<i>In Situ</i> Investigations of Polymer Self-Assembly Solution Adsorption by Surface Plasmon Spectroscopy

Advincula, Rigoberto C.; Aust, E.; Meyer, Wolfgang; Knoll, Wolfgang

doi:10.1021/la9601622

Cited by 99 publications

(71 citation statements)

References 26 publications

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“…Of course, if one of the partners is a standard strong polyelectrolyte, the second polyion should have a high charge density, too, to favor film growth by ESA. Obviously, the charge matching criterion does not apply too strictly so that polyelectrolytes with an intermediate charge density such as poly(styrene sulfonate) (6), or polymeric dye 25 26,27,102,134,135,[138][139][140][141][142][143][144][145] (cf. Fig.…”

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.

1,175

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.

1,175

1,184

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“…Polymer self-assembly has been investigated by ellipsometry [188], x-ray reflectometry [176], near-field scanning optical microscopy [189], atomic force microscopy [190] and other techniques [190][191][192]. Some of them can be applied as in situ characterization methods to analyze the kinetics of adsorption [188,[190][191][192].…”

Section: Characterization Of Polymer Self-assembly By Ellipsometrymentioning

confidence: 99%

“…Some of them can be applied as in situ characterization methods to analyze the kinetics of adsorption [188,[190][191][192]. Among those techniques, ellipsometry is a versatile optical technique that has applications in many different fields.…”

Section: Characterization Of Polymer Self-assembly By Ellipsometrymentioning

confidence: 99%

Miniature fiber-optic multicavity Fabry–Perot interferometric biosensor

et al. 2005

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(ABSTRACT)Fiber-optic Fabry-Perot interferometric (FFPI) sensors have been widely used due to their high sensitivity, ease of fabrication, miniature size, and capability for multiplexing. However, direct measurement of self-assembled thin films, receptor immobilization process or biological reaction is limited in the FFPI technique due to the difficulty of forming Fabry-Perot cavities by the thin film itself. Novel methods are needed to provide an accurate and reliable measurement for monitoring the thin-film growth in the nanometer range and under various conditions. In this work, two types of fiber-optic multicavity Fabry-Perot interferometric (MFPI) sensors with built-in temperature compensation were designed and fabricated for thin-film measurement, with applications in chemical and biological sensing. Both the tubing-based MFPI sensor and microgap MFPI sensor provide simple, yet high performance solutions for thin-film sensing. The temperature dependence of the sensing cavity is compensated by extracting the temperature information from a second multiplexed cavity. This provides the opportunity to examine the thin-film characteristics under different environment temperatures.To demonstrate the potential of this structure for practical applications, immunosensors were fabricated and tested using these structures. Self-assembled polyelectrolytes served as a precursor film for immobilization of antibodies to ensure they retain their biological activity. This not only provides a convenient method for protein immobilization but also presents the possibility of increasing the binding capacity

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“…The angle shift is, of course, dependent on molecular concentration as well as the type of the molecules. The physical models usually used for the description of this shift are based mainly on the concept of an additional layer on the surface of SPR-converter, which is characterized by the effective thickness h and refractive index N, analogous to the similar idea of ellipsometry of thin films [1][2][3][4]. Another approach is based on the idea of ultra-thin film representation [5].…”

Section: Introductionmentioning

confidence: 99%

3D-quantification of biomolecular covers using surface plasmon-polariton resonance experiment

Chegel¹,

Chegel²,

Guiver³

et al. 2008

Sensors and Actuators B: Chemical

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3-D quantification of biomolecular covers using surface plasmonpolariton resonance experiment Chegel, V.; Chegel, Yu.; Guiver, Michael; Lopatynskyi, A.; Lopatynska, O.; Lozovski, V. Sensors and Actuators B 134 (2008) The concentration of surface molecules N s and components of molecular susceptibility jl (ω) can both be determined from surface plasmon-polariton resonance (SPPR) experiments, instead of effective layer thickness and index of refraction, which are usually determined. The theoretical consideration of a molecular layer as monolayer of separated 3D-oscillators provides a new perspective for investigating molecules during SPPR experiment. It is shown that SPPR response and the form of the reflective curve depend on the form of a biomolecule and its orientation relative to the surface of the metal-carrier of plasmon oscillations. The experimental data for immunological reaction for the calculation of surface molecular concentration and mass of biomolecular covering are presented.

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In Situ Investigations of Polymer Self-Assembly Solution Adsorption by Surface Plasmon Spectroscopy

Cited by 99 publications

References 26 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

Miniature fiber-optic multicavity Fabry–Perot interferometric biosensor

3D-quantification of biomolecular covers using surface plasmon-polariton resonance experiment

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