Premium
Striking selectivity of anion incorporation into polypyrrole by competitive doping: perchlorate versus hexafluorophosphate
Author(s) -
Walton D. J.,
Hall C. E.,
Mure J. M.,
Pyle A.,
Thomas C.,
Viney I. V. F.
Publication year - 1994
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1994.220050920
Subject(s) - hexafluorophosphate , polypyrrole , perchlorate , selectivity , dopant , electrolyte , electrolysis , materials science , inorganic chemistry , polymer , doping , polymer chemistry , ion , organic chemistry , chemistry , catalysis , polymerization , electrode , ionic liquid , optoelectronics
In the electro‐oxidative preparation of polypyrrole films from electrolyte media containing both perchlorate and hexafluorophosphate anions a striking selectivity towards ClO 4 was observed, with a three‐fold preference for this anion in films from aqueous medium and a greater than ten‐fold preference from MeCN. This result is of benefit towards the production of polypyrroles containing complex functionalized dopant anions, since the presence of PF 6 to bolster electrolysis parameters will less readily carry over into the final polymer. PF 6 is particularly useful for this purpose in MeCN, where ClO 4 is inappropriate, being itself too readily incorporated into the polymer from this solvent system.