Effect of synthesis temperature and alkoxy side chain length on molecular structure and photoelectrochemical properties of terthiophenes

Santos, Marcos José Leite; Girotto, Emerson M.

doi:10.1590/s0103-50532009000200006

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Electrochemical Characterization1

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“…1). 15,[49][50][51][52] The nanocomposite presents higher current and charge densities than PPy-IC (ca. 19% increase in charge density), synthesized under the same conditions.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Enhanced electrochromic properties of a polypyrrole–indigo carmine–gold nanoparticles nanocomposite

Loguercio

Alves

Thesing

et al. 2015

Phys. Chem. Chem. Phys.

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An indigo carmine doped polypyrrole embedded with gold nanoparticles nanocomposite (PPy-IC-Aunanop) was synthesized by in situ electrochemical polymerization of polypyrrole in the presence of HAuCl4. The nanocomposite was characterized by in situ spectroelectrochemical experiments to study the effect of embedded gold nanoparticles on the electrochromic properties of the material. The results show the formation of a nanocomposite presenting enhanced electrochromic and optical properties, higher electroactivity and 10% lower band-gap energies. The PPy-IC-Aunanop presented a two-fold increase in optical contrast when compared to PPy-IC, in addition to better optical stability.

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“…1). 15,[49][50][51][52] The nanocomposite presents higher current and charge densities than PPy-IC (ca. 19% increase in charge density), synthesized under the same conditions.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%