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Spectroscopic characterization of the conversion of poly(p‐phenylene‐vinylene) precursor by ion irradiation
Author(s) -
Davenas J.,
Massardier V.,
Tran V. H.,
Nguyen T. P.
Publication year - 1997
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19971190126
Subject(s) - irradiation , conductivity , materials science , chlorine , doping , pyrolysis , ion , sulfur , photochemistry , carbon fibers , chemistry , organic chemistry , optoelectronics , physics , nuclear physics , metallurgy , composite material , composite number
Different spectroscopic techniques show that poly(p‐phenylene vinylene) films can be derived from a sulphonium precursor by irradiation with ion beams at energies of the order of 100 keV. The comparison with the pyrolysis conversion shows less chlorine and sulfur residues in the irradiated thickness, whereas some ketone structures are evidenced. The formation of nanometric scale carbon clusters induced by the irradiation degradation of PPV is however indicated by UV spectrophotometry, leading to bandgap narrowing and increase of the conductivity. The irradiation with doping species allows the conversion and doping of PPV films in a single stage. The induced conductivity is limited by the formation of complexes with chlorine residues through a gettering process.