Surface modification of Au and Ag plasmonic thin films via diazonium chemistry: Evaluation of structure and properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13440%2F17%3A43892924" target="_blank" >RIV/44555601:13440/17:43892924 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/17:10363369 RIV/60461373:22310/17:43914213

Výsledek na webu

<a href="https://ac.els-cdn.com/S0927775716310834/1-s2.0-S0927775716310834-main.pdf?_tid=d2e48468-a9c8-11e7-862d-00000aab0f6c&acdnat=1507206745_e67c2272d21c710dc64e6c01f92c1ced" target="_blank" >https://ac.els-cdn.com/S0927775716310834/1-s2.0-S0927775716310834-main.pdf?_tid=d2e48468-a9c8-11e7-862d-00000aab0f6c&acdnat=1507206745_e67c2272d21c710dc64e6c01f92c1ced</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.colsurfa.2016.12.040" target="_blank" >10.1016/j.colsurfa.2016.12.040</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Surface modification of Au and Ag plasmonic thin films via diazonium chemistry: Evaluation of structure and properties

Popis výsledku v původním jazyce

Plasmon-active noble metals nanostructures based on Ag and Au thin films become widely applied in the field of plasmonics and related sensing technologies. For improvement of the metal interaction with different media, metals surface can be functionalized in order to increase/decrease hydrophilicity, lipophilicity or introduce/change the surface charge. In this paper, the surface functionalization of plasmon-active Au and Ag films using arenediazonium tosylates was described. The surface functionalization was performed in the aqueous medium by the spontaneous and electrically induced mechanisms. Functionalized surfaces were characterized by the Raman and UV-vis spectroscopies, AFM nanomechanical mapping, SEM (EDX), XPS, CVA, zeta- potential, and water contact angle measurement techniques. It was founded that the key difference between reactivity of gold and silver films is distributional behavior of grafted organic functional groups: silver has higher tendency to form clustered, island-like structure while gold is covered more homogeneously. Spontaneous modification forms approximately monomolecular thick films of organic compounds and can be used in the field of SPR or SERS sensors. Electrochemically induced activation produces thick polyphenylene layer on the metal surface and can find application in the field of tunable plasmonic devices or plasmon-based lasers. (C) 2016 Elsevier B.V. All rights reserved.

Název v anglickém jazyce

Surface modification of Au and Ag plasmonic thin films via diazonium chemistry: Evaluation of structure and properties

Popis výsledku anglicky

Plasmon-active noble metals nanostructures based on Ag and Au thin films become widely applied in the field of plasmonics and related sensing technologies. For improvement of the metal interaction with different media, metals surface can be functionalized in order to increase/decrease hydrophilicity, lipophilicity or introduce/change the surface charge. In this paper, the surface functionalization of plasmon-active Au and Ag films using arenediazonium tosylates was described. The surface functionalization was performed in the aqueous medium by the spontaneous and electrically induced mechanisms. Functionalized surfaces were characterized by the Raman and UV-vis spectroscopies, AFM nanomechanical mapping, SEM (EDX), XPS, CVA, zeta- potential, and water contact angle measurement techniques. It was founded that the key difference between reactivity of gold and silver films is distributional behavior of grafted organic functional groups: silver has higher tendency to form clustered, island-like structure while gold is covered more homogeneously. Spontaneous modification forms approximately monomolecular thick films of organic compounds and can be used in the field of SPR or SERS sensors. Electrochemically induced activation produces thick polyphenylene layer on the metal surface and can find application in the field of tunable plasmonic devices or plasmon-based lasers. (C) 2016 Elsevier B.V. All rights reserved.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Colloids and Surfaces A-Physicochemical and Engineering Aspects

ISSN

0927-7757

e-ISSN

—

Svazek periodika

516

Číslo periodika v rámci svazku

516

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

274-285

Kód UT WoS článku

000393727700030

EID výsledku v databázi Scopus

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