ブックタイトル高分子　POLYMERS　62巻11月号

概要

高分子　POLYMERS　62巻11月号

Digest for English ReadersPolyMANGA 672COVER STORY: Topics and ProductsSingle-Molecules Imaging of Polymers 673Ken-ichi SHINOHARADoctor of EngineeringSchool of Materials Science, Japan AdvancedInstitute of Science and Technology (JAIST)Associate Professorshinoken@jaist.ac.jpwww.jaist.ac.jp/ms/labs/shinohara/Direct observation of a polymer chain deepens theunderstanding about structure and the function. Wesucceeded in direct observation of the long-chain branch(LCB) structure in a low density polyethylene (LDPE). Thesample is LDPE synthesized by the tubular process or thevessel process. The number, the length and the positionof LCB were measured directly by an AFM in an organicsolvent at room temperature. Single-molecules imaging ofmicro-Brownian movement in a chiral helical polymer wasachieved by a fast-scanning AFM at room temperature.We measured the diffusion coefficient at each part in thepolymer chain. It was estimated that this macromolecularmotion was a dynamic multiple interactions and theBrownian movement at a solid/liquid interface, and basedon the enthalpy entropy compensation. Furthermore,the macromolecular motor function was observed bya fast-scanning AFM. A molecule, which adsorbedto a chiral helical polymer having cholesteryl group[(-)-poly(ChOCPA)], was transported along the chain. Thismolecular transportation passed to long distances morethan 100-nm and it was observed for long time that wasmore than four minutes.Keywords: Single-Molecules Imaging / Polymer Chain /Brownian Movement / Enthalpy Entropy Compensation /Polyolefine / Chiral Helix / Macromolecular Machine /Molecular MotorX-ray Phase Tomography Visualizing Three- 675Dimensional Phase Separation StructuresAtsushi MOMOSEDoctor of EngineeringInstitute of Multidisciplinary Research forAdvanced Materiasl, Tohoku UniversityProfessormomose@tagen.tohoku.ac.jphttp://mml.tagen.tohoku.ac.jp/Conventional X-ray imaging techniques that rely onabsorption contrast are not usable effectively for polymersamples, which consist of low-Z elements with low X-rayabsorbance. This problem can be overcome by using X-rayphase contrast. X-ray phase tomography is realized basedon the phase-contrast techniques for highly sensitivethree-dimensional polymer observation. Applicationsof X-ray phase tomography to polymer blend samplesare demonstrated to reveal phase-separation structures,allowing quantitative analyses. Note that X-ray phasetomography is possible not only with synchrotron radiationbut also with a laboratory X-ray source. In combinationwith an X-ray imaging microscpe, a spatial resolution ofa micron has been achieved in three dimensions. In orderto approach a time resolution of a second, X-ray phasetomography with white synchrotron radiation is also beingdeveloped; that is, four-dimentional phase tomography.Keywords: X-ray Interferometry / Phase Contrast /Tomography / CT / Polymer Blend / Phase SeparationObservation of Thin Films through Scattering 677Hideaki YOKOYAMAPh. D.Department of Advanced Materials Science,Graduate School of Frontier Sciences, TheUniversity of TokyoAssociate Professoryokoyama@molle.k.u-tokyo.ac.jpwww.molle.k.u-tokyo.ac.jp/index.htmlPolymer thin film has been widely used for a varietyof applications. However, observing the structure ofthin films supported on substrates is still challenging.Recently Grazing Incidence Small Angle X-ray Scattering(GISAXS) emerged as an ideal tool to observe such thinfilm structures. However, GISAXS has to deal withcomplicated phenomena including transmission, refraction,and reflection in addition to scattering. Here, a brief andqualitative guide of GISAXS will be given primarily fornovice and non- users of GISAXS.Keywords: Scattering / GISAXS / Reflection / Refraction /Transmission / X-ray / Thin FilmsVisual Characterization of Nano-Sized679Photoresist Pattern FormationToshiro ITANIDoctor of EngineeringEUVL Infrastructure Development Center, Inc.General Managertoshiro.itani@eidec.co.jpwww.eidec.co.jpSemiconductor down-scaling is reaching target patternresolution sizes comparable to the polymer components ofresist chemistry. For this reason, a re-thinking of presentresist material and process concepts is crucial in meetingsuch stringent targets. To effectively do this, further高分子62巻11月号（2013年）c2013 The Society of Polymer Science, Japan659