Sensitive sers platform of bimetallic nanoparticles immobilized on the gold grating surface

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

Surface-enhanced Raman spectroscopy (SERS), stemming from the gigantic light energy focusing near the plasmon-active surface, provides the possibility to reveal the presence of targeted analytes under extremely dilute conditions. At present, SERS sensors have been making significant progress regarding practical applications in the analytical and bioanalytical fields. The main delaying factors in SERS development are related to the poor signal reproducibility. Proposed work is aimed at the achievement of highly-reproducible SERS results. The high sensitivity of SERS has been achieved through the immobilization of sharp-edges bimetallic specific nanoparticles-gold/platinum nanourchins (Au@PtNPs), on the gold grating surface, through the 1,4-benzendithiol (BDT) or 4-sulfobenzenediazonium tosylate (ADT-SH). Gold grating, able to support the surface plasmon polariton (SPP) excitation and propagation, was created on the polymer substrate using the excimer laser modification with further metal deposition. Bimetallic nanoparticles, able to efficiently excite the localized surface plasmons (LSPs), were synthesized using the wet chemical approach. Immobilization of Au@PtNPs on the gold grating allows to achieve SPP-LSP coupling and significantly SERS enhancement, with the maintaining of signal reproducibility, provided by the periodical surface. More detailed experiments show that in the case of ADT-SH, the better Au@PtNPs grafting density and SERS enhancement factor were achieved. Moreover, the produced structure allows SERS measurements with a portable Raman spectrophotometer.

Язык оригиналаАнглийский
Название основной публикацииNANOCON 2018 - Conference Proceedings, 10th Anniversary International Conference on Nanomaterials - Research and Application
ИздательTANGER Ltd.
Страницы426-431
Число страниц6
ISBN (электронное издание)9788087294895
СостояниеОпубликовано - 1 янв 2019
Опубликовано для внешнего пользованияДа
Событие10th Anniversary International Conference on Nanomaterials - Research and Application, NANOCON 2018 - Brno, Чешская Республика
Продолжительность: 17 окт 201819 окт 2018

Серия публикаций

НазваниеNANOCON 2018 - Conference Proceedings, 10th Anniversary International Conference on Nanomaterials - Research and Application

Конференция

Конференция10th Anniversary International Conference on Nanomaterials - Research and Application, NANOCON 2018
СтранаЧешская Республика
ГородBrno
Период17.10.1819.10.18

ASJC Scopus subject areas

  • Biotechnology
  • Electrical and Electronic Engineering
  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials

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  • Цитировать

    Kalachyova, Y., Svorcik, V., & Lyutakov, O. (2019). Sensitive sers platform of bimetallic nanoparticles immobilized on the gold grating surface. В NANOCON 2018 - Conference Proceedings, 10th Anniversary International Conference on Nanomaterials - Research and Application (стр. 426-431). (NANOCON 2018 - Conference Proceedings, 10th Anniversary International Conference on Nanomaterials - Research and Application). TANGER Ltd..