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Aggregation and chiroptical behavior of a high molecular weight chirally substituted dialkylpoly( p‐ phenyleneethynylene)
Author(s) -
Fiesel Rainer,
Halkyard Carrie E.,
Rampey Mary E.,
Kloppenburg Lioba,
StuderMartinez Shan L.,
Scherf Ullrich,
Bunz Uwe H. F.
Publication year - 1999
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/(sici)1521-3927(19990301)20:3<107::aid-marc107>3.0.co;2-a
Subject(s) - chemistry , materials science , stereochemistry
The solvent and temperature dependent aggregation of high molecular weight bis[ S ‐(+)‐3,7‐dimethyloctyl)] substituted poly( p ‐phenyleneethynylene) (PPE, 2 ) was examined by absorption, emission and circular dichroism spectroscopy. All herein employed methods strongly support the view that 2 forms ordered aggregates in the solid state and in solvent mixtures. This is the first case in which a chiral high molecular weight PPE displays its aggregation by both optical and chiroptical methods.