Langmuir-Blodgett multilayer technique

Aviram and Ratner did not speeify how such a device could be interrogated electrically. There are two choices. The Langmuir-Blodgett (LB) technique allows for the assembly of one-molecule-thick ( monolayer ) films or of several-molecule-thick films (multilayers) the assembly onto surfaces by physisorption has the advantage that the transfer of amphiphilic molecules from the... 

Langmuir-Blodgett (LB) technique was used to construct thin films, because this technique allows precise control not only of film thickness but also of molecular orientation and arrangement in the film. The LB technique is a powerful tool to prepare monolayers of amphilic molecules on aqueous subphases and highly-ordered multilayers by superimposing monolayers on solid substrates. 

In Langmuir-Blodgett-multilayers the photoproducts can be determined more easily. While compounds 109-111 could not be deposited by the LB-technique presumably due to the short lengths of the hydrophobic tails, compound 112 could easily be transferred onto various hydrophobic substrates The polymerization in multilayers was followed by UV- and IR-spectroscopy. During exposure to UV-... 

By its very nature, copolymerization offers the unique capability or opportunity for chemists to design and construct molecules with special electronic properties using established techniques. The Langmuir-Blodgett (LB) technique, for instance, enables the chemist to organize molecules into highly ordered monolayers and to manipulate a multilayer film to a desired architecture. Copolymerization enables the molecular architect or tailor to incorporate various molecules, e.g. biological components, into electroactive PP and PT polymers. The number of potential applications for these unique materials is unlimited. 

Here, we describe the construction and evaluation of a conductimetric pH sensor, based on a multilayer polypyrrole film [8]. The sensor is an interdigitated electrode array coated with the polymer by using the Langmuir-Blodgett (LB) technique [9]. Impedance spectroscopy has been used to investigate the complex admittance of the device when exposed to aqueous solutions of different pH. 

The Langmuir-Blodgett (LB) technique is one of the most conventional methods of nano-film fabrication. The polyion complex technique [221] was proposed to immobilize water-soluble bilayer forming amphiphiles and counter-charged polymers as polymeric LB films. Water-insoluble polyion complexes are formed at the air/water interface when the charged amphiphiles are directly spread on the surface of the aqueous polyelectrol 4 e solution. Alternative multilayers of the polymer and the amphiphile with stoichiometric ion pairing can be deposited onto solid substrates by the conventional LB technique [222]. The principle of the... 

The application of composites to naval needs is the motif for research on joining techniques, hydrothermal effects and other damage and failure mechanisms, response to transient shock loading, and impact and underwater shock response. The research on ferroelectric liquid crystals includes their behavior as Langmuir-Blodgett multilayers. 

Mono- and Multilayers of Spherical Polymer Particles Prepared by Langmuir-Blodgett and Self-Assembly Techniques... 

FIG. 7.1 Deposition of multilayers using the Langmuir-Blodgett technique (a and b) monolayer deposition and (c and d) multilayer deposition. 

The Langmuir-Blodgett technique for deposition of ordered multilayers has origins which, in a sense, go back to classical antiquity as the present author has discussed elsewhere [3], In 1774 Benjamin Franklin [4] demonstrated that a very small quantity of oil could influence the sur-... 

Monolayers can be transferred onto solid substrates by the Langmuir-Blodgett technique giving rise to mono- or multilayers which can even have thicknesses in the range of the wavelength of visible light. The multilayer quality often depends on the quality of the first monolayer transfer. 

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