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

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

Bibliographic Details
Parent link:Physical Chemistry Chemical Physics.— , 1999-
Vol. 19, iss. 22.— 2017.— [P. 14761-14769]
Corporate Author: Национальный исследовательский Томский политехнический университет (ТПУ) Институт природных ресурсов (ИПР) Кафедра технологии органических веществ и полимерных материалов (ТОВПМ)
Other Authors: Kalachyova E. Evgeniya, Mares D. David, Jerabek V. Vitezslav, Ulbrich P. Pavel, Lapcak L. Ladislav, Svorcik V. Vaclav, Lyutakov O. Oleksy
Summary:Title screen
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 ? 10 mm2, 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.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2017
Subjects:
электронный ресурс
труды учёных ТПУ
комбинационное рассеяние
спектроскопия
наночастицы
Online Access:http://dx.doi.org/10.1039/C7CP01828B
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656820

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