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Aggregation and chiroptical behavior of a high molecular weight chirally substituted dialkylpoly(p‐phenyleneethynylene)
Authors:Rainer Fiesel  Carrie E. Halkyard  Mary E. Rampey  Lioba Kloppenburg  Shannon L. Studer‐Martinez  Ullrich Scherf  Uwe H. F. Bunz
Abstract: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.
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