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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.
Original languageEnglish (US)
Title of host publicationPhysical Chemistry of Interfaces and Nanomaterials XV
PublisherSPIE-Intl Soc Optical Eng
ISBN (Print)9781510602373
DOIs
StatePublished - Sep 27 2016

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