Preparation of periodic surface structures on doped poly(methyl metacrylate) films by irradiation with KrF excimer laser

Kalachyova, Y.; Lyutakov, Oleksiy; Slepička, Petr; Elashnikov, Roman; Švorčı́k, Václav

doi:10.1186/1556-276x-9-591

Cited by 31 publications

(23 citation statements)

References 49 publications

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“…Preparation of plasmon‐active gold gratings was performed according to a previously reported procedure . A schematic of the surface functionalization of the grating with PNIPAm is shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2017

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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 (1×2 cm2 modified area) and was subsequently covered by thin gold film. In the next step, a 7 nm 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.

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Section: Resultsmentioning

confidence: 99%

“…Preparation of plasmon-activeg old gratings was performed according to apreviously reported procedure. [3,7,24,25] Aschematic of the surface functionalization of the grating with PNIPAm is shown in Figure 1. In the first step, the diazonium chemistry approachw as used for covalent graftingo fC 6 H 4 -COOH to the gold surface.…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2017

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“…The parameters of Ag sputtering were optimized in our previous studies. 7,33 In the next step, the BFDT (biphenyl-4,4 0 -dithiol) molecules were grafted on the grating surface using the common thiol-based chemistry procedure.…”

Section: Resultsmentioning

confidence: 99%

“…The samples were irradiated under various angles 40, 50 and 601 with respect to the film surface normal with 3300, 3500 and 3800 laser pulses respectively with laser fluences from 9 mJ cm À2 . 33 The aperture with an area of 5 Â 10 mm 2 was used. As a result, the periodic surface structures were created on the polymer surface.…”

Section: Preparation Of Ag Gratingmentioning

confidence: 99%

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

Kalachyova

Martin

Jeřábek

et al. 2017

Phys. Chem. Chem. Phys.

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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 ''active'' area 5 Â 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.

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“…Elastic properties of CPs allow preparing of flexible electronic and optoelectronic component and devices. [2][3][4] Among CPs, poly(3,4-ethylenedioxythiophene)-poly (styrenesulfonate) (PEDOT:PSS) has attracted great attention due to its solubility, high electrical conductivity, stability, and optical transparency. PEDOT:PSS is reported to be a very promising candidate for several types of potential CP applications.…”

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confidence: 99%

Tuning of PEDOT:PSS Properties Through Covalent Surface Modification

Guselnikova

Postnikov

Fitl

et al. 2017

J Polym Sci B Polym Phys

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Conductive polymer (poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) is an attractive platform for the design of flexible electronic, optoelectronic, and (bio)sensor devices. Practical application of PEDOT:PSS often requires an incorporation of specific molecules or moieties for tailoring of its physical-chemical properties. In this article, a method for covalent modification of PEDOT:PSS using arenediazonium tosylates was proposed. The procedure includes two steps: chemisorption of diazo-cations on the PEDOT:PSS surface followed by thermal decomposition of the diazonium salt and the covalent bond formation. Structural and surface properties of the samples were evaluated by XPS, SEM-EDX, AFM, goniometry, and a range of electric and optical measurements. The developed modification procedure enables tuning of the PEDOT:PSS surface properties such as conductivity and optical absorption. The possibility to introduce various organic functional groups (from hydrophilic to hydrophobic) and to create new groups for further functionalization makes the developed procedure multipurpose. electronic and optoelectronic PEDOT serves as useful material for construction of flexible devices and is often reported as an essential component for light power conversion devices and thermoelectric power generators. [11][12][13] Due to the broad range of PEDOT:PSS potential applications, its surface properties must be tuned to meet the criteria of a particular area of interest. 14,15 To improve the interaction with noble metals, perovskite, ITO, tissues and cells, the properties such as surface wettability, morphology, adhesion, roughness, conductivity, degradability, biocompatibility, electrical, and optical properties of PEDOT:PSS must be carefully tuned. 16,17 Various physical and chemical methods have been reported for altering of surface properties of PEDOT:PSS at differing levels of success. [18][19][20] Functionalization for a specific application can be performed in several ways-(i) chemisorption of charged molecules via electrostatic interactions, 21,22 (ii) entrapping, or (iii) electrochemical polymerization with Additional Supporting Information may be found in the online version of this article.

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Preparation of periodic surface structures on doped poly(methyl metacrylate) films by irradiation with KrF excimer laser

Cited by 31 publications

References 49 publications

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

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

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

Tuning of PEDOT:PSS Properties Through Covalent Surface Modification

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