Effect of Alkyl Chain Branching Point on 3D Crystallinity in High N-Type Mobility Indolonaphthyridine Polymers

Kealan J. Fallon, Annikki Santala, Nilushi Wijeyasinghe, Eric F. Manley, Niall Goodeal, Anastasia Leventis, David M.E. Freeman, Mohammed Al-Hashimi, Lin X. Chen, Tobin J. Marks, Thomas D. Anthopoulos, Hugo Bronstein*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Herein, this study investigates the impact of branching-point-extended alkyl chains on the charge transport properties of three ultrahigh n-type mobility conjugated polymers. Using grazing incidence wide-angle X-ray scattering, analysis of the crystallinity of the series shows that while π–π interactions are increased for all three polymers as expected, the impact of the side-chain engineering on polymer backbone crystallinity is unique to each polymer and correlates to the observed changes in charge transport. With the three polymers exhibiting n-type mobilities between 0.63 and 1.04 cm2 V−1 s−1, these results ratify that the indolonaphthyridine building block has an unprecedented intrinsic ability to furnish high-performance n-type organic semiconductors.

Original languageEnglish (US)
Article number1704069
JournalAdvanced Functional Materials
Volume27
Issue number43
DOIs
StatePublished - Nov 17 2017

Keywords

  • Organic Field-Effect Transistors (OFETs)
  • conjugated polymers
  • electron transport
  • indolonapthryidine
  • polymer crystallinity

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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