Layer-by-layer self-assembly preparation of layered double hydroxide/ polyelectrolyte nanofilms monitored by surface plasmon resonance spectroscopy

M. Szekeres, A. Széchenyi, K. Stépán, T. Haraszti, I. Dékány

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Layer-by-layer self-assembly was used to prepare nanofilms of (2:1) MgAl-layered double hydroxide (LDH) nanoparticles and polyacrylic acid or sodium polystyrene sulfonate. The multilayers were attached to ∼50-nm thick gold films on microscopy glass slides prepared by vacuum evaporation. The contact between the gold film and the multilayered films was mediated via surface modification with thiols, adsorption of poly(diallyl dimethyl ammonium) chloride (PDDA) or direct binding of the LDH particles. Surface plasmon resonance (SPR) spectra of the multilayered films were analyzed by fitting the Fresnel equations. The shifts in the SPR angle (ΔΘSPR) due to the adsorption/deposition on the gold surface were used to evaluate the process of building up the multilayers. Strong surface/multilayer contact formed when electrostatic attraction and hydrophobic interaction were combined as in the case of mercaptopropanoic acid or PDDA sticking layers. The LDH suspension concentration strongly influenced the number of deposited layers. The multilayer films were investigated by reflection FT-IR spectroscopy.

Original languageEnglish
Pages (from-to)937-945
Number of pages9
JournalColloid & Polymer Science
Volume283
Issue number9
DOIs
Publication statusPublished - Jun 2005

Fingerprint

Surface plasmon resonance
Polyelectrolytes
surface plasmon resonance
Self assembly
hydroxides
self assembly
Spectroscopy
Gold
preparation
Multilayers
carbopol 940
spectroscopy
gold
Adsorption
Ammonium Chloride
Vacuum evaporation
Acids
Multilayer films
ammonium chlorides
Sulfhydryl Compounds

Keywords

  • Layer-by-layer self-assembly
  • Layered double hydroxide
  • Nanofilms
  • Polyelectrolytes
  • Surface plasmon resonance spectroscopy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry
  • Colloid and Surface Chemistry

Cite this

Layer-by-layer self-assembly preparation of layered double hydroxide/ polyelectrolyte nanofilms monitored by surface plasmon resonance spectroscopy. / Szekeres, M.; Széchenyi, A.; Stépán, K.; Haraszti, T.; Dékány, I.

In: Colloid & Polymer Science, Vol. 283, No. 9, 06.2005, p. 937-945.

Research output: Contribution to journalArticle

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