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Synthesis and Properties of Oligo‐/Polymers Based on a “Flexible” Swivel‐Cruciform Structure
Author(s) -
Nehls Benjamin S.,
Galbrecht Frank,
Bilge Askin,
Scherf Ullrich,
Farrell Tony
Publication year - 2006
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.200690099
Subject(s) - cruciform , crystallization , materials science , alkoxy group , thiophene , polymer , amorphous solid , aryl , polymer chemistry , crystallography , chemical engineering , chemistry , composite material , organic chemistry , alkyl , engineering
We have introduced the concept of the so‐called swivel type cruciforms as a highly flexible tool to tune the molecular properties from amorphous to highly crystalline features. Simple alkoxy substituted binaphthyl building blocks have been introduced randomly into poly(9,9‐dioctylfluorene) (PFO) thereby suppressing the formation of side‐chain crystallization. On the other hand the all aryl penta‐thiophene based cruciform exhibited strong π–π interaction between the arms and gave one of the highest values reported to date for wet processed organic field effect transistors (OFETs) utilising oligothiophenes.