H
Hideki Shirakawa
Researcher at University of Tsukuba
Publications - 235
Citations - 7512
Hideki Shirakawa is an academic researcher from University of Tsukuba. The author has contributed to research in topics: Polyacetylene & Liquid crystal. The author has an hindex of 39, co-authored 235 publications receiving 7355 citations. Previous affiliations of Hideki Shirakawa include Ritsumeikan University.
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Synthesis and properties of polythiophene derivatives with ferroelectric liquid crystalline substituents
TL;DR: In this article, a chiroptical liquid crystalline substituent with fluorine-containing asymmetric moiety was introduced into the 3 position of thiophene ring.
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Soliton spin density in polyacetylene studied by endor in pristine and 13C-enriched cis-rich sample
S. Kuroda,Hideki Shirakawa +1 more
TL;DR: In this paper, a comparison of the spectra between pristine and 13C-enriched undoped cis-rich (CH)X down to 4K was performed and it was shown that the intrinsic spin density of the soliton, confirmed by the previous endor analysis in pristine system, is not observable in the latter system because of the line shape distortion due to the overlapping of those structurs due to nuclear frequencies.
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Dopant Structure in FeCl3-doped Polyacetylene Studied by X-Ray Absorption Spectroscopy and X-Ray Photoelectron Spectroscopy
TL;DR: In this article, the dopant structure in FeCl3-doped polyacetylene was studied from the analysis of Fe K-edge EXAFS and XANES, measured by use of synchroton radiation.
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SPECTROSCOPIC STUDIES ON β-CAROTENE DOPED WITH IODINE AND SULFUR TRIOXIDE—DOPED POLYACETYLENE MODELS
TL;DR: In this paper, the Raman and absorption spectra of β-carotene doped with iodine and sulfur trioxide were studied, and it was shown that the doping gave significant effects on the spectra which were interpreted as arising from the transfer of an electron from a local site in β-Carotene to a dopant and the resultant shortening of the length of double-bond conjugation.
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Photoluminescence and electroluminescence of liquid crystalline aromatic conjugated polymers
TL;DR: In this article, an aligned liquid crystalline aromatic conjugated polymers were aligned by heating the substrates and then gradually cooled to LC temperature under an external magnetic field, and the polarized photoluminescence (PL) peak of perpendicular direction to the magnetic field is 30 % more intensive than that of the parallel direction.