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Polymers 2013, 5(3), 937-953; doi:10.3390/polym5030937
Article

Supramolecular Functionalities Influence the Thermal Properties, Interactions and Conductivity Behavior of Poly(ethylene glycol)/LiAsF6 Blends

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Received: 6 May 2013; in revised form: 20 June 2013 / Accepted: 20 June 2013 / Published: 4 July 2013
(This article belongs to the Special Issue Supramolecular Chemistry and Self-Assembly)
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Abstract: In this study, we tethered terminal uracil groups onto short-chain poly(ethylene glycol) (PEG) to form the polymers, uracil (U)-PEG and U-PEG-U. Through AC impedance measurements, we found that the conductivities of these polymers increased upon increasing the content of the lithium salt, LiAsF6, until the Li-to-PEG ratio reached 1:4, with the conductivities of the LiAsF6/U-PEG blends being greater than those of the LiAsF6/U-PEG-U blends. The ionic conductivity of the LiAsF6/U-PEG system reached as high as 7.81 × 10−4 S/cm at 30 °C. Differential scanning calorimetry, wide-angle X-ray scattering, 7Li nuclear magnetic resonance spectroscopy and Fourier transform infrared spectroscopy revealed that the presence of the uracil groups in the solid state electrolytes had a critical role in tuning the glass transition temperatures and facilitating the transfer of Li+ ions.
Keywords: supramolecular structure; multiple hydrogen bonding; polymer electrolytes supramolecular structure; multiple hydrogen bonding; polymer electrolytes
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Wang, J.-H.; Cheng, C.-C.; Altukhov, O.; Chang, F.-C.; Kuo, S.-W. Supramolecular Functionalities Influence the Thermal Properties, Interactions and Conductivity Behavior of Poly(ethylene glycol)/LiAsF6 Blends. Polymers 2013, 5, 937-953.

AMA Style

Wang J-H, Cheng C-C, Altukhov O, Chang F-C, Kuo S-W. Supramolecular Functionalities Influence the Thermal Properties, Interactions and Conductivity Behavior of Poly(ethylene glycol)/LiAsF6 Blends. Polymers. 2013; 5(3):937-953.

Chicago/Turabian Style

Wang, Jui-Hsu; Cheng, Chih-Chia; Altukhov, Oleksii; Chang, Feng-Chih; Kuo, Shiao-Wei. 2013. "Supramolecular Functionalities Influence the Thermal Properties, Interactions and Conductivity Behavior of Poly(ethylene glycol)/LiAsF6 Blends." Polymers 5, no. 3: 937-953.


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