Synthesis and optical characterization of thermosensitive, luminescent gold nanodots
- A facile one-pot synthesis for preparing thermosensitive, luminescent gold nanodots with diameters of 1-2 nm is presented. The influence of the alkyl chain length of the surface ligands (alkyl thiols) on the optical properties of the gold nanodots was investigated. The synthesized gold nanodots show strong thermosensitive photoluminescence. A photoluminescence quantum yield of 16.6% was observed at room temperature, which could be improved to a value of 28.6% when cooling the gold nanodot solutions to -7 degrees C. The synthesized thermosensitive, luminescent gold nanodots are interesting candidates for optoelectronic devices, medical imaging, sensing, or security labels.
Author details: | Jana Bomm, Christina GünterGND, Joachim Stumpe |
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DOI: | https://doi.org/10.1021/jp206260r |
ISSN: | 1932-7447 |
Title of parent work (English): | The journal of physical chemistry : C, Nanomaterials and interfaces |
Publisher: | American Chemical Society |
Place of publishing: | Washington |
Publication type: | Article |
Language: | English |
Year of first publication: | 2012 |
Publication year: | 2012 |
Release date: | 2017/03/26 |
Volume: | 116 |
Issue: | 1 |
Number of pages: | 5 |
First page: | 81 |
Last Page: | 85 |
Funding institution: | Fraunhofer Secure Identity Innovation Cluster |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geowissenschaften |
Peer review: | Referiert |
Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Erd- und Umweltwissenschaften |