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Di‐Channel Polyfluorene Containing Spiro‐Bridged Oxadiazole Branches
Author(s) -
Zhu Rui,
Wen GuiAn,
Feng JiaChun,
Chen RunFeng,
Zhao Lei,
Yao HePing,
Fan QuLi,
Wei Wei,
Peng Bo,
Huang Wei
Publication year - 2005
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200500412
Subject(s) - polyfluorene , materials science , schematic , oxadiazole , polymer , copolymer , steric effects , homo/lumo , polymer chemistry , thermal stability , channel (broadcasting) , photochemistry , chemistry , molecule , stereochemistry , organic chemistry , composite material , computer science , telecommunications , electronic engineering , engineering
Summary: A p – n di‐channel copolymer based on polyfluorene (PF) has been designed and prepared. Branches containing oxadiazole units are attached to the PF backbone through the spiro‐structure and act as channels to improve the electron affinity; these branches form a steric ‘di‐channel’ framework with the polymer backbone. The polymer possesses excellent thermal stability. The lowest unoccupied molecular orbital energy level of the polymer is significantly altered in comparison with poly(9,9‐dioctylfluorene‐2,7‐diyl).Schematic of the di‐channel polyfluorene synthesized here and the mechanism of energy transfer through the structure.