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Ladder Polymers with a Heteroacene Skeleton
Author(s) -
Freund Torsten,
Scherf Ullrich,
Müllen Klaus
Publication year - 1995
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199424241
Subject(s) - dication , counterion , polymer , solubility , ionic bonding , dehydration , chemistry , polymer chemistry , materials science , ion , organic chemistry , biochemistry
High molecular mass, uniform structure, and complete solubility characterize the novel ladder polymers 1 . The formation of dication 2 from a model analogue of 1 by oxidation with 2,3‐dichloro‐5,6‐dicyanobenzoquinone (DDQ) and subsequent dehydration with trifluoromethanesulfonic acid reveals that 1 is a potent precursor for the preparation of heteroanalogous, ionic poly[ n ]acenes. R 1 = p ‐C 6 H 4 ‐ n ‐C 10 H 21 , R 2 = p ‐C 6 H 4 rBu; counterion CF 3 SO 3 − .