Ultrasensitive and reproducible SERS platform of coupled Ag grating with multibranched Au nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43914149" target="_blank" >RIV/60461373:22310/17:43914149 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22330/17:43914149 RIV/60461373:22810/17:43914149 RIV/68407700:21230/17:00312363

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c7cp01828b" target="_blank" >http://dx.doi.org/10.1039/c7cp01828b</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c7cp01828b" target="_blank" >10.1039/c7cp01828b</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ultrasensitive and reproducible SERS platform of coupled Ag grating with multibranched Au nanoparticles

Popis výsledku v původním jazyce

Surface-enhanced Raman scattering (SERS) spectroscopy is an extremely sensitive analytical technique that is capable of identifying the vibration signatures of target molecules up to single-molecule sensitivity. In this work, the ultrahigh sensitivity of SERS has been achieved through the immobilization of sharp-edges specific nanoparticles - so-called gold multibranched NPs (AuMs) on the silver grating surface through the biphenyl dithiol. This approach allows combining the extremely high SERS enhancement factor (better than that in the case of AuMs immobilized on the flat Ag film) with perfect reproducibility of Raman signals. The grating was created on the polymer substrate using the excimer laser modification and further metal deposition and has an &quot;active&apos;&apos; area 5 x 10 mm(2), enabling the macroscale SERS substrate preparation. The wet-chemistry synthesized AuMs were then immobilized on the grating surface and the produced structure allows SERS measurements with a portable Raman spectrophotometer. The prepared structures were checked using the AFM, UV-Vis, and Raman spectroscopy techniques.

Název v anglickém jazyce

Ultrasensitive and reproducible SERS platform of coupled Ag grating with multibranched Au nanoparticles

Popis výsledku anglicky

Surface-enhanced Raman scattering (SERS) spectroscopy is an extremely sensitive analytical technique that is capable of identifying the vibration signatures of target molecules up to single-molecule sensitivity. In this work, the ultrahigh sensitivity of SERS has been achieved through the immobilization of sharp-edges specific nanoparticles - so-called gold multibranched NPs (AuMs) on the silver grating surface through the biphenyl dithiol. This approach allows combining the extremely high SERS enhancement factor (better than that in the case of AuMs immobilized on the flat Ag film) with perfect reproducibility of Raman signals. The grating was created on the polymer substrate using the excimer laser modification and further metal deposition and has an &quot;active&apos;&apos; area 5 x 10 mm(2), enabling the macroscale SERS substrate preparation. The wet-chemistry synthesized AuMs were then immobilized on the grating surface and the produced structure allows SERS measurements with a portable Raman spectrophotometer. The prepared structures were checked using the AFM, UV-Vis, and Raman spectroscopy techniques.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

—

Svazek periodika

19

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

14761-14769

Kód UT WoS článku

000403327200058

EID výsledku v databázi Scopus

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