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Facile One-Pot Synthesis of Nanodot-Decorated Gold-Silver Alloy Nanoboxes for Single-Particle Surface-Enhanced Raman Scattering Activity.
ACS Appl Mater Interfaces. 2018 Sep 26; 10(38):32526-32535.AA

Abstract

Surface-enhanced Raman scattering (SERS) is an important, highly sensitive technique for chemical and biological analysis, which is critically dependent upon high-performance metallic substrates. Anisotropic gold (Au)-silver (Ag) alloy nanoboxes are attractive SERS substrates because of the greatly enhanced Raman signals from the strong electromagnetic fields on the sharp corners. Yet, the routine approach of Au-Ag alloy nanobox synthesis is still challenging because of the complicated procedures and use of biologically/environmentally unfriendly reagents. To facilitate the usage of Au-Ag alloy nanoboxes for broad SERS applications, we propose a facile green strategy to synthesize Au-Ag alloy nanoboxes with superior single-particle SERS sensitivity. Our novel straightforward strategy involves HAuCl4 and AgNO3 reduction by ascorbic acid, which is achieved in an aqueous one-pot reaction at ambient temperature. Significantly, the surfaces of the prepared Au-Ag alloy nanoboxes are judiciously designed to introduce nanodots, generating numerous "hot spots" for high Raman signal enhancement as indicated by rigorous numerical simulations. By combining scanning electron microscopy and Raman mapping images, we demonstrate the application of Au-Ag alloy nanoboxes for single-particle sensing SERS activity. The as-prepared Au-Ag alloy nanoboxes are expected to facilitate their further applications in quantitative and ultrasensitive SERS detection.

Authors+Show Affiliations

No affiliation info availableKey Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China.No affiliation info availableAustralian Research Council Centre of Excellence for Nanoscale BioPhotonics, School of Science , RMIT University , Melbourne , Victoria 3001 , Australia.Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, School of Science , RMIT University , Melbourne , Victoria 3001 , Australia.Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China.Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences , Wuhan University , Wuhan 430072 , P. R. China.Department of Molecular Sciences, Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Faculty of Science and Engineering , Macquarie University , Sydney , New South Wales 2109 , Australia.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30168708

Citation

Li, Junrong, et al. "Facile One-Pot Synthesis of Nanodot-Decorated Gold-Silver Alloy Nanoboxes for Single-Particle Surface-Enhanced Raman Scattering Activity." ACS Applied Materials & Interfaces, vol. 10, no. 38, 2018, pp. 32526-32535.
Li J, Zhang G, Wang J, et al. Facile One-Pot Synthesis of Nanodot-Decorated Gold-Silver Alloy Nanoboxes for Single-Particle Surface-Enhanced Raman Scattering Activity. ACS Appl Mater Interfaces. 2018;10(38):32526-32535.
Li, J., Zhang, G., Wang, J., Maksymov, I. S., Greentree, A. D., Hu, J., Shen, A., Wang, Y., & Trau, M. (2018). Facile One-Pot Synthesis of Nanodot-Decorated Gold-Silver Alloy Nanoboxes for Single-Particle Surface-Enhanced Raman Scattering Activity. ACS Applied Materials & Interfaces, 10(38), 32526-32535. https://doi.org/10.1021/acsami.8b10112
Li J, et al. Facile One-Pot Synthesis of Nanodot-Decorated Gold-Silver Alloy Nanoboxes for Single-Particle Surface-Enhanced Raman Scattering Activity. ACS Appl Mater Interfaces. 2018 Sep 26;10(38):32526-32535. PubMed PMID: 30168708.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Facile One-Pot Synthesis of Nanodot-Decorated Gold-Silver Alloy Nanoboxes for Single-Particle Surface-Enhanced Raman Scattering Activity. AU - Li,Junrong, AU - Zhang,Guannan, AU - Wang,Jing, AU - Maksymov,Ivan S, AU - Greentree,Andrew D, AU - Hu,Jiming, AU - Shen,Aiguo, AU - Wang,Yuling, AU - Trau,Matt, Y1 - 2018/09/17/ PY - 2018/9/1/pubmed PY - 2018/9/1/medline PY - 2018/9/1/entrez KW - aqueous phase synthesis KW - gold−silver alloy nanoboxes KW - nanodot KW - one-pot synthesis KW - single-particle KW - surface-enhanced Raman scattering (SERS) SP - 32526 EP - 32535 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 10 IS - 38 N2 - Surface-enhanced Raman scattering (SERS) is an important, highly sensitive technique for chemical and biological analysis, which is critically dependent upon high-performance metallic substrates. Anisotropic gold (Au)-silver (Ag) alloy nanoboxes are attractive SERS substrates because of the greatly enhanced Raman signals from the strong electromagnetic fields on the sharp corners. Yet, the routine approach of Au-Ag alloy nanobox synthesis is still challenging because of the complicated procedures and use of biologically/environmentally unfriendly reagents. To facilitate the usage of Au-Ag alloy nanoboxes for broad SERS applications, we propose a facile green strategy to synthesize Au-Ag alloy nanoboxes with superior single-particle SERS sensitivity. Our novel straightforward strategy involves HAuCl4 and AgNO3 reduction by ascorbic acid, which is achieved in an aqueous one-pot reaction at ambient temperature. Significantly, the surfaces of the prepared Au-Ag alloy nanoboxes are judiciously designed to introduce nanodots, generating numerous "hot spots" for high Raman signal enhancement as indicated by rigorous numerical simulations. By combining scanning electron microscopy and Raman mapping images, we demonstrate the application of Au-Ag alloy nanoboxes for single-particle sensing SERS activity. The as-prepared Au-Ag alloy nanoboxes are expected to facilitate their further applications in quantitative and ultrasensitive SERS detection. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/30168708/Facile_One_Pot_Synthesis_of_Nanodot_Decorated_Gold_Silver_Alloy_Nanoboxes_for_Single_Particle_Surface_Enhanced_Raman_Scattering_Activity_ L2 - https://doi.org/10.1021/acsami.8b10112 DB - PRIME DP - Unbound Medicine ER -
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