Studies on the interactions between bovine β-lactoglobulin and chitosan at the solid–liquid interface

Campiña, José M.; Souza, Hiléia K.S.; Borges, João; Martins, Ana; Gonçalves, M. P.; Silva, A. Fernando

doi:10.1016/j.electacta.2010.08.012

Cited by 24 publications

(23 citation statements)

References 77 publications

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“…The Layer-by-Layer (LbL) deposition technique [5] has been widely used to construct organized ultrathin films of a variety of materials for numerous applications [6][7][8][9] by spontaneous adsorption of the alternating layers of positively and negatively charged colloids on a charged surface. This technique can be used to modify metallic electrodes in order to introduce new functionalities or to improve specific interactions [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of DNA films using oleylamine modified Au surfaces

Borges

Ribeiro

Pereira

et al. 2011

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of DNA films using oleylamine modified Au surfaces

Borges

Ribeiro

Pereira

et al. 2011

Journal of Colloid and Interface Science

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“…Because of its biocompatibility, mucoadhesiveness, good mechanical properties, biodegradability, and its positive charge, CHI has been used in biomedical applications as a bioadhesive, bactericide agent, gene delivery systems or in pharmaceutical formulations, as a controlled release agent in oral preparations . For this reason, many papers focused on the physicochemical properties of this polymer have been published in the literature, and the study concerning to the interaction between CHI and anionic or cationic lipids has been of great interest because most of the uses of CHI involve the contact with cell membranes …”

Section: Introductionmentioning

confidence: 99%

Interaction of chitosan and self‐assembled distearoylphosphatidic acid molecules at liquid/liquid and air/water interfaces. Effect of temperature

Cámara

Riva

Juárez

et al. 2016

J of Physical Organic Chem

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The effect of the polyelectrolyte, chitosan (CHI), on distearoylphosphatidic acid (DSPA) films was analyzed by cyclic voltammetry, surface pressure‐area isotherm, and Brewster angle microscopy. Distearoylphosphatidic acid films formed at liquid/liquid interface produced a blocking effect to the electrochemical transfer of tetraethylammonium (TEA+) cation from the aqueous to the organic phase, as can be deduced from the cyclic voltammetry experiments. Monolayers of DSPA were performed at different experimental conditions, temperature, subphase solutions (LiCl or CaCl2), and CHI concentration. Both aqueous electrolytes studied exert strong interaction with the negative‐charged polar head groups of phospholipids, which enhance the lateral interactions of the hydrocarbon chains, forming a very structured film. Under these conditions the presence of CHI produces a shift of TEA+ transfer potential toward more positive values because of the less availability of negative sites of the phospholipids for TEA+ adsorption, because they are occupied by the positive‐charged amine groups in CHI chain. Surface pressure‐molecular area isotherms for DSPA monolayers change in the presence of CHI, demonstrating that this polymer produces an expansion of the DSPA film and modifies the surface elasticity of the film. The effect of the temperature was also studied; an exothermic phase transition was observed in the surface pressure‐molecular area isotherms for DSPA‐CHI monolayers, which involves the rupture of interactions between them. Images of Brewster angle microscopy evidence an increase in the optical thickness of the DSPA films in presence of CHI that indicates that the polymer interacts with DSPA molecules at all molecular areas. Copyright © 2016 John Wiley & Sons, Ltd.

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“…LbL assembly is an easy, flexible, and versatile process which can be performed on virtually any kind of substrate of any nature, size, shape, and chemical composition (e.g. planar, porous, colloidal particles, cylindrical structures) using a wide variety of building blocks, such as polymers, metal oxides, carbon nanotubes, graphene nanosheets, dyes, clays, particles, dendrimers, as well as proteins, enzymes, nucleic acids, peptides, or viruses . Therefore, there is absolutely no doubt that the number and variety of materials that can be assembled via LbL technique are only limited by our imagination.…”

Section: Background On the Lbl Assembly Techniquementioning

confidence: 99%

Layer‐by‐Layer Assembly of Light‐Responsive Polymeric Multilayer Systems

Borges

Rodrigues

Reis

et al. 2014

Adv Funct Materials

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115

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wileyonlinelibrary.comcompositions, structures, and functions for several relevant applications. This goal has been achieved by engineering several nanostructured building blocks on surfaces through many processing methods. 'Bottom-up' methods, including Langmuir-Blodgett (LB), [1][2][3] self-assembled monolayers (SAMs), [4][5][6][7][8][9][10][11][12][13] and Layerby-Layer (LbL) assembly, [14][15][16][17][18][19] have been widely used to modify and effectively tailor the surface properties and simultaneously for assembling desired molecules with a high degree of control over organization and orientation. Therefore, these surface engineering strategies have been used to design and fabricate organized monolayer fi lms (in the case of SAM methodology) and multilayer assemblies (in the case of LB and LbL assembly approaches) with precisely layered structures, compositions, properties, and functions, and thus with enhanced performance at the molecular level. Furthermore, the bulk properties of nanostructured materials and the ability to precisely tailor the surface properties and fi nely tune the physicochemical properties and structures of engineered functional molecular assemblies have been recognized as having paramount importance for the scientifi c and engineering communities due to the broad range of possible applications in the biomedical, electronics, optics, catalysis, and energy research fi elds. [20][21][22] It is well known and commonly agreed that nature provides a great source of endless inspirations for designing highly sophisticated functional materials. Hence, scientists and engineers from different areas of chemistry, physics, engineering, biology, medicine, or biotechnology have been challenged to design and engineer environmentally sensitive biomimetic surfaces that would respond to specifi c external stimuli (e.g. temperature, pH, ionic strength, light, mechanical stress, electric, magnetic and ultrasonic fi elds, electric potential, specifi c biological moieties) in a very controllable and predictable manner, hence adjusting to our demands. Such smart surfaces have been developed by modifying surfaces with stimuliresponsive polymeric materials that ideally exhibit reversible switchable physicochemical properties (i.e., a polymer should be switched repeatedly rather than being designed for a single event), precisely tailored structures, compositions, and functions in response to changes in the surrounding environment. Layer-by-Layer (LbL) assembly is a simple and highly versatile method to modify surfaces and fabricate robust and highly-ordered nanostructured coatings over almost any type of substrate. Such versatility enables the incorporation of a plethora of building blocks, including materials exhibiting switchable properties, in a single device through a multitude of complementary intermolecular interactions. Switchable materials may undergo reversible physicochemical changes in response toa variety of external triggers. Although most of the works in the literature have been focusing on stimu...

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Studies on the interactions between bovine β-lactoglobulin and chitosan at the solid–liquid interface

Cited by 24 publications

References 77 publications

Preparation and characterization of DNA films using oleylamine modified Au surfaces

Preparation and characterization of DNA films using oleylamine modified Au surfaces

Interaction of chitosan and self‐assembled distearoylphosphatidic acid molecules at liquid/liquid and air/water interfaces. Effect of temperature

Layer‐by‐Layer Assembly of Light‐Responsive Polymeric Multilayer Systems

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