A High‐Speed Passive‐Matrix Electrochromic Display Using a Mesoporous TiO<sub>2</sub> Electrode with Vertical Porosity

Weng, Wu; Higuchi, Tetsuya; Suzuki, Masao; Fukuoka, Toshimi; Shimomura, Takeshi; Ono, Masashi; Radhakrishnan, Logudurai; Wang, Hongjing; Suzuki, Norihiro; Oveisi, Hamid; Yamauchi, Yusuke

doi:10.1002/anie.200907008

Cited by 128 publications

(44 citation statements)

References 14 publications

(13 reference statements)

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“…For example, Yamauchi et al demonstrated a high-speed and high-resolution electrochromic passive-matrix display using a leuco dye with a mesoporous TiO 2 electrode with vertical pores (Figure 18). 463 In this case, the vertical pores of the electrode can support effective diffusion of leuco dyes perpendicular to the electrode and can prevent the diffusion of the dye around the electrode. Such application of leuco dyes to electrochromic display (ECD) devices has high potential to realize a full-color reflective display with low production costs.…”

Section: Mesoporous Non-siliceous Filmsmentioning

confidence: 99%

Nanoarchitectonics for Mesoporous Materials

Ariga

Vinu

Yamauchi

et al. 2011

Bulletin of the Chemical Society of Japan

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714

411

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Although mesoporous materials have well-defined pore structures, these fine materials can surprisingly be produced by employing a set of conventional and simple procedures such as mixing, heating, filtration, and washing, using low-cost materials. They can be regarded as easy-to-make bulk nanostructured materials. Mesoporous materials have great potential for use in both macroscopic applications and nanotechnology. In this account, we introduce examples of recent developments in mesoporous materials involving innovations in their components and structural designs and concentrating on our own recent progress. These examples include syntheses of mesoporous silica, metal oxides, semiconductive materials, metals, alloys, organic composites, biomaterial composites, carbon, carbon nitride, and boron nitride, as innovative components. As structural innovations for mesoporous materials, various film preparations, pore alignments, and hierarchic structures are described together with their related functions including sensing and controlled release of target molecules. Why Mesoporous Materials? Bulk Quantities and Precise StructuresThere is little doubt that nanotechnology and related technologies are making significant contributions to current research and development which will eventually be felt in our day-to-day lives. Device miniaturization in such products as cellular phones and portable computers has irrevocably changed our lifestyles. Portable devices allow us to work and communicate wherever we are in the world in contrast to the previous situation where machine operation required a human presence. Greater freedom in our work and leisure dispositions should diminish over-concentration of populations in cities and may ultimately reduce energy consumption and waste production.So far, device innovations have been due to development of top-down approaches, especially sophisticated microfabrication techniques. 17 However, those top-down techniques are not useful for materials innovation where chemical processes are used as the operating principle. Rather, so-called bottom-up approaches are expected to create novel functional materials having well-controlled structural features with nanometric precision. Bottom-up approaches rely on self-assembly processes to form selected structures through spontaneous association of atoms, molecules, clusters, and particles. 818 Furthermore, assisted assembly techniques using external influences are provided by LangmuirBlodgett (LB) method 1928 and layer-by-layer (LbL) adsorption 2936 and provide significant contributions for materials' fabrication. According to these concepts, molecular complex formation, 3741 molecular array control, 4252 and microscopic structural design 5361 have been widely investigated leading to generation of a large quantity of scientific knowledge.Ideally, materials should be produced in a series of easy processes to yield bulk quantity without loss of nanometric structural features and some categories of material already satisfy this condition. For exampl...

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Section: Mesoporous Non-siliceous Filmsmentioning

confidence: 99%

Nanoarchitectonics for Mesoporous Materials

Ariga

Vinu

Yamauchi

et al. 2011

Bulletin of the Chemical Society of Japan

Self Cite

714

411

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“…P123 has previously been used for the preparation of mesoporous titania films. 33,34 Larger pores were provided by the aid of an organic additive, polypropylene glycol (PPG, M n ~4,000), which was used as a swelling agent.…”

Section: Preparation Of Mesoporous Titania Substratesmentioning

confidence: 99%

Antimicrobial performance of mesoporous titania thin films: role of pore size, hydrophobicity, and antibiotic release

Atefyekta¹,

Ercan²,

Karlsson³

et al. 2016

IJN

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Implant-associated infections are undesirable complications that might arise after implant surgery. If the infection is not prevented, it can lead to tremendous cost, trauma, and even life threatening conditions for the patient. Development of an implant coating loaded with antimicrobial substances would be an effective way to improve the success rate of implants. In this study, the in vitro efficacy of mesoporous titania thin films used as a novel antimicrobial release coating was evaluated. Mesoporous titania thin films with pore diameters of 4, 6, and 7 nm were synthesized using the evaporation-induced self-assembly method. The films were characterized and loaded with antimicrobial agents, including vancomycin, gentamicin, and daptomycin. Staphylococcus aureus and Pseudomonas aeruginosa were used to evaluate their effectiveness toward inhibiting bacterial colonization. Drug loading and delivery were studied using a quartz crystal microbalance with dissipation monitoring, which showed successful loading and release of the antibiotics from the surfaces. Results from counting bacterial colony-forming units showed reduced bacterial adhesion on the drug-loaded films. Interestingly, the presence of the pores alone had a desired effect on bacterial colonization, which can be attributed to the documented nanotopographical effect. In summary, this study provides significant promise for the use of mesoporous titania thin films for reducing implant infections.

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“…[51] demonstrated a high-speed passive-matrix EC display using a leuco modified mesoporous TiO 2 electrode with vertical porosity (Figure 20). The device exhibited better background whiteness, which improves readability and reduces eyestrain.…”

Section: Nanostructures In Ec Materials and Devicesmentioning

confidence: 99%

Application of Nanostructures in Electrochromic Materials and Devices: Recent Progress

2010

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The recent progress in application of nanostructures in electrochromic materials and devices is reviewed. ZnO nanowire array modified by viologen and WO3, crystalline WO3 nanoparticles and nanorods, mesoporous WO3 and TiO2, poly(3,4-ethylenedioxythiophene) nanotubes, Prussian blue nanoinks and nanostructures in switchable mirrors are reviewed. The electrochromic properties were significantly enhanced by applying nanostructures, resulting in faster switching responses, higher stability and higher optical contrast. A perspective on the development trends in electrochromic materials and devices is also proposed.

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A High‐Speed Passive‐Matrix Electrochromic Display Using a Mesoporous TiO₂ Electrode with Vertical Porosity

Cited by 128 publications

References 14 publications

Nanoarchitectonics for Mesoporous Materials

Nanoarchitectonics for Mesoporous Materials

Antimicrobial performance of mesoporous titania thin films: role of pore size, hydrophobicity, and antibiotic release

Application of Nanostructures in Electrochromic Materials and Devices: Recent Progress

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A High‐Speed Passive‐Matrix Electrochromic Display Using a Mesoporous TiO2 Electrode with Vertical Porosity

Cited by 128 publications

References 14 publications

Nanoarchitectonics for Mesoporous Materials

Nanoarchitectonics for Mesoporous Materials

Antimicrobial performance of mesoporous titania thin films: role of pore size, hydrophobicity, and antibiotic release

Application of Nanostructures in Electrochromic Materials and Devices: Recent Progress

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Product

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A High‐Speed Passive‐Matrix Electrochromic Display Using a Mesoporous TiO₂ Electrode with Vertical Porosity