POLYMERS@Vol.60@No.1
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COVER STORY
Turning Points in a Researchers Life
COVER STORY: Highlight Reviews
Biophysical Chemistry Shohei INOUE
<Abstract> This is the research subject of Kazutomo Imahori written by the author in his book entitled eOptical Rotationf. Biophysical Chemistry literally means a field of physical chemistry specializing in biological substances.
However, the combination of the three major fields of natural science is considered to imply the intention of the author not to limit the subject to a specific field of physical chemistry, but to place interest in natural science in general. I was much impressed by this implication and this has profoundly influenced on my later research.
Keywords: Physical Chemistry / Biology / Natural Science
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Foundations of a Research Life Tisato KAJIYAMA
<Abstract> Three important research capabilities, gAbility for Observation and Inspectionh, gAbility for Seeking and Penetrationh and gAbility for Developmenth are fostered through our various scientific experiences being encountered during our research studies, Therefore, in order to acquire these abilities, it is essential to have formative experiences and significant influences at an early stage of our scientific research life.
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Approach to Affinity Latex Haruma KAWAGUCHI
<Abstract> There are two symbolic articles, Herkins's paper and Smith & Ewart's paper, to show the dawn in the science of polymer latex. After concentrated studies on the mechanism and kinetics of particle-forming polymerization such as emulsion polymerization and dispersion polymerization, researchers' interest was focused on functional polymer particles. Around the year 1980th, two great polymer scientists, Profs. Rembaum and Ugelstad, stimulated us by publishing exciting papers on biomedical applications of latex particles. On the occasion of Profs. Rembaum and Ugelstad's visit to Japan, I escorted them between Tokyo and Fukui (venue of 2nd Symposium on Polymeric Microspheres) and could experience firsthand their personality which made a great impression on me. This encounter encouraged me to challenge the study on biomedical polymer particles. After a meeting with Hiroshi Handa, professor of Tokyo Institute of Technology, we felt challenged to develop a new era of latex particles, that is, affinity latex, which was used for bioseparation, diagnosis, and bioassay.
Keywords: Emulsion Polymerization / Polymer Particle / Functional Microsphere / Affinity Latex
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When I First Met Sir Sam Masao DOI
<Abstract> I first met Sir Sam at his office at High Holborn where he was working as a chairperson of the Science Research Council. Within the limited time allotted for me, he explained to me 7 problems, which he was interested in at that time. All were quite fascinating and stimulated my imagination. However, I was not able to solve any of them until I started working on a different problem. Among many things that Sir Sam gave me, I now think what was the most valuable to me.
Keywords: S. F. Edwards / Entanglement / Doi-Edwards Theory
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Macromolecular Recognition Akira HARADA
<Abstract> While we were studying interactions of various polymers with cyclodextrins(CDs), we found that CDs form inclusion complexes with some polymers with high selectivity. Polyrotaxanes in which many cyclodextrins (CDs) are entrapped on a polymer chain were (accidentally) obtained by capping each end of the polymer chain of the complex of a-CDs with poly(ethylene glycol) using bulky stopper groups. Polyrotaxanes have been investigated by many researchers. We have developed supramolecular polymers, molecular machines, artificial polymerases, muscles, and energy conversion systems.
Keywords: Macromolecular Recognition / Cyclodextrin / Polyrotaxane / Molecular Tube / Molecular Machine / Artificial Polymerase / Artificial Muscle
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Some Encounters and Surface Forces Measurement Kazue KURIHARA
<Abstract> This note describes the background and special encounters which promoted the shift of the author's research to the surface forces measurements from the biomimetic design of functional systems using molecular assemblies.
Keywords: Surface Forces Measurement / Molecular Assemblies / Nano-Technology / Precision Technology
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You Never Can Serve Companies Yushu MATSUSHITA
<Abstract> Before I became a graduate student, I met a very glamorous person, the departed Prof. Teruo Fujimoto, who is my lifetime hero. I was taught anionic polymerization techniques in a fundamental course by him. My thesis work was on gPreparation of Triblock Copolymers of the ABC Type and Their Propertiesh and I keep doing research in this field since more than thirty years, thanks to Prof. Fujimoto, who died suddenly twenty years ago. In this short note, I would like to stress on the importance of the chance to meet life-changing role models rarely happens in our long life.
Keywords: Lifetime Hero / Attractive Character / Anionic Polymerization / ABC Triblock Copolymer
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Think of Opportunity Instead of Security Mizuo MAEDA
<Abstract> We have prepared DNA nanoparticles with a nanometer-sized vinyl polymer core or a colloidal gold core surrounded by a single-stranded DNA corona. The DNA nanoparticles disperse completely in an aqueous medium. Interestingly, when complementary single-stranded DNA is added to form the fully matched double helix on the surface, the DNA nanoparticles become unstable and spontaneously form aggregates. Furthermore, we have found that the double-stranded DNA-carrying nanoparticles acquire high colloidal stability when a terminal single-base mismatch exists at the interface between the DNA corona and the disperse medium. The findings have been made at Kyushu University and at RIKEN. Moving always brought me opportunities to meet highly-motivated and -talented colleagues. Exploiting the unique colloidal behavior of the DNA nanoparticles, we have devised a facile single-nucleotide polymorphism genotyping method.
Keywords: DNA / Double Strand / Single-Base Mismatch / Graft Copolymer / Polymer Colloid / Gold Nanoparticle / Genotyping
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Looking Back on My Research Life c Hiroshi WATANABE
<Abstract> I was able to deepen my research in the field of rheology when I dropped out of PhD course at Osaka University to get employed at that university, when I studied abroad as a post-doc fellow, and when I moved to Kyoto University as an associate professor. These turning points were utterly owing to the support from many friends, and I cordially appreciate their kindness.
Keywords: Research / Turning Point / ƒÎƒ¿ƒËƒÑƒ¿ ƒÏƒÃƒÇ / Support & Kindness
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Experience of Serendipity in Polymer Research Isaburo FUKAWA
<Abstract> Reviewing research on and serendipity in discoveries of polymers in Asahikasei Corporation, such as synthetic elastomer, polyethylene, polyetherketone and polycarbonate.
Keywords: Polyetherketone / Polycarbonate / Non-Phosgene / Serendipity
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Malaria Control and a Sunset Takaaki ITOH
<Abstract> I have been engaged in malaria control research for more than 20 years and was able to contribute to developing a long lasting insecticidal net, called gOlyset neth, an effective tool for malaria control. At my childhood, I longed to see a sun setting in the Indian Ocean. At the beginning of my research, I came to know about the existence of malaria infections in Saudi Arabia and immediately related a sunset in the desert with the sunset in the Indian Ocean. Since then, I delightfully decided to pursue malaria control as my lifelong work.
Keywords: Malaria / Olyset / Mosquito / Net
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My Passion for the Fluorene Mitsuaki YAMADA
<Abstract> Ifve been sticking at fluorene chemistry throughout my 23-year's business career. Thanks to support from people around me, fluorene chemicals have grown up to a certain scale of business. I hope introducing my exciting experience with fluorene will be helpful to the readers.
Keywords: Fluorene / BPEF
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Growing Polymers: A Personal Account
Like a Living Polymer Zhengguo CAI
<Abstract> This personal account reviews my research experiences with development and application of stereospecific living polymerization of hydrocarbon monomers.
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Towards a Facile Approach gSimple is Besth Shinji SUGIHARA
<Abstract> I have prepared various self-associations using precision polymerization such as living cationic polymerization, ATRP, and RAFT dispersion polymerization. Along the way, I have been pursuing gsimple and facileh polymerizations and the resulting associations. This personal account, Growing Polymers, reviews such my research experiences.
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Front-Line Polymer Science
Smectic Liquid Crystal Formed from Hard-Rod Polymers Kento OKOSHI and Junji WATANABE
<Abstract> Liquid crystal phases formed by hard-rod polymers have been studied extensively in both theoretical and experimental ways. In the initial stage of studies, it has been shown that a system of long hard molecules can exhibit an orientational ordered nematic phase if the density is efficiently high. Recently, computer simulation has played an important role in understanding the liquid crystalline behavior of systems composed of hard-rod molecules, and given the first indication that the smectic and columnar phases can also be formed by systems of molecules which interact through excluded volume interaction alone. In fact, the experimental studies carefully done for hard-rod polysilane in a thermotropic system have clarified the well-defined phase sequence including nematic and smectic phases. These will be reviewed in this article.
Keywords: Hard-Rod Polymer / Excluded Volume Effect / Polysilane / Nematic Liquid Crystal / Smectic Liquid Crystal
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