Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Use of gold nanoparticle containing poly (allylamine hydrochloride)/ poly (acrylic acid) multilayer films as sers substrates
Download
index.pdf
Date
2015
Author
Kölemen, Birsu
Metadata
Show full item record
Item Usage Stats
268
views
111
downloads
Cite This
Surface-enhanced Raman spectroscopy (SERS) is a surface sensitive vibrational spectroscopy technique that results in the enhancement of Raman scattering by molecules adsorbed on rough metal surfaces. It is a powerful, sensitive and non-destructive technique which is used in chemical, material and life sciences including biosensing, catalysis, spectroelectrochemistry, criminology, single molecule SERS applications and many others. Nanoparticle (NP) embedded multilayer films using Layer by Layer (LbL) technique is one of the types of SERS substrates that have unique properties. Herein, pH-controllable exponentially grown (rougher) and linear grown (smoother) (Poly(allylamine hydrochloride)/Poly(acrylic acid)) polyelectrolyte-NP multilayer film systems were studied for sensing benzenethiol (BT) molecule (up to 10-7M). The effects of number of polyelectrolyte layers and deposition times of gold (Au) NPs on SERS signals were studied and the enhancements in Raman signals are similar for all the studied systems. Characterizations of these surfaces are made by UV-vis Spectrometer, Zeta sizer, Atomic Force Microscope (AFM) and Raman Spectrometer.
Subject Keywords
Gold.
,
Nanoparticles.
,
Polyelectrolytes.
,
Raman spectroscopy.
,
Thin films, Multilayered.
URI
http://etd.lib.metu.edu.tr/upload/12618670/index.pdf
https://hdl.handle.net/11511/24573
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
TiN(IV) oxide coated gold nanoparticles: synthesis, characterization and investigation of surface enhanced raman scattering activities
Elçi, Aylin; Nalbant Esentürk, Emren; Department of Chemistry (2017)
Noble metal nanoparticles (i.e. gold (Au) and silver (Ag)) have received enormous attention due to their superior optical properties related to localized surface plasmon resonance (LSPR) and their potential applications in sensing, imaging, catalysis and optoelectronic devices. In particular, the ones with anisotropic morphologies have attracted intense interest from the researchers because of their superior optoelectronic properties. High electromagnetic field forms on the nanoparticle surface. The intensi...
Observation of Oscillatory Surface Reactions of Riboflavin, Trolox, and Singlet Oxygen Using Single Carbon Nanotube Fluorescence Spectroscopy
Sen, Fatih; Boghossian, Ardemis A.; Sen, Selda; Ulissi, Zachary W.; Zhang, Jingqing; Strano, Michael S. (2012-12-01)
Single-molecule fluorescent microscopy allows semiconducting single-walled carbon nanotubes (SWCNTs) to detect the adsorption and desorption of single adsorbate molecules as a stochastic modulation of emission intensity. In this study, we identify and assign the signature of the complex decomposition and reaction pathways of riboflavin in the presence of the free radical scavenger Trolox using DNA-wrapped SWCNT sensors dispersed onto an aminopropyltriethoxysilane (APTES) coated surface. SWCNT emission is qu...
Properties of Al2O3: nc-Si nanostructures formed by implantation of silicon ions into sapphire and amorphous films of aluminum oxide
Tetelbaum, D. I.; Mikhaylov, A. N.; Belov, A. I.; Ershov, A. V.; Pitirimova, E. A.; Plankina, S. M.; Smirnov, V. N.; Kovalev, A. I.; Turan, Raşit; Yerci, Selçuk; Finstad, T. G.; FOSS, SEAN (2009-02-01)
Photoluminescence, infrared Fourier spectroscopy, Raman scattering, transmission electron microscopy, and electron diffraction were used to study the luminescent, optical, and structural properties of aluminum oxide layers (sapphire and films of Al2O3 deposited on silicon) implanted with Si+ to produce silicon nanocrystals. It is established that, in both cases, a high-temperature annealing of heavily implanted samples brings about the formation of silicon nanocrystals. However, the luminescent properties o...
FABRICATION AND CHARACTERIZATION OF SERS SUBSTRATES VIA LASER INDUCED PHOTOCHEMICAL SURFACE ROUGHENING OF SILICON
Akbıyık, Alp; Bek, Alpan; Department of Physics (2022-6-10)
In this thesis, Surface-Enhanced Raman Spectroscopy (SERS) substrates are fabricated using laser assisted chemical etching of silicon as a surface nanostructuring technique. As a novel method of control over the structuring parameters, the incident laser illumination is spatially modified via a Digital Micromirror Device (DMD) that enable fast and uniform fabrication of complex structures. Onto the photochemically nanostructured silicon surfaces, silver and gold films are deposited by thermal evaporation or...
NUMERICAL ESTIMATION OF ENHANCEMENT FACTOR OF SILVER NANOWIRE FILTER FOILS AS SERS SUBSTRATES
Yüksel, Selen; Bek, Alpan; Taşgın, Mehmet Emre; Department of Micro and Nanotechnology (2023-1-26)
Surface Enhanced Raman Scattering (SERS) is a surface-sensitive vibrational spectroscopy technique. Highly SERS-active substrates made of nanostructured noble metals have been widely investigated owing their activity to the formation of localized surface plasmon resonances, hotspots, where electromagnetic field is amplified by several orders of magnitude locally. Silver and gold are the two most studied noble metals due to their especially low losses and hence high enhancement factors (EF). Gold is chemical...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
B. Kölemen, “Use of gold nanoparticle containing poly (allylamine hydrochloride)/ poly (acrylic acid) multilayer films as sers substrates,” M.S. - Master of Science, Middle East Technical University, 2015.