Effect of molecular weight on the vibronic structure of a diketopyrrolopyrrole polymer

Sophia C. Hayes; Galatia Pieridou; Michelle Vezie; Sheridan Few; Hugo Bronstein; Iain Meager; Iain McCulloch; Jenny Nelson

doi:10.1117/12.2238123

26 September 2016 Effect of molecular weight on the vibronic structure of a diketopyrrolopyrrole polymer

Sophia C. Hayes, Galatia Pieridou, Michelle Vezie, Sheridan Few, Hugo Bronstein, Iain Meager, Iain McCulloch, Jenny Nelson

Author Affiliations +

Proceedings Volume 9923, Physical Chemistry of Interfaces and Nanomaterials XV; 99230N (2016) https://doi.org/10.1117/12.2238123
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

Abstract

Resonance Raman Spectroscopy (RRS) is employed in this study to examine the influence of molecular weight on the optical response of a diketopyrrolopyrrole polymer (DPP-TT-T) in solution. The vibronic structure observed for the ground state absorption of this polymer is found to vary with molecular weight and solvent. Resonance Raman Intensity Analysis (RRIA) revealed that the absorption spectra can be described by at least two dipole-allowed transitions and the vibronic structure variation is due to differing contributions from linear and curved segments of the polymer.

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Sophia C. Hayes, Galatia Pieridou, Michelle Vezie, Sheridan Few, Hugo Bronstein, Iain Meager, Iain McCulloch, and Jenny Nelson "Effect of molecular weight on the vibronic structure of a diketopyrrolopyrrole polymer", Proc. SPIE 9923, Physical Chemistry of Interfaces and Nanomaterials XV, 99230N (26 September 2016); https://doi.org/10.1117/12.2238123

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