期刊
ACS NANO
卷 13, 期 4, 页码 4424-4435出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.8b09658
关键词
gold nanorods; CTAB; n-decanol; symmetry breaking; seeded growth
类别
资金
- Spanish MINECO [FIS2017-89361-C3-2-P, MAT2017-86659-R]
- Madrid Regional Government [P2018/NMT-4389]
- Complutense University of Madrid [PR75/18-21616]
- European Commission [EUSMI 731019]
- FPI Fellowship from the Spanish MINECO
- Research Foundation Flanders (FWO)
One of the major difficulties hindering the widespread application of colloidal anisotropic plasmonic nanoparticles is the limited robustness and reproducibility of multistep synthetic methods. We demonstrate herein that the reproducibility and reliability of colloidal gold nanorod (AuNR) synthesis can be greatly improved by disconnecting the symmetry-breaking event from the seeded growth process. We have used a modified silver-assisted seeded growth method in the presence of the surfactant hexadecyltrimethylammonium bromide and n-decanol as a co-surfactant to prepare small AuNRs in high yield, which were then used as seeds for the growth of high quality AuNR colloids. Whereas the use of n-decanol provides a more-rigid micellar system, the growth on anisotropic seeds avoids sources of irreproducibility during the symmetry breaking step, yielding uniform AuNR colloids with narrow plasmon bands, ranging from 600 to 1270 nm, and allowing the fine-tuning of the final dimensions. This method provides a robust route for the preparation of high quality AuNR colloids with tunable morphology, size, and optical response in a reproducible and scalable manner.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据