標題: | Optical properties of gold particle-cluster core-satellite nanoassemblies |
作者: | Yu, Pyng Wen, Xiaoming Toh, Yon-Rui Lee, Yu-Chieh Tang, Jau 光電工程學系 Department of Photonics |
公開日期: | 2013 |
摘要: | Better understanding of core-satellite nanostructures is of great interest to researchers owing to their unusual properties and is key to their promising applications. The well-developed techniques based on protein-nanoparticle interactions were adopted to produce core-satellite nanoassemblies of similar to 10 nm core of Au nanoparticles (AuNPs) covered by Au-25@BSA or Au-10@histidine nanoclusters (NCs). The photoexcited dynamics in the core-satellite nanoassemblies were studied using steady-state and time-resolved spectroscopic measurements. Fluorescence quenching in AuNP-AuNCs core-satellite nanostructures was observed and confirmed as static quenching. The AuNPs alter neither radiative decay nor nonradiative decay in both nanoclusters. This indicates that the electron/energy transfer within the NP-NCs core-satellite nanoassemblies is absent, in contrast to the results involving other larger NP-NPs core-satellite nanoassemblies. |
URI: | http://hdl.handle.net/11536/22912 http://dx.doi.org/10.1039/c3ra42388c |
ISSN: | 2046-2069 |
DOI: | 10.1039/c3ra42388c |
期刊: | RSC ADVANCES |
Volume: | 3 |
Issue: | 42 |
起始頁: | 19609 |
結束頁: | 19616 |
顯示於類別: | 期刊論文 |