芘单元功能化的硅纳米晶体：具有明亮近红外发射的高效光捕获天线。
Silicon Nanocrystals Functionalized with Pyrene Units: Efficient Light-Harvesting Antennae with Bright Near-Infrared Emission.
作者信息
Locritani Mirko, Yu Yixuan, Bergamini Giacomo, Baroncini Massimo, Molloy Jennifer K, Korgel Brian A, Ceroni Paola
机构信息
†Department of Chemistry "G. Ciamician", University of Bologna, Via Selmi 2, 40126 Bologna, Italy.
‡Department of Chemical Engineering, Texas Materials Institute, Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712, United States.
出版信息
J Phys Chem Lett. 2014 Oct 2;5(19):3325-9. doi: 10.1021/jz501609e. Epub 2014 Sep 15.
Pyrene chromophores were attached to silicon nanocrystals (SiNCs) with diameters of 2.6 and 5.0 nm to provide light-harvesting antennae for enhanced optical absorption. Efficient energy transfer from the pyrene moieties to the SiNCs was observed to induce bright visible (2.6 nm) or near-infrared (NIR) (5.0 nm) photoluminescence (PL). The 5.0 nm diameter pyrene-derivatized SiNCs exhibited NIR PL emission that was insensitive to dioxygen, with a 40% quantum yield and long lifetime (hundreds of μs).
将芘发色团连接到直径为2.6纳米和5.0纳米的硅纳米晶体（SiNCs）上，以提供用于增强光吸收的光捕获天线。观察到芘部分向SiNCs的有效能量转移，从而诱导出明亮的可见光（2.6纳米）或近红外（NIR）（5.0纳米）光致发光（PL）。直径为5.0纳米的芘衍生化SiNCs表现出对双氧不敏感的近红外PL发射，量子产率为40%，寿命长（数百微秒）。
Zotero 插件