Osamu Urakawa
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Explore the profile of Osamu Urakawa including associated specialties, affiliations and a list of published articles.
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11
Citations
20
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Recent Articles
1.
Otsuka Y, Ote N, Sun M, Shimma S, Urakawa O, Yamaguchi S, et al.
Analyst
. 2023 Feb;
148(6):1275-1284.
PMID: 36810589
Mass spectrometry imaging (MSI) is an effective technique for visualizing the distribution of lipids in tissues. The direct extraction-ionization methods using minute volumes of solvent for local components have the...
2.
Konishi S, Park J, Urakawa O, Osaki M, Yamaguchi H, Harada A, et al.
Soft Matter
. 2022 Sep;
18(38):7369-7379.
PMID: 36124981
Reversible cross-links by non-covalent bonds have been widely used to produce supramolecular hydrogels that are both tough and functional. While various supramolecular hydrogels with several kinds of reversible cross-links have...
3.
Iacob C, Matsumoto A, Brennan M, Liu H, Paddison S, Urakawa O, et al.
ACS Macro Lett
. 2022 Jun;
6(9):941-946.
PMID: 35650895
The impact of the chemical structure on ion transport, nanoscale morphology, and dynamics in polymerized imidazolium-based ionic liquids is investigated by broadband dielectric spectroscopy and X-ray scattering, complemented with atomistic...
4.
Miwa Y, Udagawa T, Urakawa O, Nobukawa S, Kutsumizu S
ACS Macro Lett
. 2022 May;
3(2):126-129.
PMID: 35590491
Stretching vibrations of aliphatic C-D bonds at the chain end and midchain site of partially deuterated polystyrene (PS) were determined by Fourier transform infrared (FT-IR) spectroscopy. It was first found...
5.
Shimada R, Urakawa O, Inoue T, Watanabe H
Soft Matter
. 2021 Jun;
17(25):6259-6272.
PMID: 34124720
Phase equilibrium and dielectric relaxation were examined for mixtures of liquid-crystalline (LC)-forming 4-cyano-4'-pentylbiphenyl (5CB) with dilute dimethyl phthalate (DMP). The mixtures were in an isotropic one-phase state at high temperatures...
6.
Yokokoji A, Kitayama W, Wichai K, Urakawa O, Matsumoto A, Vao-Soongnern V, et al.
Polymers (Basel)
. 2021 Jun;
13(11).
PMID: 34071398
Polymerized ionic liquids (PILs) doped with lithium salts have recently attracted research interests as the polymer component in lithium-ion batteries because of their high ionic mobilities and lithium-ion transference numbers....
7.
Urakawa O, Yasue A
Polymers (Basel)
. 2019 Jul;
11(7).
PMID: 31284499
We examined the composition and molecular weight dependence of the glass transition temperature in detail for two types of hydrogen bonding miscible blends: poly (2-vinyl pyridine)/poly (vinyl phenol) (2VPy/VPh) and...
8.
Urakawa O, Yamane M, Tomie S, Inoue T, Shikata T, Adachi K
J Chem Phys
. 2018 Jan;
148(3):034904.
PMID: 29352792
Relationship between segmental relaxation and normal-mode relaxation has been studied for molten poly(butylene oxide)s having various molecular weights by broadband dielectric spectroscopy over a wide temperature (T) range. We found...
9.
Urakawa O, Kaneko F, Kobayashi H
J Phys Chem B
. 2012 Nov;
116(49):14461-9.
PMID: 23163576
Structure and dynamics of semicrystalline polymer films composed of syndiotactic polystyrene (sPS) and 2-butanone were examined through X-ray diffraction, polarized FTIR, and dielectric relaxation measurements. The X-ray and FTIR measurements...
10.
Miwa Y, Urakawa O, Doi A, Yamamoto K, Nobukawa S
J Phys Chem B
. 2011 Dec;
116(4):1282-8.
PMID: 22206222
A glass transition temperature, T(g), and a β relaxation temperature, T(β), of spin-labeled polystyrene (PS) having a number average molecular weight (M(n)) of ca. 25 kDa were determined by the...