A new plasmonic device made of gold nanoparticles and temperature responsive polymer brush on a silicon substrate

Zengin A., TAMER U., ÇAYKARA T.

JOURNAL OF COLLOID AND INTERFACE SCIENCE, cilt.448, ss.215-221, 2015 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 448
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.jcis.2015.02.027
  • Dergi Adı: JOURNAL OF COLLOID AND INTERFACE SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.215-221
  • Anahtar Kelimeler: Temperature-responsive polymer brushes, Phase transition temperature, Gold nanoparticle, Plasmonic device, Surface-enhanced Raman spectroscopy, ENHANCED RAMAN-SCATTERING, NANOSENSORS, SPECTROSCOPY, SURFACES
  • Gazi Üniversitesi Adresli: Evet

Özet

This paper reports a general stepwise route assembling interface-mediated RAFT polymerization of 2methoxyethoxy ethyl methacrylate and conversion of dodecyl trithiocarbonate end groups to thiol groups for gold nanoparticle assemblies. We intended by this way a new plasmonic device made of gold nanoparticles (Au NPs) and temperature responsive [poly((2-methoxyethoxy)ethyl) methacrylatei [Poly(MEO2-MA)] brush on a silicon substrate. This polymeric layer replies to temperature changing by conformational variation and is therefore able to change the distance between the Au NPs on the brush layer with 5,5-dithiobis(2-dinitrobenzoic acid) (DTNB). We show that an increment of the external temperature reversibly stimulates a significant increase of the DTNB SERS signal. (C) 2015 Published by Elsevier Inc.