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3 October 2022 Solvent-driven helix-coil transitions in chiral conjugated polymers
Linda A. Peteanu, Megan Rice, Stephanie N. Kramer, Manami Kawakami, Kevin J. T. Noonan, Tomasz A. Kowalewski
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Proceedings Volume PC12199, Physical Chemistry of Semiconductor Materials and Interfaces XXI; PC121990B (2022) https://doi.org/10.1117/12.2635251
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
Helical conjugated polymers are of great interest for their potential as sources of circularly polarized luminescence and as magnetic field sensors. 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 circular dichroism, absorption, and fluorescence as well as single-particle microscopy is 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.
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Linda A. Peteanu, Megan Rice, Stephanie N. Kramer, Manami Kawakami, Kevin J. T. Noonan, and Tomasz A. Kowalewski "Solvent-driven helix-coil transitions in chiral conjugated polymers", Proc. SPIE PC12199, Physical Chemistry of Semiconductor Materials and Interfaces XXI, PC121990B (3 October 2022); https://doi.org/10.1117/12.2635251
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KEYWORDS
Polymers
Absorption
Luminescence
Dichroic materials
Dielectrics
Magnetic sensors
Microscopy
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