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1 October 2023 Solvent-driven helix-coil transitions in emissive chiral conjugated polymers
Linda A. Peteanu, Megan A. Rice, Erin T. Smith, Soren Westrey, Yuyang Shang, Seth Goldberg, Manami Kawakami, Kevin J. T. Noonan, Tomasz Kowalewski
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Proceedings Volume PC12659, Organic and Hybrid Light Emitting Materials and Devices XXVII; PC126590B (2023) https://doi.org/10.1117/12.2677108
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States
Abstract
Helical conjugated polymers are of great interest for their potential as sources of circularly polarized luminescence for numerous electro-optical device applications including display technologies. Due to their relatively strong absorption cross sections and high emissivity in the visible wavelength range, these materials permit a detailed investigation of how the transition between helical and random coil forms are driven by polymer structural features such as chain length and chemical defects as well as environmental properties such as solvent and temperature. Bulk methods such as temperature dependent absorption, emission, and circular dichroism as well as single-particle microscopy are used to probe the helix-to-coil phase transition in a model chiral polyfuran and to determine whether the conformations favored in solution are retained in the solid state. In addition, the transient dynamics and the effects of chemical doping on the electronic properties of the helix and coiled forms are explored.
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Linda A. Peteanu, Megan A. Rice, Erin T. Smith, Soren Westrey, Yuyang Shang, Seth Goldberg, Manami Kawakami, Kevin J. T. Noonan, and Tomasz Kowalewski "Solvent-driven helix-coil transitions in emissive chiral conjugated polymers", Proc. SPIE PC12659, Organic and Hybrid Light Emitting Materials and Devices XXVII, PC126590B (1 October 2023); https://doi.org/10.1117/12.2677108
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KEYWORDS
Polymers
Emissivity
Electrical properties
Electro optical modeling
Electro optics
Light absorption
Luminescence
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