2013 Fiscal Year Final Research Report
Investigation of nanoscale spatial heterogeneity in polymeric materials by using 3D single-molecule tracking techniques
Project/Area Number |
23681023
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Research Category |
Grant-in-Aid for Young Scientists (A)
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Allocation Type | Single-year Grants |
Research Field |
Nanomaterials/Nanobioscience
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Research Institution | Osaka University |
Principal Investigator |
ITO Syoji 大阪大学, 基礎工学研究科, 助教 (10372632)
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Project Period (FY) |
2011-04-01 – 2014-03-31
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Keywords | 1分子科学 / ナノ反応ダイナミクス計測 |
Research Abstract |
In this project, we have focused on constructing single-molecule imaging apparatuses with three-dimensional (3D) resolution for the investigation of spatial heterogeneity at the molecular level in polymeric materials. To achieve 3D localization, two approaches were employed. The first one is so-called the astigmatism imaging method, in which a cylindrical lens was inserted into the imaging system to modify the shape of the fluorescent image of a single molecule depending on Z-position. The second approach is a structured illumination with a periodic intensity modulation along the Z-axis due to the interference of two laser beams. These imaging apparatuses provided the 3D resolution of several tens of nanometers. By using the 3D super-resolution techniques, we have clarified the mechanism of anomalous diffusion of guest molecules in polymer films. In addition, we have also succeeded in the visualization of spatial heterogeneity in polymeric materials.
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Research Products
(47 results)
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[Journal Article] Constraint-induced structural deformation of planarized triphenylboranes in the excited state2014
Author(s)
Tomokatsu Kushida, Cristopher Camacho, Ayumi Shuto, Stephan Irle, Masayasu Muramatsu, Tetsuro Katayama, Syoji Ito, Yutaka Nagasawa, Hiroshi Miyasaka, Eri Sakuda, Noboru Kitamura, Zhiguo Zhou, Atsushi Wakamiya, Shigehiro Yamaguchi
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Journal Title
Chem. Sci.
Volume: 5
Pages: 1296-1304
DOI
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[Journal Article] Selective Optical Assembly of Highly Uniform Nanoparticles by Doughnut-Shaped Beams2013
Author(s)
Syoji Ito, Hiroaki Yamauchi, Shimpei Hidaka, Mamoru Tamura, Hironori Hattori, Taichi Hamada, Keisuke Nishida, Shiho Tokonami,Tamitake Itoh, Hiroshi Miyasaka, and Takuya Iida
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Journal Title
Scientific Report
Volume: 3
Pages: 3047
DOI
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[Journal Article] Metallic-Nanostructure-Enhanced Optical Trapping of Flexible Polymer Chains in Aqueous Solution as Revealed by Confocal Fluorescence Microspectroscopy2012
Author(s)
Mariko Toshimitsu, Yuriko Matsumura, Tatsuya Shoji, Noboru Kitamura, Mai Takase, Kei Murakoashi, Hiroaki Yamauchi, Syoji Ito, Hiroshi Miyasaka, Yoshihiko Mizumoto, Hajime Ishihara, and Yasuyuki Tsuboi
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Journal Title
J. Phys. Chem. C
Volume: 116(dx.doi.org/10.1021/jp305247a)
Pages: 14610−14618
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[Presentation] 軸対称ベクトルビームによるプラズモニックナノ粒子の選択的光パターニング2014
Author(s)
伊都将司,山内宏昭,田村守,日高慎平,服部祐徳,濱田大地,西田敬亮,床波志保,伊藤民武,宮坂博,飯田琢也
Place of Presentation
青山学院大学相模原キャンパス
Year and Date
2014-03-17
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