Fabrication of a covalently attached multilayer via photolysis of layer-by-layer self-assembled films containing diazo-resins

Wu, Tao; Sun, Yipeng; Wang, Zhiqiang; Shen, Xi Zhang* Jiacong; Sun, Junliang; Cao, Weixiao

doi:10.1039/a804623i

Cited by 163 publications

(118 citation statements)

References 4 publications

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“…8) and comprises conducting and light-emitting polymers 89,112, , other non-conjugated redox-active polymers 49,62,131,132,[200][201][202][203][204][205][206][207] , polymeric complexes such as the Cu 2+ complex of poly(ethyleneimine) 80) , Ru 2+ complex of 2,29-bipyridyl containing polymers 170-172, 200, 208) , or an Os 2+ complex of poly(vinylpyridine) 196,[209][210][211] , reactive polymers 35,87,148,[212][213][214][215][216] , polymers bearing non-linear optically active dyes 35,138,148,214,[217][218][219][220][221][222][223][224][225][226] , liquid crystalline polyelectrolytes 105,[135][136][137] , and dendrimers [227]…”

Section: Polymers Suited For Esamentioning

confidence: 99%

Ultrathin polymer coatings by complexation of polyelectrolytes at interfaces: suitable materials, structure and properties

Bertrand

Jonas

Laschewsky³

et al. 2000

Macromol. Rapid Commun.

1,168

1,184

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A bit of historyThe key role of surfaces for many material properties as well as for many biological processes has been recognized now. Therefore, new strategies aim at the tailoring of the material's surface only -or of a thin surface layer, respectively -, while preserving the bulk properties of the underlying support. Particular emphasis has been given to the surface modification by polymers, in an attempt to extend the known versatility of polymer bulk materials to ultrathin films and coatings, and to prepare bulk-surface composite materials. The self-organization of polymers has been increasingly explored for the preparation of well-defined surfaces and interfaces in recent years, extending the use of the established methods of low molar mass compounds (for comparative reviews, see ref. 1-3)). With such techniques, polymer films are formed spontaneously on substrates, due to balanced interactions between substrate, polymer (or its precursor) and medium. Typically, very thin, often monomolecular layers are produced. Repetitive deposition steps provide a precise control over the total thickness of the coatings, in the range from a few angstroms up to the micrometer range. Moreover, the step-by-step procedures allow for a fine structuring in the third dimension. In addition to the preparation of uniform and homogeneous coatings, gratings, gradients or steps of defined height in molecular dimensions can be easily constructed.The most recent of the self-organization techniques is the alternating physisorption of oppositely charged polyelectrolytes, the so-called "layer-by-layer" method or "electrostatic self-assembly" (ESA) [3][4][5][6][7][8][9][10] . Although some early, singular studies of self-assembly by alternating adsorption of oppositely charged polyions are reported [11][12][13] , a practical method for ESA was developed Feature Article: The article presents the state-of-the-art of alternating physisorption of oppositely charged polyelectrolytes, the so-called "layer-by-layer" method or "electrostatic self-assembly" (ESA), for the preparation of thin polymer coatings. In comparison to other, more established self-organization techniques, this recent method is distinguished by its simplicity, versatility, and speed. In particular, the tendency for self-healing is unique. Emphasis is given to the role of the molecular structure of the polyelectrolytes, and to the nature of the support. Also, various parameters for the preparation of multilayer films are highlighted, which are very important due to the kinetic control of the build-up process. The structure of the resulting coatings, their quality and stability, chemical reactions in the films, and potential applications are discussed.Macromol. Rapid Commun. 21, No. 7

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Section: Polymers Suited For Esamentioning

confidence: 99%

Ultrathin polymer coatings by complexation of polyelectrolytes at interfaces: suitable materials, structure and properties

Bertrand

Jonas

Laschewsky³

et al. 2000

Macromol. Rapid Commun.

1,168

1,184

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“…A first method consists in cross-linking the films after their buildup, as first introduced in 1995 by Decher et al [41] In 1998, the group Sun et al constructed a highly stable covalently attached multilayer obtained by UV irradiation of ionic self-assembled multilayer films of diazo-resins and poly(styrene sulfonate). [42] In 1999, Harris et al [43] showed that cross-linking of polyelectrolyte films containing amine and carboxylic groups can be achieved by simple heating resulting in the formation of amide functions. In 1996, Brynda and Houska used a cross-linking agent, glutaraldehyde, to cross-link human serum albumin/heparine multilayers.…”

Section: Reviewmentioning

confidence: 98%

Spray‐Assisted Polyelectrolyte Multilayer Buildup: from Step‐by‐Step to Single‐Step Polyelectrolyte Film Constructions

et al. 2012

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The alternate deposition of polyanions and polycations on a solid substrate leads to the formation of nanometer to micrometer films called Polyelectrolyte Multilayers. This step-by-step construction of organic films constitutes a method of choice to functionalize surfaces with applications ranging from optical to bioactive coatings. The method was originally developed by dipping the substrate in the different polyelectrolyte solutions. Recent advances show that spraying the polyelectrolyte solutions onto the substrate represents an appealing alternative to dipping because it is much faster and easier to adapt at an industrial level. Multilayer deposition by spraying is thus greatly gaining in interest. Here we review the current literature on this deposition method. After a brief history of polyelectrolyte multilayers to place the spraying method in its context, we review the fundamental issues that have been addresses so far. We then give an overview the different fields where the method has been applied.

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“…The noncovalently attached films are not robust enough and can be etched by solvents, which limits application of this type of film in an extended range. A way we designed to solve this problem is to combine the simplicity of the layer-by-layer assembly technique with post photoinduced reaction in the restricted area [21]. We first selected the diazonium group containing polycation of diazoresins (note DAR) (Scheme 1E) and sulfonate containing polyanion of poly(4-styrene sulfonate) (PSS) as building blocks.…”

Section: In Situ Photoreaction To Fabricate Covalently Attached Multimentioning

confidence: 99%

Polymeric nanostructured composite films

Shen

Sun

Zhang

2000

Pure and Applied Chemistry

Self Cite

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This research news describes the construction of polymeric nanostructured composite film based on a variety of interactions, such as hydrophobic-hydrophilic effect, electrostatic interaction, hydrogen bonding, etc. The work focused on developing strategies to solve the basic problems in the area of ultrathin film research, such as stability, improving the interface quality, creating patterned interface, and techniques to construct nanolayered structure. With in-depth study of the relationship between the microscopic layered architecture and macroscopic function of supramolecular assemblies, it is anticipated that one could obtain miniature devices or machines of high efficiency through integration of the assembling process and device fabrication.

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Fabrication of a covalently attached multilayer via photolysis of layer-by-layer self-assembled films containing diazo-resins

Abstract: Construction of highly stable covalently attached multilayer films was achieved by UV irradiation of ionic self-assembled multilayer films of diazo-resins and poly(sodium styrene sulfonate).

Cited by 163 publications

References 4 publications

Ultrathin polymer coatings by complexation of polyelectrolytes at interfaces: suitable materials, structure and properties

Ultrathin polymer coatings by complexation of polyelectrolytes at interfaces: suitable materials, structure and properties

Spray‐Assisted Polyelectrolyte Multilayer Buildup: from Step‐by‐Step to Single‐Step Polyelectrolyte Film Constructions

Polymeric nanostructured composite films

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