Zitieren Sie bitte immer diesen URN: urn:nbn:de:kobv:b43-634825
Hydrothermal microwave synthesis of water soluble NIR-II emitting Ag2S quantum dots
- Hydrothermal-based synthetic methods of quantum dots allow for the exploration of reaction parameters normally inaccessible to typical aqueous-based batch reactions, such as elevated reaction temperatures (>100 °C) and reaction pressures above atmospheric pressure. Coupled with microwave heating, new instantaneously bio-compatible quantum dots (QDs) with enhanced opitcal properties can be yielded. As of today, aqueous-based synthetic methods often lag behind their organic analogues in terms of the photophysical properties of the QDs obtained and the ease of modulation of both the emission wavelength and crystallite size. Using a novel microwave-assisted hydrothermal approach, the synthesis of silver sulphide (Ag2S) QDs exhibiting NIR emission spanning the biological transparency windows via modulation of the reaction parameters has been developed. The intrinsic link between their optical and structural properties is explored via laboratory and synchrotron-based structural analysisHydrothermal-based synthetic methods of quantum dots allow for the exploration of reaction parameters normally inaccessible to typical aqueous-based batch reactions, such as elevated reaction temperatures (>100 °C) and reaction pressures above atmospheric pressure. Coupled with microwave heating, new instantaneously bio-compatible quantum dots (QDs) with enhanced opitcal properties can be yielded. As of today, aqueous-based synthetic methods often lag behind their organic analogues in terms of the photophysical properties of the QDs obtained and the ease of modulation of both the emission wavelength and crystallite size. Using a novel microwave-assisted hydrothermal approach, the synthesis of silver sulphide (Ag2S) QDs exhibiting NIR emission spanning the biological transparency windows via modulation of the reaction parameters has been developed. The intrinsic link between their optical and structural properties is explored via laboratory and synchrotron-based structural analysis techniques. Their toxicity towards a hepatic cell line was assessed, and related back to their structure and size. Overall this work aims to not only further develop the repertoire of synthetic methods for the synthesis of Ag2S QDs, but also paves the way for the development of safer QDs suitable for future clinical applications.…


| Autor*innen: | O. El-Dahshan, A. Deniaud, W. L. Ling, Karl David WegnerORCiD, O. Proux, G. Veronesi, P. Reiss |
|---|---|
| Dokumenttyp: | Zeitschriftenartikel |
| Veröffentlichungsform: | Verlagsliteratur |
| Sprache: | Englisch |
| Titel des übergeordneten Werkes (Englisch): | Nanoscale |
| Jahr der Erstveröffentlichung: | 2025 |
| Organisationseinheit der BAM: | 1 Analytische Chemie; Referenzmaterialien |
| 1 Analytische Chemie; Referenzmaterialien / 1.2 Biophotonik | |
| Veröffentlichende Institution: | Bundesanstalt für Materialforschung und -prüfung (BAM) |
| Verlag: | RSC |
| Jahrgang/Band: | 17 |
| Ausgabe/Heft: | 24 |
| Erste Seite: | 14637 |
| Letzte Seite: | 14646 |
| DDC-Klassifikation: | Naturwissenschaften und Mathematik / Chemie / Analytische Chemie |
| Freie Schlagwörter: | Ag2S; Microwave synthesis; NIR-II emission; PL quantum yield; Quality assurance; Quantum dots |
| Themenfelder/Aktivitätsfelder der BAM: | Chemie und Prozesstechnik |
| Chemie und Prozesstechnik / Chemische Charakterisierung und Spurenanalytik | |
| Material | |
| Material / Advanced Materials | |
| DOI: | 10.1039/d5nr00052a |
| URN: | urn:nbn:de:kobv:b43-634825 |
| ISSN: | 2040-3372 |
| Verfügbarkeit des Dokuments: | Datei für die Öffentlichkeit verfügbar ("Open Access") |
| Lizenz (Deutsch): | Creative Commons - CC BY - Namensnennung 4.0 International |
| Datum der Freischaltung: | 25.06.2025 |
| Referierte Publikation: | Ja |
| Datum der Eintragung als referierte Publikation: | 25.06.2025 |
| Schriftenreihen ohne Nummerierung: | Wissenschaftliche Artikel der BAM |


