Electrochemical properties of covalently bonded silane amphiphile monolayers on a tin dioxide electrode

Okahata, Yoshio; Yokobori, Masatoshi; Ebara, Yasuhito; Ebato, Hiroshi; Ariga, Katsuhiko

doi:10.1021/la00096a022

Cited by 24 publications

(21 citation statements)

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“…1). Studies of the first two materials, silica‐supported Langmuir monolayers20–25 and silica‐supported vesicles,26–30 were performed while the author held positions in the Okahata group of the Tokyo Institute of Technology and the Kikuchi group of the Nara Institute of Science and Technology, respectively. The last research target, biomimetic mesoporous silica,31, 32 is under study as part of ERATO Nanospace project, which is under direction of Prof. Aida.…”

Section: Introductionmentioning

confidence: 99%

Silica‐supported biomimetic membranes

Ariga

2004

The Chemical Record

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The hybridization of lipid membranes with inorganic silica-based framework results in mechanically stable biomembrane mimics. This account describes three types of silica-based biomimetic membranes. As the first example, a Langmuir monolayer of dialkylalkoxysilane was polymerized and immobilized onto a porous glass plate. Permeability through the monolayer-immobilized glass was regulated by phase transition of the immobilized monolayer. In the second example, spherical vesicles covalently attached to a silica cover layer (Cerasome) were prepared. The Cerasome was stable enough to be assembled into layer-by-layer films without destruction of its vesicular structure. This material could be an example of the multicellular assembly. Mesoporous silica films densely filling peptide assemblies (Proteosilica) are introduced as the third example. The Proteosilica was synthesized as a transparent film through template sol-gel reaction using amphiphilic peptides.

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Section: Introductionmentioning

confidence: 99%

Silica‐supported biomimetic membranes

Ariga

2004

The Chemical Record

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“…Permeation control through monolayer structures was also demonstrated by using electrochemical methods (Fig. 8(B)), 150 where permeability of an electrochemically active probe (Fe(CN) 4− 6 /Fe(CN) 3− 6 ) through the monolayer was monitored. Maximum permeability to the probe molecule near the phase transition temperature was probably due to alkyl chain disorder during a period of unstable coexistence of crystalline and liquid crystalline states of the monolayer phase.…”

Section: Langmuir Films Of Organic/inorganic Hybrids and Inorganic Sumentioning

confidence: 97%

Langmuir Films of Unusual Components

Acharaya¹,

Shundo²,

Hill³

et al. 2009

J. Nanosci. Nanotech.

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This short review aims to break traditional images of Langmuir and Langmuir-Blodgett films, which are generally thought to be applicable only for traditional amphiphile-like molecules such as lipids and surfactants. Various examples of Langmuir films of unusual organic molecules, supermolecules, polymers, liquid crystals, DNA strands, proteins, organic-inorganic hybrids, inorganic nanoparticles and nanorods are introduced. These descriptions should stimulate the reader in the design of various functional systems using concepts related to Langmuir-Blodgett technique.

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“…Okahata et al immobilized monolayers of dialkyl organosilane compounds onto SnO 2 electrodes by forming covalent linkages [58]. Permeability of an electrochemical probe (Fe(CN) 6 4À /Fe(CN) 6…”

Section: Monolayer On Solid Supportmentioning

confidence: 99%