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- W4324018052 abstract "The synthesis and processing of π-rich polymers found in novel electronics and textiles is difficult because chain stiffness leads to low solubility and high thermal transitions. The incorporation of shape-shifting molecular cages into π-rich backbone provides an ensemble of structural kinks to modulate chain architecture via a self-contained library of valence isomers. In this work, we report the synthesis and characterization of (bullvalene-co-phenylene)s that feature smaller persistence lengths than a prototypical rigid rod polymer, poly(p-phenylene). By varying the amount of bullvalene incorporation within a poly(p-phenylene) chain (0-50 %), we can tune thermal properties and solution-state conformation. These features are caused by stochastic bullvalene isomers within the polymer backbone that result in kinked architectures. Synthetically, bullvalene incorporation offers a facile method to decrease structural rigidity within π-rich materials without concomitant crystallization. VT NMR experiments confirm that these materials remain dynamic in solution, offering the opportunity for future stimuli-responsive applications." @default.
- W4324018052 created "2023-03-14" @default.
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- W4324018052 date "2023-04-03" @default.
- W4324018052 modified "2023-09-26" @default.
- W4324018052 title "Stochastic Bullvalene Architecture Modulates Structural Rigidity in π‐Rich Macromolecules" @default.
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- W4324018052 doi "https://doi.org/10.1002/anie.202301695" @default.
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