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Electrical conductivity of chitosan/PCL hosting network for CdSe quantum dots

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Abstract

Insulating polymer blend of chitosan/poly(ε-caprolactone), Ch/PCL 75/25Wt% that owe fast ionic motion facilitating ionic conduction were successfully synthesized via traditionally solution casting rote. In addition to another samples containing gradually increasing amounts of highly efficient florescent semiconducting CdSe quantum dots embedded within prepared thin films of such polymeric matrices. Electronic transport characteristics of synthesized samples were studied through ac conductivity measurements. The dielectric constant, ε′, was noticed to be temperature independent resulting from decreasing charge carriers along with their motilities. Obtained data discloses of hopping mechanism governs charge carriers transport and their relaxation. It was observed also that the loss tangent, tan δ, is a frequency-dependent parameter and Nyquist plots at 20 °C represent semicircles centered below the X-axis pointing to a wide range dielectric relaxation.

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Authors and Affiliations

  1. Spectroscopy Department, Physics Division, National Research Center, 33 Elbehouth St, Cairo, 12311, Egypt

    A. M. Abdelghany

  2. Basic and Applied Science Department, Horus University, Costal-Road, New-Damietta, Egypt

    A. M. Abdelghany

  3. Physics Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt

    M. S. Meikhail & W. M. Awad

Authors
  1. A. M. Abdelghany
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  2. M. S. Meikhail
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  3. W. M. Awad
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Correspondence to A. M. Abdelghany.

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Abdelghany, A.M., Meikhail, M.S. & Awad, W.M. Electrical conductivity of chitosan/PCL hosting network for CdSe quantum dots. Polym. Bull. 79, 4381–4393 (2022). https://doi.org/10.1007/s00289-021-03715-9

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  • DOI: https://doi.org/10.1007/s00289-021-03715-9

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