Journal
NANO LETTERS
Volume 21, Issue 19, Pages 8205-8212Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.1c02649
Keywords
gold nanobipyramids; metal-organic frameworks; plasmon resonance; surface-enhanced Raman scattering; zeolitic imidazolate framework-8
Categories
Funding
- National Natural Science Foundation of China (NSAF) [U1930402]
- Research Grants Council of Hong Kong (NSFC/RGC) [N_CUHK408/18]
- Pearl River Talent Recruitment Program [2019QN01C216]
- Croucher Foundation (Croucher Senior Research Fellowships 2020)
Ask authors/readers for more resources
In this study, a facile wet-chemistry approach was used for the selective deposition of zeolitic imidazolate framework-8 (ZIF-8) on anisotropic Au nanobipyramids (NBPs) and nanorods. ZIF-8 was selectively deposited at the ends and waist and around the entire surface of the elongated Au nanocrystals. The NBP-based nanostructures with end-deposited ZIF-8 exhibited the best surface-enhanced Raman scattering (SERS) performance, showing potential for molecular sensing, optical switching, and plasmonic catalysis.
Site-selective deposition of metal-organic frameworks (MOFs) on metal nanocrystals has remained challenging because of the difficult control of the nucleation and growth of MOFs. Herein we report on a facile wet-chemistry approach for the selective deposition of zeolitic imidazolate framework-8 (ZIF-8) on anisotropic Au nanobipyramids (NBPs) and nanorods. ZIF-8 is selectively deposited at the ends and waist and around the entire surface of the elongated Au nanocrystals. The NBP-based nanostructures with end-deposited ZIF-8 exhibit the best surface-enhanced Raman scattering (SERS) performance, implying that molecules can be concentrated by ZIF-8 at the hot spots. In addition, the SERS signal exhibits good selectivity for small molecules because of the molecular sieving effect of ZIF-8. This study opens up a promising route for constructing plasmonic nanostructures with site selectively deposited ZIF-8, which hold enormous potential for molecular sensing, optical switching, and plasmonic catalysis.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available