The Orientation and Photophysical Properties of Conjugated Polymers in Oriented Films | Zendy

He Benqiao | Zendy; Wu Changcheng | Zendy; Huang Yong | Zendy

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The Orientation and Photophysical Properties of Conjugated Polymers in Oriented Films

Author(s) -

He Benqiao,

Wu Changcheng,

Huang Yong

Publication year - 2007

Publication title -

macromolecular chemistry and physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.57

H-Index - 112

eISSN - 1521-3935

pISSN - 1022-1352

DOI - 10.1002/macp.200600477

Subject(s) - fluorenone , materials science , conjugated system , photoluminescence , dichroic glass , polymer , polymer chemistry , ultimate tensile strength , excimer , chemical engineering , photochemistry , composite material , fluorene , chemistry , optics , optoelectronics , fluorescence , physics , engineering

Highly oriented light‐emitting blend films containing poly(9,9‐dioctylfluorene) (PFO), PFO with one fluorenone unit (PFF), and ultrahigh‐molecular‐weight polyethylene (U‐PE) are prepared by using a tensile deformation technique. A high dichroic ratio of 36 in photoluminescence from the oriented film is obtained. The photophysical properties of the PFF/PFO blend are investigated in the blend films. In particular, the origin of the green band (‘g‐band’) that often undesirably appears from PFO used in air, is discussed in such a highly oriented circumstance. The experimental results powerfully demonstrate that the g‐band originates from the mono‐chain fluorenone moieties, rather than the fluorenone‐based excimer.

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