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我院近期科研成果被国际学术媒体报道
张桥教授课题组、江林教授课题组与耶路撒冷希伯来大学合作在Particle & Particle Systems Characterization上发表论文
发布时间:2017-11-24 8:57:15 点击:

题目

High-Yield Synthesis of Au@Ag Right Bipyramids and Self-Assembly into Four-Leaf-Clover-like Structures

 

作者

Fei Ji,a Qixuan Zhong,a Jianmei Chen,a Lei Chen,a Huicheng Hu,a Qipeng Liu,a Peipei Yang,a Jiaqi Yu,a Lin Jiang,a* Yong Xu,a Elad Gross,b* and Qiao Zhanga*

 

单位:

aInstitute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices. Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC) Soochow University Suzhou, Jiangsu 215123, P. R. China.

bInstitute of Chemistry and The Center for Nanoscience and Nanocharacterization. The Hebrew University of Jerusalem Jerusalem 9190401, Israel

 

摘要:

Bimetallic core–shell nanostructures are of great interest because of their unique properties. Although bimetallic core–shell nanostructures with plenty of shapes are prepared, synthesis of core–shell nanostructures with asymmetric core and shells is still elusive. This work reports a facile seed-mediated synthesis of Au@Ag right bipyramids with high yield (>95%) and broadly tunable edge length (from ≈130 to ≈230 nm) as well as tunable localized surface plasmon resonance properties. For the first time, a four-leaf-cloverlike tetramer of bipyramids is obtained through self-assembly of the synthesized Au@Ag right bipyramids. The as-assembled structure performs well in surface-enhanced Raman spectroscopy with an analytical enhancement factor up to 1.4 × 107 because of the existence of both sharp tips and “hot-spots.” The present work not only develops a new kind of nanomaterials, but also shows promising applications in optics and sensing.

 

影响因子:

4.474

 

分区情况:

二区

 

链接:

http://onlinelibrary.wiley.com/doi/10.1002/ppsc.201700114/epdf


责任编辑:向丹婷



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