Functional Liquid-Crystalline Polymers for Ionic and Electronic Conduction

Funahashi, Masahiro; Shimura, Hiroko; Yoshio, Masafumi; Kato, Takashi

doi:10.1007/430_2007_071

Cited by 77 publications

(32 citation statements)

References 117 publications

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“…[4][5][6][7][8]12 Liquid crystals are unique because molecular order and dynamic states are combined.…”

Section: ç Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11][12] Our strategy has been to develop new functional soft materials that show dynamic function using ordered molecular assemblies. [4][5][6][7][8]12 Liquid crystals are unique because molecular order and dynamic states are combined. [3][4][5][6][7][8] Liquid crystals exhibit a variety of ordered nanostructures as well as the simplest nematic structures that are widely used for informational display.…”

Section: ç Introductionmentioning

confidence: 99%

“…[4][5][6][7][8]12 Liquid crystals are unique because molecular order and dynamic states are combined. [3][4][5][6][7][8] Liquid crystals exhibit a variety of ordered nanostructures as well as the simplest nematic structures that are widely used for informational display. Nanostructures of liquid crystals such as bicontinuous cubic, smectic, columnar, and micellar cubic phases ( Figure 1) can serve as ordered functional materials.…”

Section: ç Introductionmentioning

confidence: 99%

“…[3][4][5][6][7]13 Moreover, control of intermolecular interactions such as hydrogen bonding, ionic interactions, and charge-transfer interactions as well as -and van der Waals interactions is important in the design of these ordered soft materials. [5][6][7][8] Physical gels are soft composite materials consisting of solvents and self-assembled networks of gelators. [10][11][12] These gels form microphase-separated structures (Figure 2a).…”

Section: ç Introductionmentioning

confidence: 99%

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Electro- and Photoactive Molecular Assemblies of Liquid Crystals and Physical Gels

Kato¹,

Tanabe²

2009

Chemistry Letters

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Self-organized structures of liquid crystals and self-assembled fibers have great potential as new functional materials. This article highlights self-organization of -conjugated molecules, leading to the induction of photonic, electronic, and electrochemical properties. Ç IntroductionSoft materials such as polymers, gels, and liquid crystals have attracted much attention because of their dynamic properties and easy processiblities.1-12 Our strategy has been to develop new functional soft materials that show dynamic function using ordered molecular assemblies. [4][5][6][7][8]12 Liquid crystals are unique because molecular order and dynamic states are combined.3-8 Liquid crystals exhibit a variety of ordered nanostructures as well as the simplest nematic structures that are widely used for informational display. Nanostructures of liquid crystals such as bicontinuous cubic, smectic, columnar, and micellar cubic phases (Figure 1) can serve as ordered functional materials. Phase transitions of these liquid-crystalline (LC) structures can also be used for the induction of dynamic properties. Unconventional molecular shapes as well as simple rod and disk shapes can function as mesogens. [3][4][5][6][7]13 Moreover, control of intermolecular interactions such as hydrogen bonding, ionic interactions, and charge-transfer interactions as well as -and van der Waals interactions is important in the design of these ordered soft materials.5-8 Physical gels are soft composite materials consisting of solvents and self-assembled networks of gelators. 10-12These gels form microphase-separated structures (Figure 2a). Gelators are low-molecular-weight molecules that form one-dimensional fibrous solid aggregates through hydrogen bonding or -interactions. The physical gels show sol-gel transitions because of noncovalent assembly. We have developed LC physical gels as a new class of soft materials (Figure 2b). For these materials, anisotropic solvents serve as functional fluids or templates for ordering of fibrous aggregates.In this highlight review, we focus on our recent development of electro-and photofunctional liquid crystals and physical gels. Our basic materials design is the introduction of electro-and photoactive moieties such as -conjugated systems into the molecular components of liquid crystals and physical gels. These functional groups align in the LC nanostructures, which result in the induction of anisotropy and enhanced functions. As the first topic, we describe electroactive liquid crystals based on oligothiophene, triphenylene, and viologen. We then show some examples of photoactive LC materials. In the last section, electro-and photoactive gels are described.

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“…[4][5][6][7][8]12 Liquid crystals are unique because molecular order and dynamic states are combined.…”

Section: ç Introductionmentioning

confidence: 99%

Section: ç Introductionmentioning

confidence: 99%

Section: ç Introductionmentioning

confidence: 99%

Section: ç Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electro- and Photoactive Molecular Assemblies of Liquid Crystals and Physical Gels

Kato¹,

Tanabe²

2009

Chemistry Letters

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show abstract

“…[1][2][3][4][5][6] In particular, 1D transport of ions, [2,[6][7][8][9][10][11][12][13][14][15] electrons, [16][17][18][19][20][21][22] or molecules [23] in columnar liquid crystals has attracted much attention. Recently, we developed 1D anisotropic ion conductors based on ionic columnar liquid crystals [11][12][13] and supramolecular columnar liquid crystals composed of ionic liquids and fan-shaped molecules having hydroxy groups.…”

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confidence: 99%