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Electrochromism in Electropolymerized Films of Pyrene-Triphenylamine Derivatives.

ABSTRACT: Two star-shaped multi-triphenylamine derivatives 1 and 2 were prepared, where 2 has an additional phenyl unit between a pyrene core and surrounding triphenylamine units. The oxidative electropolymerization of 1 and 2 occurred smoothly to give thin films of polymers P1 and P2. The electrochemistry and spectroelectrochemistry of P1 and P2 were examined, showing two-step absorption spectral changes in the near-infrared region. The electrochromic properties, including contrast ratio, response time, and cyclic stability of P1 and P2 were investigated and compared. Thin film of P2 displays slightly better electrochromic performance than P1, with a contrast ratio of 45% at 1475 nm being achieved.

SUBMITTER: Sun TG

PROVIDER: S-EPMC6402011 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature

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Electrochromism in Electropolymerized Films of Pyrene-Triphenylamine Derivatives.

Sun Tian-Ge TG Li Zhi-Juan ZJ Shao Jiang-Yang JY Zhong Yu-Wu YW

Polymers 20190105 1

Two star-shaped multi-triphenylamine derivatives 1 and 2 were prepared, where 2 has an additional phenyl unit between a pyrene core and surrounding triphenylamine units. The oxidative electropolymerization of 1 and 2 occurred smoothly to give thin films of polymers P1 and P2. The electrochemistry and spectroelectrochemistry of P1 and P2 were examined, showing two-step absorption spectral changes in the near-infrared region. The elect ...[more]

PMID: 30960057

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