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
—