| 高分子 Vol.60 No.7 |
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特集 共役ポリマーの新展開
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| 展望 COVER STORY: Highlight Reviews |
| 分子認識により重合する超分子ポリマーの新展開 Progress in Supramolecular Polymers Formed by Molecular Recognition |
灰野 岳晴 Takeharu HAINO |
| ＜要旨＞ Supramolecular
chemistry has developed into an established field where well-defined
supramolecular assemblies are generated via noncovalent interactions.
This concept has been extended to cover the formation of main-chain polymers.
Self-assembly of supramolecular polymers can be triggered by recognition-directed
association between terminal groups of a monomer. Thus, supramolecular
polymers are reversible and constitutionally dynamic materials whose
properties respond to external stimuli. This review highlights recent
developments in the field of supramolecular polymer chemistry. Keywords: Supramolecular Polymer / Supramolecular Chemistry / Self-Assembly / Molecular Recognition / Host-Guest Interaction / Non-Covalent Interaction |
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| π 共役ポリマーの超分子化学的配列 Supramolecular Approach toward Alignment of π-Conjugated Polymers |
竹内 正之 Masayuki TAKEUCHI |
| ＜要旨＞ Exploring
an approach to control the nanostructures of π-conjugated polymers has
been an important research target in materials science, which has led
to the creation of various functional materials with optimized π-electronic
properties. Several methods for controlling dimensionality, nanostructure,
and morphology have been achieved through chemical and physical techniques.
In addition to such methods for organizing conjugated polymers, we introduce
a supramolecular approach toward the alignment of conjugated polymers. Keywords: Conjugated Polymer / Alignment / Molecular Recognition / Supramolecular Assembly |
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| π 共役高分子錯体の界面配位プログラミング Surface Coordination Programming of π-Conjugated Metal Complex Polymers |
西原 寛 Hiroshi NISHIHARA |
| ＜要旨＞ π-Conjugated
metal complex polymers with unique geometrical structures and physicochemical
properties have attracted much attention for several decades. Here I
describe recent studies and future prospects on construction of π-conjugated
metal complex polymers at the solid surface based on “coordination programming”,
which is a new concept to utilize the advantages of coordination chemistry
to control the chemical bonds and arrangements of metal atoms and ions
for creation of superstructures. Keywords: Coordination Programming / Metal Complex / π-Conjugated Polymer / Electron Transfer / Redox Conduction / Surface Junction / Nanoscience |
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| カーボン系超分子ポリマーの現状と展望 Supramolecular Polymers from Carbon-Rich Compounds |
福島 孝典・山本 洋平 Takanori FUKUSHIMA and Yohei YAMAMOTO |
| ＜要旨＞ Carbon nanomaterials,
such as fullerenes, carbon nanotubes, and graphene, attract considerable
attention due to their huge potentials in various research fields, in
particular, electronics and optoelectronics. Many superb aspects of carbon
nanomaterials have also stimulated organic chemists to develop their
analogues by elaborate synthetic protocols. Hexabenzocoronene derivatives
that can be called “molecular graphene” are one of the representative
examples. As expected from the ｹ-stacked architecture of graphite, such
molecular graphenes tend to stack to form one-dimensional (1D) columnar
structures, which further assemble via secondary interactions, giving
rise to nanostructured materials, e.g., nanofiber and nanotube. The resulting
materials allow for anisotropic charge carrier transport through the
columns. In this article, we describe recent researches and future perspectives
on 1D assemblies composed of molecular graphenes. Keywords: Polycyclic Aromatic Hydrocarbons / Hexabenzocoronene / Fullerene / Self-Assembly / Nanostructures / Nanotube / Conducting Materials / Organic Electronics |
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| カーボンナノチューブ複合体のデザイン・創成−最近の展開 Design and Developments of Carbon Nanotube Composite Materials |
藤ヶ谷 剛彦・中嶋 直敏 Tsuyohiko FUJIGAYA and Naotoshi NAKASHIMA |
| ＜要旨＞ Carbon nanotubes
(CNTs) are a class of conjugated polymer having an ultimate electronic
and mechanical structure. Since the discovery of the CNTs, tremendous
amount of efforts have been focused for the design and developments of
CNT materials. Here, recent topics on the design and developments of
CNT composite materials are described. Keywords: Carbon Nanotube / Conjugated Polymer / Flexible Devise / Graphene Nanoribbon / Polyfluorene / Separation / Transparent Electrode |
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| トピックス COVER STORY:Topics and Products |
| 弱い水素結合を利用した環状共役パイ系の超構造の構築：多様な高次構造とその物性 Superstructure Construction of π-Conjugated Cyclic Compounds through Weak Hydrogen Bonds |
久木 一朗 Ichiro HISAKI |
| ＜要旨＞ To achieve
desired molecular arrangements in solid state, an understanding and controlling
of intermolecular interactions is required. In this study, we demonstrate
that weak hydrogen bonds provided by methyl ester groups, in addition
to carboxyl groups, play significant roles for the construction of various
superstructures based on dehydrobenzoannulenes derivatives. Keywords: Hydrogen Bond / CH / O Interaction / Polymorphism / Crystal Engineering / Dehydrobenzoannulene |
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| 環状スピロボラート型分子接合素子によるメタロ超分子ポリマーの作製 Construction of Metallosupramolecular Polymers Composed of Cyclic Spiroborate-Type Molecular Connecting Modules |
檀上 博史 Hiroshi DANJO |
| ＜要旨＞ Cyclic spiroborate
cyclophanes were prepared as molecular connecting modules for the construction
of supramolecular polymers. These cyclophanes are D3 symmetric and possess
bowl-shaped cavities at both sides of a symmetry plane, and effectively
glue spherical cationic guest to each other to form supramolecular chain
structures in solution and solid state. Keywords: Spiroborates / Molecular Connecting Modules / Twin Bowls / Supramolecular Polymers / Heterobimetallic Supramolecular Polymers |
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| ファイバー構造から広がる導電性高分子のナノエレクトロニクス Conducting Polymer Nanoelectronics with Fibrous Structure |
下村 武史・佐光 貞樹 Takeshi SHIMOMURA and Sadaki SAMITSU |
| ＜要旨＞ Conducting
polymers can self-assemble into a nanofibrous structure by π-π interaction
between polymer backbones. A nematic liquid crystal solvent promotes
the large-scale alignment of the nanofibers. A well-organized nanofibrous
structure of the conducting polymers yields high field-effect mobility
irrespective of alkyl side chain length, addressing the importance of
self-assembled nanostructures of polymers. Keywords: Conducting Polymer / Nanofiber / Self-Assembly / Branched Fiber / Liquid Crystal / Alignment / FET |
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| ナノ相分離を利用した液晶性π 共役分子組織体の電子機能 Electronic Functions of Liquid-Crystalline π-Conjugated Assemblies Based on Nanosegregation |
舟橋 正浩・加藤 隆史 Masahiro FUNAHASHI and Takashi KATO |
| ＜要旨＞ We have
developed new electronic materials forming nanosegregated structures
in the liquid- crystalline (LC) phases. Liquid crystals bearing π-conjugated
and ionic moieties exhibit electrochromism in the liquid crystal phase
without electrolyte solutions. In the case of side-chain liquid-crystalline
(LC) polysiloxanes, efficient hole transport is achieved in the nanosegregated
smectic phase. Keywords: Liquid Crystal / Organic Semiconductor / Side-Chain Liquid-Crystalline Polymer / Carrier Transport / π-Conjugated System / Carrier Mobility / Time-of-Flight (TOF) Method |
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| 分子エレクトロニクスを指向した被覆型分子ワイヤの合成 Syntheses of Insulated Molecular Wires Directed toward Molecular Electronics |
寺尾 潤 Jun TERAO |
| ＜要旨＞ This study
demonstrates a new method of synthesizing permethylated CD-based polyrotaxanes
involving the polymerization of linked rotaxane monomers. The insulated
molecular wires obtained by this method are highly soluble in organic
solvents and have
a high covering ratio, rigidity, hole mobility, and photoluminescence
efficiency. Keywords: Insulated Molecular Wire / Cyclodextrin / Hole Mobility / Molecular Electronics |
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| グローイングポリマー Growing Polymers: A Personal Account |
| 液晶ディスプレイとの出会い Research Encounters with Liquid Crystal Display Technology |
水崎 真伸 Masanobu MIZUSAKI |
| ＜要旨＞ I look back on my research life as a graduate student and as a researcher for the development of liquid crystal displays. Through my research life, I experienced that “hope” is the original expression which is produced by ourselves with great pains. |
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| 高分子科学最近の進歩 Front-Line Polymer Science |
| エチレンの選択的3 量化および4 量化による1-ヘキセンおよび1-オクテン合成触媒の最近の展開 Recent Development of Catalytic Selective Ethylene Trimerization and Tetramerization |
真島 和志・劒 隼人 Kazushi MASHIMA and Hayato TSURUGI |
| ＜要旨＞ Selective
trimerization and tetramerization of ethylene giving 1-hexene and 1-octene,
respectively, have attracted industrial and academic interest. Recent
mechanistic studies concerning to ethylene trimerization reaction are
briefly summarized: the isolation and characterization of Cr(I)-pyrrole
complexes and some titanium complexes that catalyze selective trimerization
of ethylene, and the direct detection of metallacycle species under the
catalytic condition that confirms the metallacycle mechanism. In addition,
here we review the recent rapid development of Cr-based tetramerization
catalysts. Although a mononuclear metallacycle mechanism, which has been
confirmed for the selective ethylene trimerization, has not explained
this selective ethylene tetramerization, new bimetallic metallacycle
mechanisms have recently been proposed, leading to new chromium complexes
that show high 1-octene selectivity. Keywords: Catalysts / Ethylene / Selective Trimerization / 1-Hexene / Selective Tetramerization / 1-Octene / Oligomerization / Metallacycle Mechanism |
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| Copyright(C) 2010 The Society of Polymer Science, Japan All Rights Reserved. |