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Conducting Polymers with Micro or Nanometer Structure by Meixiang Wan PDF

By Meixiang Wan

ISBN-10: 354069322X

ISBN-13: 9783540693222

ISBN-10: 3540693238

ISBN-13: 9783540693239

Conducting Polymers with Micro or Nanometer Structure describes a subject found via 3 winners of the Nobel Prize in Chemistry in 2000: Alan J. Heeger, college of California at Santa Barbara, Alan G. MacDiarmid on the collage of Pennsylvania, and Hideki Shirakawa on the collage of Tsukuba. considering that then, the original homes of accomplishing polymers have ended in promising purposes in useful fabrics and applied sciences. The ebook first in brief summarizes the most innovations of engaging in polymers sooner than introducing micro/nanostructured engaging in polymers facing their synthesis, structural characterizations, formation mechanisms, actual and chemical homes, and capability functions in nanomaterials and nanotechnology. The publication is meant for researchers within the similar fields of chemistry, physics, fabrics, nanomaterials and nanodevices. Meixiang Wan is a professor on the Institute of Chemistry, chinese language Academy of Sciences, Beijing.

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Extra resources for Conducting Polymers with Micro or Nanometer Structure

Example text

E. its conducting state) is prepared by oxidative polymerization of aniline in a strong acidic medium [4,5, 18a]. g. g. 0 mol/L HCl at room temperature or in an ice/water bath (0  5ć) and the polymerization is continued for pre-desired time. 5 mol/L HCl solution, then with methanol until colorless, and finally diethyl ether until color-less. It is finally dried at ca. 60  70ć in air for ca. 24 h. The product so obtained is the emeraldine salt form with conductivity of ~ 10 S/cm, depending preparation conditions.

A small amount reagent is required in an electrochemical method. On the contrary, a large amount of reactive chemical reagents in the chemical method is required, which could cause environment pollution. Ĺ The quantum of the product prepared by electrochemical method is limited by size of the work electrode; however, large amount of product is easily synthesized by a chemical method. It has been demonstrated that the electrochemical polymerization of aniline is as a bimolecular reaction involving a radical cation intermediate and a two-electron-transfer process for each step of polymerization [36].

E. 5 Modified molecular structure of the protonated PANI by adding protonation parameter (x) [15] secondary aromatic amine (1300 cm1), the aromatic CüH in-plane bending (1141 cm1), and the out-of-plane deformation of CüH in the 1,4-disubstituted benzene ring (821 cm1 and 505 cm1), and the aromatic CüH in-plane band at 1141 cm1 related to proton doping PANI are observed [17]. e. e. g. NaOH or ammonium), consequently, which can be re-doping by acids to form the emeraldine salt form, showing a reversible protonation/de-protonation process [7b].

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Conducting Polymers with Micro or Nanometer Structure by Meixiang Wan

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