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The interaction of poly ( p ‐phenylenevinylene) with air
Author(s) -
Xing Kezhao,
Fahlman Mats,
Lögdlund Michael,
dos Santos Doni A.,
Parenté Vincent,
Lazzaroni Roberto,
Brédas JeanLuc,
Gymer Richard W.,
Salaneck William R.
Publication year - 1996
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19960081204
Subject(s) - materials science , polymer , absorption (acoustics) , optoelectronics , photochemistry , chemical engineering , composite material , engineering , chemistry
The exposure of poly( p ‐phenylenevinylene), PPV, to air affects its performance in polymer‐based light‐emitting devices. An investigation is described in which exposure to air is demonstrated to give rise to reversible affects associated with the absorption of water vapor, leading to determinal changes in the outer electronic structure (see also the cover of this issue). In particular the resulting increase in torsion angle is shown to lead to a reduction in conjugation. A method of preparing clean PPV films is proposed.