Silver-nanoparticle-conjugated polypeptide brushes for surface-enhanced raman scattering

Di Yan Wang, Tzu Shen Teng, Yi Chou Wu, Yi Cheng Lee, Kuei Hsien Chen, Chung Hsuan Chen, Ying Chih Chang, Chia Chun Chen

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A soft surface-enhanced Raman scattering (SERS) substrate was fabricated based on a three-dimensional (3D) structure of biocompatible end-tethered poly(L-lysine) ("t-PLL") with a brushlike configuration conjugated with silver nanoparticles (Ag NPs) (Ag NP-t-PLL film). The conjugation procedures were carefully adjusted to generate the films with different interval widths (W) between Ag NPs and diameters (D) of Ag NPs. The resulting film was then characterized by zeta potential, CD spectropolarimeter, and scanning electron microscopy. Furthermore, the studies of SERS enhancements using Ag NP-t-PLL film as a substrate were performed. The significant increases of SERS enhancements have been obtained as W/D was decreased from 0.9 to 0.2. Our results not only afford a facile fabrication of a 3D soft substrate for SERS with high sensitivity and biocompatibility but also offer great potentials for the development of new biosensors.

Original languageEnglish
Pages (from-to)13498-13504
Number of pages7
JournalJournal of Physical Chemistry C
Volume113
Issue number31
DOIs
Publication statusPublished - 2009 Aug 6

Fingerprint

Polypeptides
polypeptides
brushes
Brushes
Silver
Raman scattering
silver
Raman spectra
Nanoparticles
nanoparticles
Peptides
Phase locked loops
Substrates
augmentation
lysine
biocompatibility
polarimeters
Zeta potential
conjugation
Biocompatibility

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

Silver-nanoparticle-conjugated polypeptide brushes for surface-enhanced raman scattering. / Wang, Di Yan; Teng, Tzu Shen; Wu, Yi Chou; Lee, Yi Cheng; Chen, Kuei Hsien; Chen, Chung Hsuan; Chang, Ying Chih; Chen, Chia Chun.

In: Journal of Physical Chemistry C, Vol. 113, No. 31, 06.08.2009, p. 13498-13504.

Research output: Contribution to journalArticle

Wang, DY, Teng, TS, Wu, YC, Lee, YC, Chen, KH, Chen, CH, Chang, YC & Chen, CC 2009, 'Silver-nanoparticle-conjugated polypeptide brushes for surface-enhanced raman scattering', Journal of Physical Chemistry C, vol. 113, no. 31, pp. 13498-13504. https://doi.org/10.1021/jp903664u
Wang, Di Yan ; Teng, Tzu Shen ; Wu, Yi Chou ; Lee, Yi Cheng ; Chen, Kuei Hsien ; Chen, Chung Hsuan ; Chang, Ying Chih ; Chen, Chia Chun. / Silver-nanoparticle-conjugated polypeptide brushes for surface-enhanced raman scattering. In: Journal of Physical Chemistry C. 2009 ; Vol. 113, No. 31. pp. 13498-13504.
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AU - Chen, Chung Hsuan

AU - Chang, Ying Chih

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