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

19 Citations (Scopus)

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
Article number1704069
JournalAdvanced Functional Materials
Volume27
Issue number43
DOIs
Publication statusPublished - 17 Nov 2017
Externally publishedYes

Keywords

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

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