Self-Assembly of high density of triangular silver nanoplate films promoted by 3-aminopropyltrimethoxysilan

Norhayati Abu Bakar, Joe George Shapter, Muhamad Mat Salleh, Ali Umar Akrajas

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In this work, we studied the structure of synthesized triangular silver nanoplates in solution and the growth of the nanoplates on a silicon surface using 3-aminopropyltrimethoxysilane (APTMS) as a coupling agent. The triangular-shaped colloidal silver nanoplates were simply synthesized by a direct chemical reduction approach. We studied the three characteristic peaks of the unique optical absorbance of triangular silver nanoplates and subsequently measured an average edge length of 26 ± 1 nm. The nanoplate thickness was determined to be 7 ± 2 nm from transmission electron microscopy images. Depositing the nanoplates on a silicon surface was carried out to determine the coverage of triangular nanoplates obtained when adhesion was promoted by a coupling agent. The APTMS film assisted the attachment of the nanoplates to the silicon surface and the coverage of the nanoplates increased with increasing deposition time. The triangular silver nanoplate thin film was a monolayer and a high coverage (near complete) was obtained after eight hours of exposure to the nanoplate solution. The silver film formed was shown to be a good surface-enhanced Raman scattering (SERS) substrate as it gave an enormous Raman enhancement for bisphenol A (BPA).

Original languageEnglish
Pages (from-to)209-221
Number of pages13
JournalApplied Sciences (Switzerland)
Volume5
Issue number3
DOIs
Publication statusPublished - 2015

Fingerprint

Silver
Self assembly
self assembly
Silicon
silver
Coupling agents
silicon
bisphenols
Raman scattering
Monolayers
Adhesion
attachment
Transmission electron microscopy
adhesion
Thin films
Raman spectra
Substrates
transmission electron microscopy
augmentation
thin films

Keywords

  • 3-aminopropyltrimethoxysilane (APTMS)
  • High density surface
  • Self assembly
  • Triangular silver nanoplate thin film

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Process Chemistry and Technology
  • Computer Science Applications
  • Engineering(all)
  • Materials Science(all)
  • Instrumentation

Cite this

Self-Assembly of high density of triangular silver nanoplate films promoted by 3-aminopropyltrimethoxysilan. / Bakar, Norhayati Abu; Shapter, Joe George; Mat Salleh, Muhamad; Akrajas, Ali Umar.

In: Applied Sciences (Switzerland), Vol. 5, No. 3, 2015, p. 209-221.

Research output: Contribution to journalArticle

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