Polyelectrolyte Multilayer Films of Different Charge Density Copolymers with Synergistic Nonelectrostatic Interactions Prepared by the Layer-by-Layer Technique

Langmuir ◽  
2004 ◽  
Vol 20 (7) ◽  
pp. 2730-2738 ◽  
Author(s):  
Bjoern Schoeler ◽  
Sonja Sharpe ◽  
T. Alan Hatton ◽  
Frank Caruso
Keyword(s):  
Charge Density ◽  
Multilayer Films ◽  
Layer By Layer ◽  
Polyelectrolyte Multilayer ◽  
Layer Technique ◽  
Layer By Layer Technique

scholarly journals Evaluations of polyelectrolyte multilayer membranes assembled by a dynamic layer-by-layer technique

Desalination ◽  
2008 ◽  
Vol 234 (1-3) ◽  
pp. 300-306 ◽  
Author(s):  
Shulan Ji ◽  
Guojun Zhang ◽  
Zhongzhou Liu ◽  
Yuelian Peng ◽  
Zhan Wang
Keyword(s):  
Layer By Layer ◽  
Polyelectrolyte Multilayer ◽  
Layer Technique ◽  
Multilayer Membranes ◽  
Layer By Layer Technique ◽  
Dynamic Layer

Polyelectrolyte Multilayer Film Coating and Stability at the Surfaces of Oral Prosthesis Base Polymers: an in vitro and in vivo Study

2006 ◽  
Vol 85 (1) ◽  
pp. 44-48 ◽  
Author(s):  
O. Etienne ◽  
C. Picart ◽  
C. Taddei ◽  
P. Keller ◽  
E. Hubsch ◽  
...  
Keyword(s):  
Multilayer Film ◽  
Film Coating ◽  
Human Saliva ◽  
Layer By Layer ◽  
Polyelectrolyte Multilayer ◽  
Layer Technique ◽  
Polyelectrolyte Multilayer Film ◽  
Layer By Layer Technique

A new type of coating involving a layer-by-layer technique has been recently reported. This coating is composed of a polyelectrolyte multilayer film that confers specific properties on surfaces to which it is applied. Here, we studied the applicability of such a technique to the coating of oral prostheses, by first testing the construction of polyelectrolyte multilayer films on several polymers used in oral prosthesis bases, and, subsequently, by studying the stability of these coatings in vitro, in human saliva, and in vivo in a rat model. We demonstrated that the multilayered films are able to coat the surfaces of all tested polymers completely, thus increasing their wettability. We also showed that saliva does not degrade the film after 7 days in vitro and after 4 days in vivo. Taken together, our results establish that the layer-by-layer technique is suitable for the coating of oral devices.

Fabrication of a-Si:H/nc-Si multilayer films using layer by layer technique and their properties

2002 ◽  
Vol 299-302 ◽  
pp. 1070-1074 ◽  
Author(s):  
V.P Afanasjev ◽  
A.S Gudovskikh ◽  
J.P Kleider ◽  
K.V Koughia ◽  
A.P Sazanov ◽  
...  
Keyword(s):  
Multilayer Films ◽  
Layer By Layer ◽  
Layer Technique ◽  
Layer By Layer Technique

scholarly journals Interactions of Casein and Polypeptides in Multilayer Films Studied by FTIR and Molecular Dynamics

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 920 ◽  
Author(s):  
Lilianna Szyk-Warszyńska ◽  
Katarzyna Raszka ◽  
Piotr Warszyński
Keyword(s):  
Molecular Dynamics ◽  
Conformational Changes ◽  
Grazing Angle ◽  
Multilayer Films ◽  
Attenuated Total Reflection ◽  
Layer By Layer ◽  
Preferential Formation ◽  
Layer Technique ◽  
Dynamics Simulations ◽  
Layer By Layer Technique

Multilayer films containing α- and β-casein and polypeptides, poly-L-lysine (PLL), and poly-L-arginine (PLArg) were formed by the layer-by-layer technique and Fourier Transform InfraRed spectroscopy with Attenuated Total Reflection (FTIR-ATR) and FTIR/Grazing Angle analyzed their infrared spectra. We investigated the changes of conformations of casein and polypeptides in the complexes formed during the build-up of the films. To elucidate the differences in the mechanism of complex formation leading to various growths of (PLL/casein)n and (PLArg/casein)n films, we performed the molecular dynamics simulations of the systems consisting of short PLL and PLArg chains and the representative peptide chains—casein fragments, which consists of several aminoacid sequences. The results of the simulation indicated the preferential formation of hydrogen bonds of poly-L-arginine with phosphoserine and glutamic acid residues of caseins. FTIR spectra confirmed those, which revealed greater conformational changes during the formation of casein complex with poly-L-arginine than with poly-L-lysine resulting from stronger interactions, which was also reflected in the bigger growth of (PLArg/casein)n films with the number of deposited layers.

scholarly journals Cellular Internalization of Beta-Carotene Loaded Polyelectrolyte Multilayer Capsules by Raman Mapping

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1477 ◽  
Author(s):  
Loredana F. Leopold ◽  
Oana Marișca ◽  
Ioana Oprea ◽  
Dumitrița Rugină ◽  
Maria Suciu ◽  
...  
Keyword(s):  
Beta Carotene ◽  
Bioactive Molecules ◽  
Cellular Internalization ◽  
Layer By Layer ◽  
Raman Mapping ◽  
Polyelectrolyte Multilayer ◽  
Layer Technique ◽  
Cellular Components ◽  
Layer By Layer Technique

Raman mapping is becoming a very useful tool in investigating cells and cellular components, as well as bioactive molecules intracellularly. In this study, we have encapsulated beta-carotene using a layer-by-layer technique, as a way to enhance its stability and bioavailability. Further, we have used Raman mapping to characterize the as-obtained capsules and monitor their uptake by the human retinal epithelial D407 cells. We were able to successfully map the beta-carotene distribution inside the capsules, to localize the capsules intracellularly, and distinguish between capsules and other cellular components.

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