Normal Vibrations of the Polymer Molecules of Helical Configuration. III. Polyoxymethylene and Polyoxymethylene‐d2

1963 ◽  
Vol 38 (3) ◽  
pp. 703-721 ◽  
Author(s):  
Hiroyuki Tadokoro ◽  
Masamichi Kobayashi ◽  
Yôichi Kawaguchi ◽  
Akira Kobayashi ◽  
Shunsuke Murahashi
Keyword(s):  
Normal Vibrations ◽  
Polymer Molecules ◽  
Helical Configuration

Normal Vibrations of the Polymer Molecules of Helical Conformation. V. Isotactic Polypropylene and Its Deuteroderivatives

1965 ◽  
Vol 42 (4) ◽  
pp. 1432-1449 ◽  
Author(s):  
Hiroyuki Tadokoro ◽  
Masamichi Kobayashi ◽  
Minoru Ukita ◽  
Katsutoshi Yasufuku ◽  
Shunsuke Murahashi ◽  
...  
Keyword(s):  
Isotactic Polypropylene ◽  
Helical Conformation ◽  
Normal Vibrations ◽  
Polymer Molecules

Normal Vibrations of the Polymer Molecules of Helical Conformation. VI. Polytetrahydrofuran and Deuterated Polytetrahydrofurans

1965 ◽  
Vol 42 (8) ◽  
pp. 2807-2816 ◽  
Author(s):  
Kiyohisa Imada ◽  
Hiroyuki Tadokoro ◽  
Akira Umehara ◽  
Shunsuke Murahashi
Keyword(s):  
Helical Conformation ◽  
Normal Vibrations ◽  
Polymer Molecules

The orientation of sickle hemoglobin fibers within fascicles

1988 ◽  
Vol 46 ◽  
pp. 400-401
Author(s):  
Christopher A. Miller ◽  
Bridget Carragher ◽  
William A. McDade ◽  
Robert Josephs
Keyword(s):  
Sickle Cell ◽  
Sickle Cell Anemia ◽  
Relative Orientation ◽  
Unit Cell ◽  
Red Cell ◽  
High Ph ◽  
Sickle Hemoglobin ◽  
Polar Crystal ◽  
Helical Configuration

Highly ordered bundles of deoxyhemoglobin S (HbS) fibers, termed fascicles, are intermediates in the high pH crystallization pathway of HbS. These fibers consist of 7 Wishner-Love double strands in a helical configuration. Since each double strand has a polarity, the odd number of double strands in the fiber imparts a net polarity to the structure. HbS crystals have a unit cell containing two double strands, one of each polarity, resulting in a net polarity of zero. Therefore a rearrangement of the double strands must occur to form a non-polar crystal from the polar fibers. To determine the role of fascicles as an intermediate in the crystallization pathway it is important to understand the relative orientation of fibers within fascicles. Furthermore, an understanding of fascicle structure may have implications for the design of potential sickling inhibitors, since it is bundles of fibers which cause the red cell distortion responsible for the vaso-occlusive complications characteristic of sickle cell anemia.

Advancing conjugated polymers into nanometer-scale devices

2006 ◽  
Vol 78 (10) ◽  
pp. 1803-1822 ◽  
Author(s):  
Wenping Hu ◽  
Hiroshi Nakashima ◽  
Erjing Wang ◽  
Kazuaki Furukawa ◽  
Hongxiang Li ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Molecular Level ◽  
Nanometer Scale ◽  
Transport Mechanisms ◽  
Phenylene Ethynylene ◽  
Polymer Molecules ◽  
Polymer Electronics ◽  
End Groups

In this article, we review the possibility of combining conjugated polymers with nanometer-scale devices (nanodevices), in order to introduce the properties associated with conjugated polymers into such nanodevices. This approach envisages combining the highly topical disciplines of polymer electronics and nanoelectronics to engender a new subdirection of polymer nanoelectronics, which can serve as a tool to probe the behavior of polymer molecules at the nanometer/molecular level, and contribute to clarifying transport mechanisms in conjugated polymers. In this study, we exemplify this combination, using a family of linear and conjugated polymers, poly(p-phenylene-ethynylene)s (PPEs) with thiolacetate-functionalized end groups.

Factors Controlling Hole Injection in Single Conjugated Polymer Molecules†

2009 ◽  
Vol 113 (16) ◽  
pp. 4739-4745 ◽  
Author(s):  
Leonid Fradkin ◽  
Rodrigo E. Palacios ◽  
Joshua C. Bolinger ◽  
Kwang-Jik Lee ◽  
William M. Lackowski ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Hole Injection ◽  
Polymer Molecules
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