期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 36, 页码 19988-19996出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202107830
关键词
block copolymers; FRET; photopatterning; polymer brushes; SI-PET-RAFT
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Research Chairs program
- Pennsylvania State University
An oxygen-tolerant approach has been introduced for preparing surface-tethered polymer films of organic semiconductors directly from electrode substrates. The PET-RAFT method was used to prepare multiblock polymer architectures resembling multi-layer OLEDs, and the preparation of TADF and TAF trilayer OLED architectures was described. The surface-initiated (SI)-PET-RAFT approach allows enhanced control over layer thickness and spatial resolution in polymer brush patterning at low cost utilizing direct photomasking and a digital micromirror device.
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.
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