Supramolecular thin films via the Langmuir-Blodgett-Kuhn (LBK) technique

Rigoberto Advincula, Wolfgang Knoll

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Supramolecular organic thin films can be made by combining the Langmuir- Kuhn (LBK) technique and a host of self-assembly processes. Studies have been made on the formation of 'passive-active' AB, Y-type multilayers with a class of polyelectrolytes called ionenes and ionic NLO active amphiphiles. These films were investigated using several ultrathin film sensitive techniques to determine multilayer structure and ordering. Foremost of these techniques is surface plasmon spectroscopy (SPS), which is highly sensitive to thickness and refractive index changes of an adsorbed dielectric film. Unique layered architectures were only possible via deposition using an alternate three- compartment dipping trough. Two main factors were determined necessary for film integrity; electrostatic interaction in the hydrophilic layers and stability of the hydrophobic barrier layer. Combined with polymer self- assembly solution adsorption, film architectures from AXB to AXYZB types were realized. At the same time, the uniqueness of the approach allowed the preparation of systems suitable for in situ polymer solution adsorption investigations.

Original languageEnglish
Pages (from-to)443-455
Number of pages13
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume123-124
DOIs
Publication statusPublished - 1997 May 15
Externally publishedYes

Fingerprint

Thin films
Self assembly
Multilayers
thin films
Adsorption
Amphiphiles
Dielectric films
Ultrathin films
Polymer solutions
self assembly
Coulomb interactions
Polyelectrolytes
Refractive index
Polymers
adsorption
Spectroscopy
polymers
compartments
barrier layers
uniqueness

Keywords

  • Alternating layers
  • LBK films
  • Lonenes
  • NLO chromophores
  • Polymer self- assembly
  • Surface plasmon spectroscopy
  • X-ray reflection and diffraction

ASJC Scopus subject areas

  • Colloid and Surface Chemistry

Cite this

Supramolecular thin films via the Langmuir-Blodgett-Kuhn (LBK) technique. / Advincula, Rigoberto; Knoll, Wolfgang.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 123-124, 15.05.1997, p. 443-455.

Research output: Contribution to journalArticle

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