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    Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

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    Type
    Article
    Authors
    Habuchi, Satoshi cc
    Yamamoto, Takuya
    Tezuka, Yasuyuki
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Bioscience Program
    Date
    2016-09-26
    Permanent link to this record
    http://hdl.handle.net/10754/621130
    
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    Abstract
    We demonstrate a method for the synthesis of cyclic polymers and a protocol for characterizing their diffusive motion in a melt state at the single molecule level. An electrostatic self-assembly and covalent fixation (ESA-CF) process is used for the synthesis of the cyclic poly(tetrahydrofuran) (poly(THF)). The diffusive motion of individual cyclic polymer chains in a melt state is visualized using single molecule fluorescence imaging by incorporating a fluorophore unit in the cyclic chains. The diffusive motion of the chains is quantitatively characterized by means of a combination of mean-squared displacement (MSD) analysis and a cumulative distribution function (CDF) analysis. The cyclic polymer exhibits multiple-mode diffusion which is distinct from its linear counterpart. The results demonstrate that the diffusional heterogeneity of polymers that is often hidden behind ensemble averaging can be revealed by the efficient synthesis of the cyclic polymers using the ESA-CF process and the quantitative analysis of the diffusive motion at the single molecule level using the MSD and CDF analyses.
    Citation
    Habuchi S, Yamamoto T, Tezuka Y (2016) Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level. Journal of Visualized Experiments. Available: http://dx.doi.org/10.3791/54503.
    Sponsors
    This work was supported by a Grant-in-Aid for Scientific Research No. 22750122 (S.H.), No. 26288099 (T.Y.), and No. 23350050 (Y.T.) of the Japan Society for the Promotion of Science. S.H. is grateful for The Kurata Memorial Hitachi Science and Technology Foundation. The research reported in this publication was supported by the King Abdullah University of Science and Technology (S.H.).
    Publisher
    MyJove Corporation
    Journal
    Journal of Visualized Experiments
    DOI
    10.3791/54503
    Additional Links
    http://www.jove.com/video/54503/synthesis-cyclic-polymers-characterization-their-diffusive-motion
    http://www.jove.com/video/54503/
    ae974a485f413a2113503eed53cd6c53
    10.3791/54503
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Bioscience Program

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