Electrochemical-Coupling Layer-by-Layer (ECC–LbL) Assembly

Li, Mao; Ishihara, Shinsuke; Akada, Misaho; Liao, Meiyong; Sang, Liwen; Hill, Jonathan P.; Krishnan, Venkata; Ma, Yuguang; Ariga, Katsuhiko

doi:10.1021/ja202768k

Cited by 140 publications

(87 citation statements)

References 64 publications

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“…32 However, most of the proposed methods require use of additional chemicals in reactions for covalent bond formation. In contrast, Li et al 33 has invented a novel methodology, electrochemical coupling LbL (ECC-LbL) assembly, that can be used to covalently immobilize organic functional units such as porphyrin, fullerene and fluorene into thin films having desired thicknesses and designable sequences for both homo-and heteroassemblies through ECC of carbazole groups (Figure 6a). …”

Section: Exploration Of Lbl Nanoarchitectonicsmentioning

confidence: 99%

Forming nanomaterials as layered functional structures toward materials nanoarchitectonics

et al. 2012

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Although progress in nanotechnology is anticipated to stimulate the development of innovative materials, the areas of nanotechnology and materials science are somehow separated with little common ground in current technologies. Nanotechnology has some analytical aspects that are beneficial mainly to the nanoscopic sciences at the atom or molecular levels. Experience of these advanced techniques has only been applied in synthetic approaches to macroscopic materials in rather immature level. Forming nanomaterials into hierarchic and organized structures is a rational way of preparing advanced functional materials. Recently, one of us coined the term materials' nanoarchitectonics to express this innovation. This review focuses on recent research to develop functional materials by forming nanomaterials into organized structures, especially in well-ordered layered structural motifs. This layered nanoarchitectonics can be achieved by using the versatile technology of layer-by-layer assembly. Reassembly of bulk materials into novel layered structures through layered nanoarchitectonics has created many innovative functional materials in a wide variety of fields as can be seen in ferromagnetic nanosheets, sensors, flame-retardant coatings, transparent conductors, electrodes and transistors, walking devices, drug release surfaces, targeting drug carriers and cell culturing.

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Section: Exploration Of Lbl Nanoarchitectonicsmentioning

confidence: 99%

Forming nanomaterials as layered functional structures toward materials nanoarchitectonics

et al. 2012

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“…254,255 Electrochemical stimuli from an electrode surface beneath the films initiates and permits LbL assembly to proceed, and the use of additional reactants is not necessary. The resulting di-Nalkylcarbazole, unlike other electropolymerizable precursors such as aniline and thiophene, is transparent in the visible light region.…”

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confidence: 99%

Layer-by-layer Nanoarchitectonics: Invention, Innovation, and Evolution

et al. 2013

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Materials fabrication with nanoscale structural precision based on bottom-up-type self-assembly has become more important in various current disciplines in chemistry including materials chemistry, organic chemistry, physical chemistry, analytical chemistry, biochemistry, colloid and surface chemistry, and supramolecular chemistry. Although the design of new materials based on nanoscale self-assembly is anticipated as a key concept, preparing complete three-dimensional structures at nanoscale precision remains a difficult target using current technologies. Rather, dimension-reduced approaches such as layering of two-dimensional nanostructures into precisely controlled lamellar nanomaterials are currently achievable. In particular, layer-by-layer (LbL) assembly is known as a highly versatile method for fabrication of controlled layered structures from various kinds of component materials using very simple, inexpensive, and rapid procedures. Therefore, fabrication of multilayer films through the LbL deposition process has attracted growing interest from various research communities. The high versatility and flexibility of LbL assembly is continuously creating new concepts, new materials, new procedures, and new applications. In this highlight review, we focus on nanoarchitectonics by LbL assembly. After an initial introduction on the invention and a brief history of the LbL assembly technique, innovations and the evolution of the technique are described based mainly on recent examples, which are categorized into two sections: (i) developments in methodology (technical, material, and phenomenological aspects with expansion of concept) and (ii) progress in applications (physical, chemical/biochemical, and biomedical applications).

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“…In a next-generation methodology, LbL assembly driven by commands from substrates such as electrodes has to be invented. Recently, we proposed a novel LbL strategy called electrochemical-coupling layer-by-layer (ECC-LbL) assembly, which involves electrochemical reactions driven by electrical control signals from electrodes [123]. For this strategy, we selected N-alkylcarbazole dimerization as a coupling reaction ( figure 13).…”

Section: Commanded Assemblymentioning

confidence: 99%

Paradigm shift from self-assembly to commanded assembly of functional materials: recent examples in porphyrin/fullerene supramolecular systems

Ishihara

et al. 2012

Science and Technology of Advanced Materials

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Current nanotechnology based on top-down nanofabrication may encounter a variety of drawbacks in the near future so that development of alternative methods, including the so-called bottom-up approach, has attracted considerable attention. However, the bottom-up strategy, which often relies on spontaneous self-assembly, might be inefficient in the development of the requisite functional materials and systems. Therefore, assembly processes controlled by external stimuli might be a plausible strategy for the development of bottom-up nanotechnology. In this review, we demonstrate a paradigm shift from self-assembly to commanded assembly by describing several examples of assemblies of typical functional molecules, i.e. porphyrins and fullerenes. In the first section, we describe recent progress in the design and study of self-assembled and co-assembled supramolecular architectures of porphyrins and fullerenes. Then, we show examples of assembly induced by external stimuli. We emphasize the paradigm shift from self-assembly to commanded assembly by describing the recently developed electrochemical-coupling layer-by-layer (ECC-LbL) methodology.

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Electrochemical-Coupling Layer-by-Layer (ECC–LbL) Assembly

Cited by 140 publications

References 64 publications

Forming nanomaterials as layered functional structures toward materials nanoarchitectonics

Forming nanomaterials as layered functional structures toward materials nanoarchitectonics

Layer-by-layer Nanoarchitectonics: Invention, Innovation, and Evolution

Paradigm shift from self-assembly to commanded assembly of functional materials: recent examples in porphyrin/fullerene supramolecular systems

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