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Effects of Φ-Stacking on the Absorption and Emission of Light by Conjugated Polymers and Oligomers

  • M. David Curtis (a1), Amy Koren (a1) and Jeff W. Kampf (a1)

Abstract

We have determined the crystal structures of regioregular HH-TT oligomers with a variety of side chains, including hydroxy-bearing side chains capable of H-bonding. The H-bonding orders the molecular packing into infinite 2-D sheets of Φ-stacks. In these H-bonded sheets, the Φ-stacks are insulated from each other by the aliphatic side chains and form one-dimensional “wires”. In contrast, the structures of similar oligomers that do not have H-bonded side-chains feature a structure in which neighboring Φ-stacks in are in contact (“shorted wires”). The effects of these differing molecular arrangements on the spectral properties and exciton splitting are discussed.

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Effects of Φ-Stacking on the Absorption and Emission of Light by Conjugated Polymers and Oligomers

  • M. David Curtis (a1), Amy Koren (a1) and Jeff W. Kampf (a1)

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