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Facile preparation of nanoparticle based SERS substrates for trace molecule detection.
Phys Chem Chem Phys. 2020 Sep 30; 22(37):21139-21146.PC

Abstract

In this work, we demonstrate that a polished Si wafer surface can be converted to possess strong surface-enhanced Raman scattering (SERS) activity by spray coating of polyol synthesized colloidal silver nanoparticles (AgNPs) at as low as 1% surface coverage. The SERS activity assays of substrate surfaces prepared with different production procedures (spray and spin coating) at different surface coverages are realized using population statistics. The resulting Raman enhancement factors (EFs) are discussed with the help of distance-dependent electromagnetic simulations for single particles and dimers. Statistics on the SERS effect and the corresponding EF calculations show that polyol synthesized AgNPs exhibit extremely strong SERS activity with EFs up to 108 at as low as 1% surface coverage. We discuss in this work that this is possible due to the distinct properties of polyol synthesized AgNPs such as atomically flat surfaces, sharp edges and corners naturally occurring in this synthesis method, which favor strong plasmonic activity. The method can be generalized to convert virtually any surface into a SERS substrate.

Authors+Show Affiliations

Micro and Nanotechnology Program, Middle East Technical University, Ankara 06800, Turkey. ozge.demirtas@metu.edu.tr.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32926013

Citation

Demirtaş, Özge, et al. "Facile Preparation of Nanoparticle Based SERS Substrates for Trace Molecule Detection." Physical Chemistry Chemical Physics : PCCP, vol. 22, no. 37, 2020, pp. 21139-21146.
Demirtaş Ö, Doğanay D, Öztürk İM, et al. Facile preparation of nanoparticle based SERS substrates for trace molecule detection. Phys Chem Chem Phys. 2020;22(37):21139-21146.
Demirtaş, Ö., Doğanay, D., Öztürk, İ. M., Ünalan, H. E., & Bek, A. (2020). Facile preparation of nanoparticle based SERS substrates for trace molecule detection. Physical Chemistry Chemical Physics : PCCP, 22(37), 21139-21146. https://doi.org/10.1039/d0cp01866j
Demirtaş Ö, et al. Facile Preparation of Nanoparticle Based SERS Substrates for Trace Molecule Detection. Phys Chem Chem Phys. 2020 Sep 30;22(37):21139-21146. PubMed PMID: 32926013.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Facile preparation of nanoparticle based SERS substrates for trace molecule detection. AU - Demirtaş,Özge, AU - Doğanay,Doğa, AU - Öztürk,İbrahim Murat, AU - Ünalan,Hüsnü Emrah, AU - Bek,Alpan, PY - 2020/9/15/pubmed PY - 2020/9/15/medline PY - 2020/9/14/entrez SP - 21139 EP - 21146 JF - Physical chemistry chemical physics : PCCP JO - Phys Chem Chem Phys VL - 22 IS - 37 N2 - In this work, we demonstrate that a polished Si wafer surface can be converted to possess strong surface-enhanced Raman scattering (SERS) activity by spray coating of polyol synthesized colloidal silver nanoparticles (AgNPs) at as low as 1% surface coverage. The SERS activity assays of substrate surfaces prepared with different production procedures (spray and spin coating) at different surface coverages are realized using population statistics. The resulting Raman enhancement factors (EFs) are discussed with the help of distance-dependent electromagnetic simulations for single particles and dimers. Statistics on the SERS effect and the corresponding EF calculations show that polyol synthesized AgNPs exhibit extremely strong SERS activity with EFs up to 108 at as low as 1% surface coverage. We discuss in this work that this is possible due to the distinct properties of polyol synthesized AgNPs such as atomically flat surfaces, sharp edges and corners naturally occurring in this synthesis method, which favor strong plasmonic activity. The method can be generalized to convert virtually any surface into a SERS substrate. SN - 1463-9084 UR - https://www.unboundmedicine.com/medline/citation/32926013/Facile_preparation_of_nanoparticle_based_SERS_substrates_for_trace_molecule_detection. L2 - https://doi.org/10.1039/d0cp01866j DB - PRIME DP - Unbound Medicine ER -
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