Conjugated Polymers Featuring Oxacyclophane-Scaffolded [pi]-Stacking Interactions

An oxacyclophane framework is modified to include π-conjugated segments positioned so as to allow an optimized face-to-face π-stacking interaction between them. This unique architecture is first employed for the preparation of model compounds with defined interaction between two small molecular orga...

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Bibliographic Details
Published in:Macromolecular chemistry and physics 2014-02, Vol.215 (4), p.351
Main Authors: Mangalum, Anshuman, Morgan, Brad P, Tennyson, Andrew G, Smith, Rhett C
Format: Article
Language:English
Subjects:
Polymers
R&D
Research & development
Online Access:Get full text
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Summary:An oxacyclophane framework is modified to include π-conjugated segments positioned so as to allow an optimized face-to-face π-stacking interaction between them. This unique architecture is first employed for the preparation of model compounds with defined interaction between two small molecular organic chromophores. The interaction allows facile through-space energy transfer between the chromophores when they are held in the appropriate geometry. The oxacyclophane is thus employed in a polymer with consecutive short stretches of phenylene ethynylene such that polymer chain conjugation requires through-space interaction between segments rather than the through-bond π-conjugation that typifies traditional conjugated polymers. The extent of the through-space interactions along the polymer backbone is explored through photophysical measurements, calculations, X-ray diffraction, and comparison with a variety of model and control materials.
ISSN:1022-1352
1521-3935
DOI:10.1002/macp.201300630