Folded H-Stacking Polymers by Conformational Control with 2-Substituted Trimethylene Tethers
2010
Oligomers and polymers of type [−CH2CHRCH2−(π)−]n comprising aryl units tethered by 2-substituted trimethylene were found to exist as a folding H-stacking structure in polar solvents such as CH3CN and in film, which was evidenced by their blue-shifted UV absorption compared to that of the parent aryl compounds, and exhibited predominantly excimer-like emission. In addition, annealing of the films resulted in a unique layered structure, which may arise from the folded polymer form.
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