Cu:ZnS/ZnS Quantum Dots Prepared via a Mild Aqueous Route |
| title_sort | highly luminescent and photostable core shell shell znses cu zns zns quantum dots prepared via a mild aqueous route |
| topic | core/shell/shell ZnSeS/Cu:ZnS/ZnS quantum dots dopant location optoelectronic properties (photo)stability |
| url | https://www.mdpi.com/2079-4991/12/18/3254 |
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