Bimetallic Core–Shell Nanoparticles of Gold and Silver via Bioinspired Polydopamine Layer as Surface-Enhanced Raman Spectroscopy (SERS) Platform
Despite numerous attempts to fabricate the core–shell nanoparticles, novel, simple, and low-cost approaches are still required to produce these efficient nanosystems. In this study, we propose the synthesis of bimetallic core–shell nanoparticles of gold (AuNP) and silver (AgNP) nanostructures via a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/10/4/688 |
| _version_ | 1797571404894306304 |
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| author | Asli Yilmaz Mehmet Yilmaz |
| author_facet | Asli Yilmaz Mehmet Yilmaz |
| author_sort | Asli Yilmaz |
| collection | DOAJ |
| description | Despite numerous attempts to fabricate the core–shell nanoparticles, novel, simple, and low-cost approaches are still required to produce these efficient nanosystems. In this study, we propose the synthesis of bimetallic core–shell nanoparticles of gold (AuNP) and silver (AgNP) nanostructures via a bioinspired polydopamine (PDOP) layer and their employment as a surface-enhanced Raman spectroscopy (SERS) platform. Herein, the PDOP layer was used as an interface between nanostructures as well as stabilizing and reducing agents for the deposition of silver ions onto the AuNPs. UV-vis absorption spectra and electron microscope images confirmed the deposition of the silver ions and the formation of core–shell nanoparticles. SERS activity tests indicated that both the PDOP thickness and silver deposition time are the dominant parameters that determine the SERS performances of the proposed core–shell system. In comparison to bare AuNPs, more than three times higher SERS signal intensity was obtained with an enhancement factor of 3.5 × 10<sup>5</sup>. |
| first_indexed | 2024-03-10T20:38:51Z |
| format | Article |
| id | doaj.art-77db5a78560a440ab76869a567c3a0cf |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T20:38:51Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-77db5a78560a440ab76869a567c3a0cf2023-11-19T20:47:41ZengMDPI AGNanomaterials2079-49912020-04-0110468810.3390/nano10040688Bimetallic Core–Shell Nanoparticles of Gold and Silver via Bioinspired Polydopamine Layer as Surface-Enhanced Raman Spectroscopy (SERS) PlatformAsli Yilmaz0Mehmet Yilmaz1Department of Molecular Biology and Genetics, Ataturk University, Erzurum 25240, TurkeyEast Anatolia High Technology Application and Research Center (DAYTAM), Ataturk University, Erzurum 25240, TurkeyDespite numerous attempts to fabricate the core–shell nanoparticles, novel, simple, and low-cost approaches are still required to produce these efficient nanosystems. In this study, we propose the synthesis of bimetallic core–shell nanoparticles of gold (AuNP) and silver (AgNP) nanostructures via a bioinspired polydopamine (PDOP) layer and their employment as a surface-enhanced Raman spectroscopy (SERS) platform. Herein, the PDOP layer was used as an interface between nanostructures as well as stabilizing and reducing agents for the deposition of silver ions onto the AuNPs. UV-vis absorption spectra and electron microscope images confirmed the deposition of the silver ions and the formation of core–shell nanoparticles. SERS activity tests indicated that both the PDOP thickness and silver deposition time are the dominant parameters that determine the SERS performances of the proposed core–shell system. In comparison to bare AuNPs, more than three times higher SERS signal intensity was obtained with an enhancement factor of 3.5 × 10<sup>5</sup>.https://www.mdpi.com/2079-4991/10/4/688bimetallic core–shell nanoparticlesgold nanoparticlespolydopaminesurface-enhanced Raman spectroscopy (SERS) |
| spellingShingle | Asli Yilmaz Mehmet Yilmaz Bimetallic Core–Shell Nanoparticles of Gold and Silver via Bioinspired Polydopamine Layer as Surface-Enhanced Raman Spectroscopy (SERS) Platform Nanomaterials bimetallic core–shell nanoparticles gold nanoparticles polydopamine surface-enhanced Raman spectroscopy (SERS) |
| title | Bimetallic Core–Shell Nanoparticles of Gold and Silver via Bioinspired Polydopamine Layer as Surface-Enhanced Raman Spectroscopy (SERS) Platform |
| title_full | Bimetallic Core–Shell Nanoparticles of Gold and Silver via Bioinspired Polydopamine Layer as Surface-Enhanced Raman Spectroscopy (SERS) Platform |
| title_fullStr | Bimetallic Core–Shell Nanoparticles of Gold and Silver via Bioinspired Polydopamine Layer as Surface-Enhanced Raman Spectroscopy (SERS) Platform |
| title_full_unstemmed | Bimetallic Core–Shell Nanoparticles of Gold and Silver via Bioinspired Polydopamine Layer as Surface-Enhanced Raman Spectroscopy (SERS) Platform |
| title_short | Bimetallic Core–Shell Nanoparticles of Gold and Silver via Bioinspired Polydopamine Layer as Surface-Enhanced Raman Spectroscopy (SERS) Platform |
| title_sort | bimetallic core shell nanoparticles of gold and silver via bioinspired polydopamine layer as surface enhanced raman spectroscopy sers platform |
| topic | bimetallic core–shell nanoparticles gold nanoparticles polydopamine surface-enhanced Raman spectroscopy (SERS) |
| url | https://www.mdpi.com/2079-4991/10/4/688 |
| work_keys_str_mv | AT asliyilmaz bimetalliccoreshellnanoparticlesofgoldandsilverviabioinspiredpolydopaminelayerassurfaceenhancedramanspectroscopysersplatform AT mehmetyilmaz bimetalliccoreshellnanoparticlesofgoldandsilverviabioinspiredpolydopaminelayerassurfaceenhancedramanspectroscopysersplatform |