Molecular Weight Dependence of Alternate Adsorption through Charge-Transfer Interaction

Shimazaki, Yuzuru; Nakamura, Ryo; Ito, Shinzaburo; Yamamoto, Masahide

doi:10.1021/la001230u

Cited by 63 publications

(53 citation statements)

References 34 publications

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“…Popular strategies to modify the functionality of a surface include plasma polymerization, [3] layer-by-layer (LBL) deposition of polymers [4,5] (driven by electrostatic interactions, [6] charge transfer interactions [7] or hydrogen bonding [8] ) and the recently introduced deposition of "poly-dopamine" [9] (which is actually dopamine-melanin [10] ) by oxidation of dopamine with dissolved oxygen.…”

Section: Introductionmentioning

confidence: 99%

Melanin‐Containing Films: Growth from Dopamine Solutions versus Layer‐by‐Layer Deposition

et al. 2010

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Films formed by oxidation of dopamine are of interest for functionalisation of solid-liquid interfaces owing to their versatility. However, the ability to modulate the properties of such films, for example, permeability to ionic species and the absorption coefficient, is urgently needed. Indeed, melanin films produced by oxidation of dopamine absorb strongly over the whole UV/Vis part of the electromagnetic spectrum and are impermeable to anions even for a film thickness as low as a few nanometers. Herein we combine oxidation of dopamine to produce a solution containing dopamine-melanin particles and their alternating deposition with poly(diallyldimethylammonium chloride) to produce films which have nearly the same morphology as pure dopamine-melanin films but are less compact, more transparent and more permeable to ferrocyanide anions.

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Section: Introductionmentioning

confidence: 99%

Melanin‐Containing Films: Growth from Dopamine Solutions versus Layer‐by‐Layer Deposition

et al. 2010

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“…This minimum charge density depends on the salt concentration and the salt type; this was investigated [39] by the authors previously and also it was shown that to rely very strongly on the chemical identity of the charged units involved in forming the thin film [40]. Stronger ion pairing will also yield more stable multilayers [2] and moreover, high molecular weight polymers promote the stability of the layers [41][42][43]. High and low pH solutions can potentially discharge the ions and destroy the layers, while heat treatment causes a chemical reaction between the molecules of two adjacent layers and makes the bonds stronger and creates a more stable multilayer film, as can be seen in the first three experiments discussed (shown in Figure 2, Figure 3 and Figure 4).…”

Section: Resultsmentioning

confidence: 99%

Optical sensor for pH monitoring using a layer-by-layer deposition technique emphasizing enhanced stability and re-usability

Raoufi

Surre

Rajarajan

et al. 2014

Sensors and Actuators B: Chemical

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“…Driving forces for LbL assembly are not limited to electrostatic interactions alone. Various interactions including metal-ligand interaction [149][150][151][152], hydrogen-bonding [153][154][155], charge transfer [156][157][158], supramolecular inclusion [159], bio-specific recognition [160][161][162], and stereo-complex formation [163,164] can be used for LbL assembly. Wide freedom in assembling techniques is also guaranteed.…”

Section: Lbl As Bio-friendly Methods For Nanofabricationmentioning

confidence: 99%

Enzyme-Encapsulated Layer-by-Layer Assemblies: Current Status and Challenges Toward Ultimate Nanodevices

Ariga

Hill

2010

Advances in Polymer Science

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Alternate layer-by-layer (LbL) adsorption has received much attention as an emerging methodology. Biocompatibility is the most prominent advantage of the LbL assembly process because the technique employs mild conditions for film construction. Most enzymes, especially water-soluble ones, have charged sites at their surfaces so that electrostatic LbL adsorption is suitable for construction of various protein organizations. In this review chapter, we summarize recent developments on enzyme-encapsulated LbL devices and their related functions where "encapsulated" does not always entail entrapment within spherical structures but generally includes immobilization of enzymes within the LbL structures. Recent examples, with various functions such as reactor sensors and medical applications, are described within a classification of structural types, i.e., thin films and spherical capsules. In addition to conventional applications, advanced systems including integration of LbL structures into advanced devices such as microchannels, field effect transistors, and flow injection amperometric sensors are introduced as well as recent developments in hybridization of LbL assemblies with functional nanomaterials such as carbon nanotube, dendrimers, nanoparticles, lipid assemblies, and mesoporous materials, all of which can enhance bio-related functions of LbL assemblies.

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Molecular Weight Dependence of Alternate Adsorption through Charge-Transfer Interaction

Cited by 63 publications

References 34 publications

Melanin‐Containing Films: Growth from Dopamine Solutions versus Layer‐by‐Layer Deposition

Melanin‐Containing Films: Growth from Dopamine Solutions versus Layer‐by‐Layer Deposition

Optical sensor for pH monitoring using a layer-by-layer deposition technique emphasizing enhanced stability and re-usability

Enzyme-Encapsulated Layer-by-Layer Assemblies: Current Status and Challenges Toward Ultimate Nanodevices

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