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• W4205177708 abstract "Abstract The secondary structure of a dissymmetric and chiral poly(diphenylacetylene) (PDPA) is elucidated by combining the data from NMR experiments (regioregular head to tail structure), Raman and IR studies ( E configuration of the polyene double bonds), and high‐resolution AFM images (helical pitch, packing angle and orientation of the external helix). As a result, an E‐transoidal polyene backbone describing three coaxial helices is obtained. Theoretical electronic circular dichroism (ECD) studies of the structure show a good correspondence between experimental and theoretical data and allow one to decipher that the first Cotton band is generated by the poly(diphenylacetylene) core and not only by the polyene backbone. The dynamic behavior of poly‐( S )‐ 2 is also demonstrated by a helix inversion effect produced by conformational changes at the pendant groups when annealed in solvents with different donor abilities. This phenomenon is accompanied by an inversion of the circular polarized luminescence of the PDPA (CPL switch)." @default.
• W4205177708 created "2022-01-26" @default.
• W4205177708 creator A5030433820 @default.
• W4205177708 creator A5035194333 @default.
• W4205177708 creator A5059281176 @default.
• W4205177708 creator A5068421087 @default.
• W4205177708 creator A5080758756 @default.
• W4205177708 date "2022-01-25" @default.
• W4205177708 modified "2023-10-17" @default.
• W4205177708 title "Dissymmetric Chiral Poly(diphenylacetylene)s: Secondary Structure Elucidation and Dynamic Luminescence" @default.
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