Nearly 100% Photocrosslinking Efficiency in Ultrahigh Work Function Hole-Doped Conjugated Polymers Using Bis(fluorophenyl azide) Additives
| Autor: | Cindy Guanyu Tang, Zaini Jamal, Hao-Yu Phua, Lay-Lay Chua, Rui-Qi Png, Desmond W. Y. Teo |
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| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
0303 health sciences Materials science Doping Polymer Conjugated system 010402 general chemistry Photochemistry 01 natural sciences Conjugated Polyelectrolytes Polyelectrolyte 0104 chemical sciences Overlayer 03 medical and health sciences chemistry.chemical_compound chemistry Copolymer General Materials Science Azide 030304 developmental biology |
| Zdroj: | ACS applied materialsinterfaces. 11(51) |
| ISSN: | 1944-8252 |
| Popis: | Self-compensated (SC) hole-doped conjugated polyelectrolytes with high work functions can provide efficient hole-injection and -collection layers for organic and other semiconductor devices. If these films can be photocrosslinked, the semiconductor overlayer can be deposited from a wider range of solvents, enabling flexibility in device design and fabrication. However, a generic photocrosslinking methodology for these materials is not yet available. Here, we demonstrate that sFPA82-TfO, the recently developed bis(fluorophenyl azide) photocrosslinker that is also i-line compatible, can surprisingly give 100% efficient photocrosslinking for SC hole-doped conjugated polyelectrolytes, i.e., one crosslink per reactive moiety, using mTFF-C2F5SIS-Na, a triarylamine–fluorene copolymer, as the model polyelectrolyte, without degrading its ultrahigh work function of 5.75 eV. The photocrosslinking efficiency is much higher than in the corresponding undoped polyelectrolyte and nonconjugated polyelectrolyte films, wher... |
| Databáze: | OpenAIRE |
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