POLYMERS Vol.61 No.6
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Polymer Materials Based on Host-Guest Interactions
COVER STORY: Highlight Reviews
The Diversity of Cross-linked Materials Using Polymer Inclusion Complexes Kazuaki KATO, Kohzo ITO
<Abstract> Cyclic host molecules, such as crown ethers and cyclodextrins, form inclusion complexes not only with small molecules but various polymers. Diversity of the inclusion phenomena and the complexes enables us to design various materials. We introduce herein some new cross-linked
polymeric materials using the inclusion between cyclodextrins and polymer guests, focusing on their characteristic properties and functionalities. Besides, recent advances in the materials design based on the diversity of inclusion complexes are briefly reviewed.
Keywords: Cyclodextrin / Molecular Recognition / Polyrotaxane / Cross-linking / Slide-Ring Material / Material Design / Organic-Inorganic Hybrid / Viscoelastic Relaxation / Sliding Transition
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Characteristics and Functions of Movable Bonding Point-Tethering Polymer Toshikazu TAKATA
<Abstract> Polymers containing a flexible and strong supramolecular structure like the rotaxane structure in their skeletons have attracted much attention because of prospects of the unprecedented property and function. The effect of the introduction of a rotaxane moiety into the bonding points of graft copolymer and cross-linked polymer on the properties and functions is discussed with a few typical examples.
Keywords: Rotaxane / Catenane / Polyrotaxane / Bonding Point in Polymer / Graft Polyrotaxane / Polyrotaxane Network / Recyclable Network Polymer
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Molecularly Imprinted Materials: Applications to Fluorescent Sensing Systems Hirobumi SUNAYAMA, Toshifumi TAKEUCHI
<Abstract> Molecular recognition materials prepared by molecular imprinting have been attractive as substitutes of biomolecules, and many efforts have been made to prepare signaling molecularly imprinted polymers (MIPs) for target sensing. MIPs showing fluorescence properties have attracted attention due to their high sensitivity and the simplicity of operation. In this article, recent development on fluorescent sensing using MIPs is described.
Keywords: Molecular Imprinting / Synthetic Receptor / Fluorescent Detection / Molecular Recognition
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COVER STORY: Topics and Products
Fluorescence Inclusion Crystals with Supramolecular Host and External Stimuli Responsive Switching Norimitsu TOHNAI
<Abstract> A novel fluorescent inclusion host has been designed and prepared by supramolecular approach. The supramolecular host was formed by a chair-like hydrogen-bonding network and crystallized with a variety of solvent molecules because of its awkward shape and the presence of receptor moieties. The resulting crystals show guest-dependent fluorescence from blue-green to orange-yellow.
Keywords: Fluorescence / Inclusion Crystal / Organic Salt / Supramolecular Host
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Synthesis of New Macrocyclic Molecules “Pillar[5]arenes” and Their Application for Supramolecular Materials Tomoki OGOSHI, Tadaaki YAMAGISHI
<Abstract> Pillar[5]arenes have repeating units connected by methylene bridges at the para-position, which produce a unique symmetrical pillar architecture. Based on the unique pillar-shaped architecture and high functionality, we prepared new functional supramolecular materials.
Keywords: Pillar[5]arene / Host-Guest Complex / Supramolecular Chemistry / Macrocyclic Compound
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Asymmetric Synthesis by Chiral Liquid Crystalline Solvents Yasuhiro ISHIDA
<Abstract> Two-component liquid crystals were found to offer a unique reaction environment, in which high structural order and proper flexibility were realized at the same time. Within the liquid-crystalline matrix provided by enantiopure amphiphilic aminoalcohols, the photo-dimerization of anthracene derivatives proceeded with high probability and with excellent regio-, diastereo-, and/or enantioselectivity.
Keywords: Asymmetric Synthesis / Chirality / Liquid Crystals / Photochemistry / Template Synthesis
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Polymer Science and I: A Personal Account
With a Passion for Research Hiroki IIDA
<Abstract> This essay traces my research life that started with small organocatalysts simulating enzymatic functions.
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Front-Line Polymer Science
Recent Development of Photo Curable Resist for Photo Nanoimprint Lithography Process Yasuhide KAWAGUCHI, Yuriko KAIDA
<Abstract> The nanoimprint lithography process is characterized by low cost, high throughput and high resolution and is a much simpler process than conventional optical lithography. Recently, it has attracted much attentionin a variety of industrial fields such as electronics, optics, photonics or biology. Especially, photo nanoimprint lithography fabricatesnanoscale patterns by mechanically deforming an imprint resist that is typically made from a monomer or polymer and cured using UV light. Based on such a situation, the recent development of photo curable resist for photo nanoimprint lithography is described in this article.
Keywords: Nanoimprint Lithography / Photo-Curable Resin / Mold / Ultra-Violet Light
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