Preparation of Patterned and Multilayer Thin Films for Organic Electronics via Oxygen-Tolerant SI-PET-RAFT

Jade Poisson, Alexander M. Polgar, Michele Fromel, Christian W. Pester, Zachary M. Hudson

Research output: Contribution to journalArticlepeer-review

Abstract

An oxygen-tolerant approach is described for preparing surface-tethered polymer films of organic semiconductors directly from electrode substrates using polymer brush photolithography. A photoinduced electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) approach was used to prepare multiblock polymer architectures with the structures of multi-layer organic light-emitting diodes (OLEDs), including electron-transport, emissive, and hole-transport layers. The preparation of thermally activated delayed fluorescence (TADF) and thermally assisted fluorescence (TAF) trilayer OLED architectures are described. By using direct photomasking as well as a digital micromirror device, we also show that the surface-initiated (SI)-PET-RAFT approach allows for enhanced control over layer thickness, and spatial resolution in polymer brush patterning at low cost.

Original languageEnglish (US)
Pages (from-to)19988-19996
Number of pages9
JournalAngewandte Chemie - International Edition
Volume60
Issue number36
DOIs
StatePublished - Sep 1 2021

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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