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Research Output 1983 2019

2019

Necklace-like microstructure in shallow-quenched aqueous solutions of poly(n-isopropylacrylamide), detected by advanced small-angle neutron scattering methods

Koizumi, S., Masahiko, A. & Schwahn, D., Jan 1 2019, In : Soft Matter. 15, 4, p. 671-682 12 p.

Research output: Contribution to journalArticle

Neutron scattering
neutron scattering
Gels
gels
aqueous solutions
2018
1 Citation (Scopus)

Stretching PEO-PPO Type of Star Block Copolymer Gels: Rheology and Small-Angle Scattering

Mortensen, K. & Masahiko, A., Dec 18 2018, In : ACS Macro Letters. 7, 12, p. 1438-1442 5 p.

Research output: Contribution to journalArticle

Polyphenylene oxides
Polyethylene oxides
Rheology
Block copolymers
Stretching
2016
13 Citations (Scopus)

Friction Coefficient of Well-Defined Hydrogel Networks

Fujiki, M., Ito, M., Mortensen, K., Yashima, S., Tokita, M. & Masahiko, A., Jan 26 2016, In : Macromolecules. 49, 2, p. 634-642 9 p.

Research output: Contribution to journalArticle

Hydrogel
Hydrogels
Gels
Friction
Polymers
14 Citations (Scopus)

Structural Study of Four-Armed Amphiphilic Star-Block Copolymers: Pristine and End-Linked Tetronic T1307

Mortensen, K. & Masahiko, A., Feb 16 2016, In : ACS Macro Letters. 5, 2, p. 224-228 5 p.

Research output: Contribution to journalArticle

Polyphenylene oxides
Block copolymers
Stars
Polyethylene oxides
Micelles
2015
Hydrogels
Neutron scattering
X ray scattering
Particles (particulate matter)
Polymers
2014
8 Citations (Scopus)

Phase separation in binary polymer solution: Gelatin/Poly(ethylene glycol) system

Yanagisawa, M., Yamashita, Y., Mukai, S. A., Masahiko, A. & Tokita, M., Jan 1 2014, In : Journal of Molecular Liquids. 200, PA, p. 2-6 5 p.

Research output: Contribution to journalArticle

gelatins
Gelatin
Polymer solutions
Phase separation
Polyethylene glycols
2013
38 Citations (Scopus)

Liquid crystalline inorganic nanosheets for facile synthesis of polymer hydrogels with anisotropies in structure, optical property, swelling/deswelling, and ion transport/fixation

Miyamoto, N., Shintate, M., Ikeda, S., Hoshida, Y., Yamauchi, Y., Motokawa, R. & Masahiko, A., Feb 4 2013, In : Chemical Communications. 49, 11, p. 1082-1084 3 p.

Research output: Contribution to journalArticle

Hydrogels
Nanosheets
Swelling
Polymers
Anisotropy
3 Citations (Scopus)

Nonsolvents-induced swelling of poly(methyl methacrylate) nanoparticles

Shundo, A., Hori, K., Penaloza, D. P., Yoshihiro, K., Masahiko, A. & Tanaka, K., Oct 21 2013, In : Physical Chemistry Chemical Physics. 15, 39, p. 16574-16578 5 p.

Research output: Contribution to journalArticle

Polymethyl Methacrylate
polymethyl methacrylate
swelling
Swelling
Nanoparticles
2012
1 Citation (Scopus)

Dehydration and vitrification of corneal gel

Masahiko, A., Matsuura, T., Maruoka, S. & Ogata, N., Aug 21 2012, In : Soft Matter. 8, 31, p. 8157-8163 7 p.

Research output: Contribution to journalArticle

vitrification
Vitrification
Dehydration
dehydration
Gels
12 Citations (Scopus)

Organic-inorganic nanocomposite gels as an in situ gelation biomaterial for injectable accommodative intraocular lens

Annaka, M., Mortensen, K., Matsuura, T., Ito, M., Nochioka, K. & Ogata, N., Jul 21 2012, In : Soft Matter. 8, 27, p. 7185-7196 12 p.

Research output: Contribution to journalArticle

Intraocular lenses
gelation
Biocompatible Materials
Gelation
Nanocomposites
9 Citations (Scopus)
carbopol 940
Micelles
Polyelectrolytes
block copolymers
Surface-Active Agents
121 Citations (Scopus)
Molybdenum
Oxygen
Oxidation
Catalysts
Water
2011
2 Citations (Scopus)

Changing the volume of a giant macrocycle: The swelling of the macrocycle with organic solvents

Harano, A., Tanaka, M., Nakagaki, T., Masahiko, A., Ideta, K., Goto, K. & Shinmyozu, T., May 21 2011, In : Organic and Biomolecular Chemistry. 9, 10, p. 3611-3614 4 p.

Research output: Contribution to journalArticle

Complexation
swelling
Organic solvents
Swelling
Molecules
16 Citations (Scopus)

Design of an injectable in situ gelation biomaterials for vitreous substitute

Masahiko, A., Mortensen, K., Vigild, M. E., Matsuura, T., Tsuji, S., Ueda, T. & Tsujinaka, H., Nov 14 2011, In : Biomacromolecules. 12, 11, p. 4011-4021 11 p.

Research output: Contribution to journalArticle

Biocompatible Materials
Gelation
Biomaterials
Polymers
Mechanical stability
2010

Anisotropic swelling behavior of the cornea

Masahiko, A., Matsuura, T., Ota, T., Nochioka, K. & Hara, Y., Nov 1 2010, In : Folia Japonica de Ophthalmologica Clinica. 3, 11, p. 1180-1186 7 p.

Research output: Contribution to journalArticle

Cornea

Dynamic light scattering study of salt effect on phase behavior of pig vitreous body and its microscopic implication

Matsuura, T., Masahiko, A., Okamoto, M., Tsujinaka, H. & Hara, Y., Nov 2010, In : Folia Japonica de Ophthalmologica Clinica. 3, 11, p. 1107-1112 6 p.

Research output: Contribution to journalArticle

Vitreous Body
Swine
Salts
Dynamic Light Scattering

Dynamic light scattering study on pig cornea

Annaka, M., Matsuura, T., Shimoyama, K., Nochioka, K. & Hara, Y., Nov 1 2010, In : Folia Japonica de Ophthalmologica Clinica. 3, 11, p. 1101-1106 6 p.

Research output: Contribution to journalArticle

Cornea
Swine
Dynamic Light Scattering
25 Citations (Scopus)

Effective separation of peptides using highly dense thermo-responsive polymer brush-grafted porous polystyrene beads

Mizutani, A., Nagase, K., Kikuchi, A., Kanazawa, H., Akiyama, Y., Kobayashi, J., Masahiko, A. & Okano, T., Aug 1 2010, In : Journal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences. 878, 24, p. 2191-2198 8 p.

Research output: Contribution to journalArticle

Polystyrenes
Brushes
Polymers
Peptides
Atom transfer radical polymerization

Erratum: Thermoresponsive polymer brush surfaces with hydrophobic groups for all-aqueous chromatography (ACS Applied Materials & Interfaces (2010) 2 (1247)

Nagase, K., Kumazaki, M., Kanazawa, H., Kobayashi, J., Kikuchi, A., Akiyama, Y., Masahiko, A. & Okano, T., Dec 22 2010, In : ACS Applied Materials and Interfaces. 2, 12, 1 p.

Research output: Contribution to journalComment/debate

Brushes
Chromatography
Polymers
33 Citations (Scopus)

Photochemical and thermal hydrogen production from water catalyzed by carboxylate-bridged dirhodium(ii) complexes

Tanaka, S., Masaoka, S., Yamauchi, K., Masahiko, A. & Sakai, K., Dec 14 2010, In : Dalton Transactions. 39, 46, p. 11218-11226 9 p.

Research output: Contribution to journalArticle

Hydrogen production
Catalysts
glycolic acid
Water
glycyl-glycyl-glycyl-glycine
31 Citations (Scopus)

Preparation of thermoresponsive anionic copolymer brush surfaces for separating basic biomolecules

Nagase, K., Kobayashi, J., Kikuchi, A., Akiyama, Y., Kanazawa, H., Annaka, M. & Okano, T., Jan 11 2010, In : Biomacromolecules. 11, 1, p. 215-223 9 p.

Research output: Contribution to journalArticle

Biomolecules
Brushes
Copolymers
Electrostatics
Atom transfer radical polymerization
33 Citations (Scopus)

Preparation of thermo-responsive polymer brushes on hydrophilic polymeric beads by surface-initiated atom transfer radical polymerization for a highly resolutive separation of peptides

Mizutani, A., Nagase, K., Kikuchi, A., Kanazawa, H., Akiyama, Y., Kobayashi, J., Annaka, M. & Okano, T., Sep 1 2010, In : Journal of Chromatography A. 1217, 38, p. 5978-5985 8 p.

Research output: Contribution to journalArticle

Methacrylates
Atom transfer radical polymerization
Brushes
Polymerization
Polymers

Research of hydrogel as a vitreous substitute

Hara, Y., Matsuura, T., Kodama, M. & Masahiko, A., Nov 1 2010, In : Folia Japonica de Ophthalmologica Clinica. 3, 11, p. 1071-1078 8 p.

Research output: Contribution to journalArticle

Vitreous Body
Hydrogel
History
Research
Silicone Oils
15 Citations (Scopus)

Soap-free emulsion polymerization of poly(ethylene glycol)block-poly(N- isopropylacrylamide): Elucidation of specific reaction fields for quasi-living polymerization by time-resolved SANS

Motokawa, R., Koizumi, S., Hashimoto, T., Annaka, M. & Nakahira, T., Jan 26 2010, In : Macromolecules. 43, 2, p. 752-764 13 p.

Research output: Contribution to journalArticle

Living polymerization
Soaps (detergents)
Emulsion polymerization
Neutron scattering
Polyethylene glycols
26 Citations (Scopus)

Stereoregulation of thermoresponsive polymer brushes by surface-initiated living radical polymerization and the effect of tacticity on surface wettability

Idota, N., Nagase, K., Tanaka, K., Okano, T. & Annaka, M., Dec 7 2010, In : Langmuir. 26, 23, p. 17781-17784 4 p.

Research output: Contribution to journalArticle

Living polymerization
brushes
Brushes
Free radical polymerization
wettability

Study on the microscopic structure and the dynamics of water for pig cornea in the process of desiccation

Annaka, M., Matsuura, T., Tsujinaka, H., Ikeda, H. & Hara, Y., Nov 1 2010, In : Folia Japonica de Ophthalmologica Clinica. 3, 11, p. 1173-1179 7 p.

Research output: Contribution to journalArticle

Desiccation
Cornea
Swine
Water
66 Citations (Scopus)

Thermo-responsive polymer brush-grafted porous polystyrene beads for all-aqueous chromatography

Mizutani, A., Nagase, K., Kikuchi, A., Kanazawa, H., Akiyama, Y., Kobayashi, J., Masahiko, A. & Okano, T., Jan 22 2010, In : Journal of Chromatography A. 1217, 4, p. 522-529 8 p.

Research output: Contribution to journalArticle

Polystyrenes
Brushes
Chromatography
Polymers
Atom transfer radical polymerization
44 Citations (Scopus)

Thermoresponsive polymer brush surfaces with hydrophobic groups for all-aqueous chromatography

Nagase, K., Kumazaki, M., Kanazawa, H., Kobayashi, J., Kikuci, A., Akiyama, Y., Masahiko, A. & Okano, T., Apr 28 2010, In : ACS Applied Materials and Interfaces. 2, 4, p. 1247-1253 7 p.

Research output: Contribution to journalArticle

Brushes
Chromatography
Polymers
Copolymers
Atom transfer radical polymerization

Volume phase transition of bovine vitreous body in vitro and determination of its dynamics

Matsuura, T., Masahiko, A., Kojima, M., Shimoyama, K. & Hara, Y., Nov 2010, In : Folia Japonica de Ophthalmologica Clinica. 3, 11, p. 1113-1119 7 p.

Research output: Contribution to journalArticle

Vitreous Body
Phase Transition
In Vitro Techniques
2009
13 Citations (Scopus)

Anisotropic swelling behavior of the cornea

Matsuura, T., Ikeda, H., Idota, N., Motokawa, R., Hara, Y. & Masahiko, A., Dec 24 2009, In : Journal of Physical Chemistry B. 113, 51, p. 16314-16322 9 p.

Research output: Contribution to journalArticle

cornea
collagens
Collagen
swelling
Cornea
2 Citations (Scopus)

Dynamic light scattering study of pig vitreous body

Matsuura, T., Idota, N., Hara, Y. & Masahiko, A., Dec 1 2009, Gels: Structures, Properties, and Functions. Tokita, M. & Katsuyoshi (eds.). p. 195-204 10 p. (Progress in Colloid and Polymer Science; vol. 136).

Research output: Chapter in Book/Report/Conference proceedingChapter

swine
Dynamic light scattering
Collagen
light scattering
collagens

Study on self-assembly of telechelic hydrophobically modified poly(N-isopropylacrylamide) in water

Fujimoto, T., Yoshimoto, E. & Masahiko, A., 2009, Gels: Structures, Properties, and Functions. Vol. 136. p. 77-86 10 p. (Progress in Colloid and Polymer Science; vol. 136).

Research output: Chapter in Book/Report/Conference proceedingChapter

Micelles
Self assembly
self assembly
micelles
Water
2008
62 Citations (Scopus)

Dimensions of a free linear polymer and polymer immobilized on silica nanoparticles of a zwitterionic polymer in aqueous solutions with various ionic strengths

Matsuda, Y., Kobayashi, M., Masahiko, A., Ishihara, K. & Takahara, A., Aug 19 2008, In : Langmuir. 24, 16, p. 8772-8778 7 p.

Research output: Contribution to journalArticle

Ionic strength
Silicon Dioxide
Polymers
light scattering
Silica
50 Citations (Scopus)

Influence of graft interface polarity on hydration/dehydration of grafted thermoresponsive polymer brushes and steroid separation using all-aqueous chromatography

Nagase, K., Kobayashi, J., Kikuchi, A., Akiyama, Y., Masahiko, A., Kanazawa, H. & Okano, T., Oct 7 2008, In : Langmuir. 24, 19, p. 10981-10987 7 p.

Research output: Contribution to journalArticle

Silanes
steroids
brushes
Brushes
chromatography
1 Citation (Scopus)

On the dimension of a hyperbranched polymer synthesized from a styrene derivative

Matsuda, Y., Kobayashi, M., Takahara, A., Tanaka, A., Hayashi, H., Masahiko, A. & Sato, T., Jun 17 2008, In : Polymer Journal. 40, 4, p. 375-378 4 p.

Research output: Contribution to journalArticle

Styrene
Polymers
Derivatives
Ketones
Photopolymerization
23 Citations (Scopus)

Salt effect on complex formation of neutral/polyelectrolyte block copolymers and oppositely charged surfactants

Matsuda, T. & Annaka, M., Jun 3 2008, In : Langmuir. 24, 11, p. 5707-5713 7 p.

Research output: Contribution to journalArticle

carbopol 940
Polyacrylates
Polyelectrolytes
block copolymers
Surface-Active Agents

Thermo-sensitive amphiphilic polymer as in-situ gelation biometerial for injectable vitreous substitute

Masahiko, A., Matsuura, T., Hara, Y., Yokoyama, Y. & Hamano, M., 2008, 8th World Biomaterials Congress 2008. Vol. 1. p. 434 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Gelation
Polymers
21 Citations (Scopus)

UCST-type cononsolvency behavior of poly(2-methacryloxyethyl phosphorylcholine) in the mixture of water and ethanol

Matsuda, Y., Kobayashi, M., Masahiko, A., Ishihara, K. & Takahara, A., Jul 17 2008, In : Polymer Journal. 40, 5, p. 479-483 5 p.

Research output: Contribution to journalArticle

Phosphorylcholine
Ethanol
Water
Hydrogen bonds
Size exclusion chromatography
2007
3 Citations (Scopus)

Dynamic light scattering study of salt effect on phase behavior of pig vitreous body and its microscopic implication

Masahiko, A., Okamoto, M., Matsuura, T., Yoshiakl Hará, N. & Sasaki, S., Jul 26 2007, In : Journal of Physical Chemistry B. 111, 29, p. 8411-8418 8 p.

Research output: Contribution to journalArticle

swine
Dynamic light scattering
Phase behavior
light scattering
collagens
45 Citations (Scopus)

Electrostatic self-assembly of neutral and polyelectrolyte block copolymers and oppositely charged surfactant

Masahiko, A., Morishita, K. & Okabe, S., Oct 11 2007, In : Journal of Physical Chemistry B. 111, 40, p. 11700-11707 8 p.

Research output: Contribution to journalArticle

Polyelectrolytes
block copolymers
Static Electricity
Surface-Active Agents
Self assembly
44 Citations (Scopus)

Real-time observation of coil-to-globule transition in thermosensitive poly(N-isopropylacrylamide) brushes by quartz crystal microbalance

Masahiko, A., Yahiro, C., Nagase, K., Kikuchi, A. & Okano, T., Sep 10 2007, In : polymer. 48, 19, p. 5713-5720 8 p.

Research output: Contribution to journalArticle

Quartz crystal microbalances
Brushes
Quartz
Free radical polymerization
Dehydration
1 Citation (Scopus)

Shape of α-crystallin analyzed by small-angle neutron scattering

Sugiyama, M., Fujii, N., Morimoto, Y., Otomo, T., Takata, S., Misawa, M., Masahiko, A., Itoh, K., Mori, K., Sato, T., Kurabayashi, S. & Fukunaga, T., Apr 1 2007, In : Journal of Applied Crystallography. 40, SUPPL. 1

Research output: Contribution to journalArticle

Small Angle Scattering
Crystallins
Neutrons
Neutron scattering
neutron scattering
2006

Aggregation states and swelling/shrinking properties of (inorganic nanofiber/poly(N-isopropylacrylamide)) hybrid hydrogel

Inoue, N., Otsuka, H., Wada, S. L., Masahiko, A. & Takahara, A., 2006, Polymer Preprints, Japan - 55th SPSJ Annual Meeting. 1 ed. Vol. 55. p. 1020 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nanofibers
Hydrogels
Swelling
Agglomeration
Aluminosilicates

Anisotropic frequency response of critical density fluctuation of NIPA gel under oscillation shear

Sugiyama, M., Vigild, M. E., Fukunaga, T., Itoh, K., Mori, K., Sato, T. & Masahiko, A., Nov 27 2006, In : Physica B: Condensed Matter. 385-386 I, p. 804-806 3 p.

Research output: Contribution to journalArticle

frequency response
Frequency response
Gels
gels
shear
1 Citation (Scopus)

Asymmetric swelling and self-assembly of poly(N-isopropyl-acrylamide)-block-poly(ethylene glycol) in water

Motokawa, R., Morishita, K., Koizumi, S., Yoshimoto, E. & Annaka, M., Nov 27 2006, In : Physica B: Condensed Matter. 385-386 I, p. 745-748 4 p.

Research output: Contribution to journalArticle

swelling
Self assembly
Polyethylene glycols
Swelling
self assembly
81 Citations (Scopus)

Biocompatibility of polyvinylalcohol gel as a vitreous substitute

Maruoka, S., Matsuura, T., Kawasaki, K., Okamoto, M., Yoshiaki, H., Kodama, M., Sugiyama, M. & Masahiko, A., Aug 1 2006, In : Current Eye Research. 31, 7-8, p. 599-606 8 p.

Research output: Contribution to journalArticle

Gels
Intraocular Pressure
Retina
Blood-Aqueous Barrier
Blood-Retinal Barrier
27 Citations (Scopus)

Dimension of poly(2-methacryloyloxyethyl phosphorylcholine) in aqueous solutions with various ionic strength

Matsuda, Y., Kobayashi, M., Masahiko, A., Ishihara, K. & Takahara, A., Nov 5 2006, In : Chemistry Letters. 35, 11, p. 1310-1311 2 p.

Research output: Contribution to journalArticle

Ionic strength
Dynamic light scattering
Polyelectrolytes
poly(2-methacryloyloxyethyl-phosphorylcholine)

Observation of collapse and swelling of thermosensitive poly(N-isopropylacrylamide) brashes grafted on SiO2

Yahiro, C., Masahiko, A., Kobayashi, M., Takahara, A., Kikuchi, A. & Okano, T., 2006, Polymer Preprints, Japan - 55th SPSJ Annual Meeting. 1 ed. Vol. 55. p. 1022 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Brushes
Swelling
Dehydration
Stretching
Quartz

Salt-induced volume phase transition of poly (N-isopropylacrylamide) gel

Masahiko, A., Morishita, K., Sugiyama, M. & Fukunaga, T., Apr 2006, In : KURRI Progress Report. p. 192 1 p.

Research output: Contribution to journalArticle

Gels
Salts
Phase transitions
poly-N-isopropylacrylamide

Self-assembly of colloidal complexes in diblock copolymer of Poly(N-isopropyl acrylamide)-b-poly(acrylic acid) and surfactant solutions

Morishita, K. & Masahiko, A., 2006, Polymer Preprints, Japan - 55th SPSJ Annual Meeting. 1 ed. Vol. 55. p. 1024 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Self assembly
Block copolymers
Acrylics
Surface active agents
Acids