Crystallization-Arrested Viscoelastic Phase Separation in Semiconducting Polymer Gels

  title={Crystallization-Arrested Viscoelastic Phase Separation in Semiconducting Polymer Gels},
  author={Jing He and Xiaoqing Kong and Yuhao Wang and Michael Delaney and Dilhan M. Kalyon and Stephanie S. Lee},
  journal={ACS Applied Polymer Materials},
Through a combination of rheological characterization and temperature-variable imaging methods, a novel gelation pathway in dilute solutions of a semiconducting polymer to achieve interconnected, crystalline networks with hierarchical porosity is reported. Upon rapid cooling, solutions of regioregular poly(3-hexylthiophene) (RR-P3HT) in ortho-dichlorobenzene formed thermoreversible gels. Temperature-variable confocal microscopy revealed cooling-induced structural rearrangement to progress… 
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