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http://hdl.handle.net/10397/95768
Title: | One-step, DNA-programmed, and flash synthesis of anisotropic noble metal nanostructures on Mxene | Authors: | Song, M Lyu, Y Guo, F Pang, SY Wong, MC Hao, J |
Issue Date: | 10-Nov-2021 | Source: | ACS applied materials and interfaces, 10 Nov. 2021, v. 13, no. 44, p. 52978-52986 | Abstract: | Precise morphological control over anisotropic noble metal nanoparticles (ANPs) is one of the key issues in the nano-research field owing to their unique optoelectronic, magnetic, mechanical, and catalytic properties. Although nanostructures fabricated by the directed assembly of adsorbate have been widely demonstrated recently, facile yet universal synthesis of nanocrystal with tunable morphologies, green templates, no seeds, and high yield remains challenging. Herein, we develop a versatile method, allowing for the rapid, one-step, seedless, surfactant-free synthesis of a noble metal nanostructure with tunable anisotropy on MXene in a sequence-dependent manner through a single-DNA molecular regulator. Based on the mild reducibility of MXene and the selective affinity of the DNA to the specific facets in the crystals, oriented aggregations and the growth of ANPs (Au, Pt, Pd) can be achieved and the resulting asymmetric morphology from polyhedrons, or flowers, or nanoplates to dendrites is observed. The ability to align such ANPs on the MXene surface is expected to lead to improved photothermal effect and surface-enhanced Raman scattering. Furthermore, our work makes the fabrication of the ANPs or ANP-MXene heterostructure easier, stimulating further explorations of physical, chemical, and biological applications. | Keywords: | 2D MXene Anisotropic morphology DNA-programmed Noble metal nanostructures Rapid synthesis |
Publisher: | American Chemical Society | Journal: | ACS applied materials and interfaces | ISSN: | 1944-8244 | EISSN: | 1944-8252 | DOI: | 10.1021/acsami.1c16377 | Rights: | © 2021 American Chemical Society This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://dx.doi.org/10.1021/acsami.1c16377. ACS Applied Materials & Interfaces is available at https://pubs.acs.org/journal/aamick. |
Appears in Collections: | Journal/Magazine Article |
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Song_One-Step_DNA-Programmed_Flash.pdf | Pre-Published version | 1.6 MB | Adobe PDF | View/Open |
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