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Chain-Length Dependence of the Electrochemical Properties of Conjugated Oligofluorenes

✍ Scribed by Chunyan Chi; Gerhard Wegner

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 136 KB
Volume: 26
Category: Article
ISSN: 1022-1336
DOI: 10.1002/marc.200500437

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✦ Synopsis

Abstract

Summary: Electrochemical properties of monodisperse oligofluorenes (OF**n**, n = 2 to 7) and corresponding polyfluorene were studied by cyclic and differential pulse voltammetry. In combination with data of UV‐vis absorption spectra, a series of linear relations such as the band gap, the oxidation potential, the ionization potential, and the electron affinity with the reciprocal number of the fluorene units (1/n) were deduced. When a chain length of ca. 14 repeat units is reached, a stable structure of about one positive charge per 3.5 repeat units is obtained.
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