Weak polyelectrolyte-based multilayers via layer-by-layer assembly: Approaches, properties, and applications

Yuan, Weiyong; Weng, Guoming; Lipton, Jason; Li, Chang Ming; Tassel, Paul R. Van; Taylor, André D.

doi:10.1016/j.cis.2020.102200

Cited by 88 publications

(59 citation statements)

References 149 publications

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“…The choice of relevant anionic compounds affects the final properties of the flat chitosan-based structures and their applications. Recently, LBL technology has been successfully used to produce proton conducting electrolytes for fuel cells [46,47]. However, in most of the cases the substrate used is made of expensive Nafion ® and, thus novel studies exploring the possibility to use low-cost chitosan have been proposed [48].…”

Section: Flat Chitosan Structures: Methods Of Synthesismentioning

confidence: 99%

Ionotropic Gelation of Chitosan Flat Structures and Potential Applications

et al. 2021

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The capability of some polymers, such as chitosan, to form low cost gels under mild conditions is of great application interest. Ionotropic gelation of chitosan has been used predominantly for the preparation of gel beads for biomedical application. Only in the last few years has the use of this method been extended to the fabrication of chitosan-based flat structures. Herein, after an initial analysis of the major applications of chitosan flat membranes and films and their usual methods of synthesis, the process of ionotropic gelation of chitosan and some recently proposed novel procedures for the synthesis of flat structures are presented.

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Section: Flat Chitosan Structures: Methods Of Synthesismentioning

confidence: 99%

Ionotropic Gelation of Chitosan Flat Structures and Potential Applications

et al. 2021

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“…Furthermore, it appears as inconsistent for accounting the assembly of polyelectrolyte multilayers where a transition from linear to non-linear growth occurs as result of a modification of the assembly conditions, e.g., (PDADMAC-PSS) n , [89,102,122]. This may be accounted for the picture proposed by Yuan et al [123]. They proposed that the emergence of non-linear growth may be associated with a loose ionic cross-linking, and the existence of a preferential interaction of the polycation with the polyanion deposited in the film may favor the interdiffusion of the polycation chains, and consequently the emergence of non-linear growth.…”

Section: Number Of Bilayers Nmentioning

confidence: 99%

Polyelectrolyte Multilayers on Soft Colloidal Nanosurfaces: A New Life for the Layer-By-Layer Method

et al. 2021

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The Layer-by-Layer (LbL) method is a well-established method for the assembly of nanomaterials with controlled structure and functionality through the alternate deposition onto a template of two mutual interacting molecules, e.g., polyelectrolytes bearing opposite charge. The current development of this methodology has allowed the fabrication of a broad range of systems by assembling different types of molecules onto substrates with different chemical nature, size, or shape, resulting in numerous applications for LbL systems. In particular, the use of soft colloidal nanosurfaces, including nanogels, vesicles, liposomes, micelles, and emulsion droplets as a template for the assembly of LbL materials has undergone a significant growth in recent years due to their potential impact on the design of platforms for the encapsulation and controlled release of active molecules. This review proposes an analysis of some of the current trends on the fabrication of LbL materials using soft colloidal nanosurfaces, including liposomes, emulsion droplets, or even cells, as templates. Furthermore, some fundamental aspects related to deposition methodologies commonly used for fabricating LbL materials on colloidal templates together with the most fundamental physicochemical aspects involved in the assembly of LbL materials will also be discussed.

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“…The conventional LbL method based on the dipping strategy was first reported by Iler et al (1966) and improved by Decher et al (1991). Since then, it has attracted enormous interest, especially in the last two decades [ 152 ]. Other approaches are reported to create PEMs on solid substrates, including spin-coating, spraying, and combined spin–spraying methods [ 149 ].…”

Section: Processing Polysaccharide-based Materials For Biomedical Applicationsmentioning

confidence: 99%

Polysaccharide-Based Materials Created by Physical Processes: From Preparation to Biomedical Applications

et al. 2021

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Polysaccharide-based materials created by physical processes have received considerable attention for biomedical applications. These structures are often made by associating charged polyelectrolytes in aqueous solutions, avoiding toxic chemistries (crosslinking agents). We review the principal polysaccharides (glycosaminoglycans, marine polysaccharides, and derivatives) containing ionizable groups in their structures and cellulose (neutral polysaccharide). Physical materials with high stability in aqueous media can be developed depending on the selected strategy. We review strategies, including coacervation, ionotropic gelation, electrospinning, layer-by-layer coating, gelation of polymer blends, solvent evaporation, and freezing–thawing methods, that create polysaccharide-based assemblies via in situ (one-step) methods for biomedical applications. We focus on materials used for growth factor (GFs) delivery, scaffolds, antimicrobial coatings, and wound dressings.

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Weak polyelectrolyte-based multilayers via layer-by-layer assembly: Approaches, properties, and applications

Cited by 88 publications

References 149 publications

Ionotropic Gelation of Chitosan Flat Structures and Potential Applications

Ionotropic Gelation of Chitosan Flat Structures and Potential Applications

Polyelectrolyte Multilayers on Soft Colloidal Nanosurfaces: A New Life for the Layer-By-Layer Method

Polysaccharide-Based Materials Created by Physical Processes: From Preparation to Biomedical Applications

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