Propeller-Like Nanorod-Upconversion Nanoparticle Assemblies with Intense Chiroptical Activity and Luminescence Enhancement in Aqueous Phase
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- 作者：Xiaoling Wu ; Liguang Xu ; Wei Ma ; Liqiang Liu ; Hua Kuang ; Nicholas A. Kotov and Chuanlai Xu
- 刊名：Advanced Materials
- 出版年：2016
- 出版时间：July 27, 2016
- 年：2016
- 卷：28
- 期：28
- 页码：5907-5915
- 全文大小：2607K
- ISSN：1521-4095
文摘
Propeller-like nanoscale assemblies with exceptionally intense chiroptical activity and strong luminescence are prepared using gold nanorods and upconversion nanoparticles. The circular dichroism intensity of the tetramer reached 80.9 mdeg, with g-factor value of 2.1 × 10–2. The enhancement factor of upconversion luminescence is as high as 21.3 in aqueous phase. Attomolar bioanalysis of a cancer biomarker with two model is also achieved, showing potential for early disease diagnosis and environmental monitoring.