Premium
Chain‐Length Dependence of the Electrochemical Properties of Conjugated Oligofluorenes
Author(s) -
Chi Chunyan,
Wegner Gerhard
Publication year - 2005
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200500437
Subject(s) - polyfluorene , fluorene , cyclic voltammetry , differential pulse voltammetry , materials science , electrochemistry , electrochromism , conjugated system , absorption (acoustics) , absorption spectroscopy , analytical chemistry (journal) , photochemistry , chemistry , optics , physics , organic chemistry , polymer , electrode , composite material
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.