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Electrochemical polymerization of phenanthrene in mixed electrolytes of boron trifluoride diethyl etherate and concentrated sulfuric acid
Author(s) -
Zhou WeiQiang,
Peng HuaPing,
Xu JingKun,
Xia HongYing,
Pu ShouZhi
Publication year - 2008
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2321
Subject(s) - boron trifluoride , chemistry , sulfuric acid , phenanthrene , fourier transform infrared spectroscopy , polymerization , saturated calomel electrode , electrochemistry , nuclear chemistry , acetonitrile , cyclic voltammetry , inorganic chemistry , polymer chemistry , polymer , organic chemistry , electrode , working electrode , chemical engineering , engineering , catalysis
A novel high‐quality polyphenanthrene (PPH) film with electrical conductivity of 10 −1 S cm −1 was synthesized electrochemically by direct anodic oxidation of phenanthrene in boron trifluoride diethyl etherate containing 10% concentrated sulfuric acid (v/v). The oxidation onset potential of phenanthrene in this medium was measured to be only 0.91 V versus saturated calomel electrode (SCE), which was lower than that determined in acetonitrile + 0.1 mol L −1 Bu 4 NBF 4 (1.56 V versus SCE). As‐formed PPH films from this medium showed good electrochemical behavior and stability. De‐doped PPH films were thoroughly soluble in dimethylsulfoxide or CHCl 3 . The structure and morphology of the polymer were investigated using UV‐visible and Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy. FTIR and 1 H NMR spectra showed that the PPH was grown via the coupling of the monomer mainly at the C 4 , C 5 , C 9 and C 10 positions. Fluorescence spectral studies indicated that PPH was a blue‐green light emitter. Copyright © 2007 Society of Chemical Industry