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Large-Scale, Ultrasensitive, Highly Reproducible and Reusable Smart SERS Platform Based on PNIPAm-Grafted Gold Grating

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13440%2F17%3A43892928" target="_blank" >RIV/44555601:13440/17:43892928 - isvavai.cz</a>

  • Alternative codes found

    RIV/00216208:11310/17:10367549 RIV/60461373:22310/17:43914150

  • Result on the web

    <a href="http://dx.doi.org/10.1002/cnma.201600284" target="_blank" >http://dx.doi.org/10.1002/cnma.201600284</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1002/cnma.201600284" target="_blank" >10.1002/cnma.201600284</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Large-Scale, Ultrasensitive, Highly Reproducible and Reusable Smart SERS Platform Based on PNIPAm-Grafted Gold Grating

  • Original language description

    A smart plasmonic sensor based on periodic gold gratings grafted with poly(N-isopropyl acrylamide) (PNIPAm) has been designed and realized. A periodic gold structure was created on the polymer backing with an excimer laser (1x2cm(2) modified area) and was subsequently covered by thin gold film. In the next step, a 7nm thick PNIPAm layer was grafted to the gold surface through a two-step procedure: covalent attachment of 4-carboxybenzil groups followed by carboxyl groups activation and their coupling with amino-terminated PNIPAm. Surface properties of the prepared structure and their switchable behavior were investigated using refractometry, wettability measurements, AFM in water, cyclic voltammetry, and pH- and temperature-dependent Z-potential measurements. The structure enables effective entrapment and SERS detection of azo dyes, significant reduction of minimal detectable concentration of target molecules, and a detection limit down to femtomolar concentrations. Excitation of plasmons on the well-ordered surface structure also gives excellent reproducibility for SERS along the particular sample surface and as well as on different samples. Additionally, the reversible switching of wettability under repeated temperature changes on the gold plasmonic platform allows multiple uses of the developed system.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2017

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    ChemNanoMat

  • ISSN

    2199-692X

  • e-ISSN

  • Volume of the periodical

    3

  • Issue of the periodical within the volume

    2

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    10

  • Pages from-to

    135-144

  • UT code for WoS article

    000394911300008

  • EID of the result in the Scopus database