Polylactide‐perylene derivative for blue biodegradable organic light‐emitting diodes
| Autor: | Bassil A Abdullah, Aula A Alwattar, Peter Quayle, Hameed A. Al-Attar, Stephen G. Yeates, Athir Haddad |
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| Rok vydání: | 2020 |
| Předmět: |
Lactide
Materials science Polymers and Plastics Organic Chemistry Doping 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Indium tin oxide chemistry.chemical_compound chemistry Polylactic acid PEDOT:PSS Polymer chemistry Materials Chemistry OLED Quantum efficiency 0210 nano-technology Perylene |
| Zdroj: | Polymer international, 2020, Vol.70(1), pp.51-58 [Peer Reviewed Journal] |
| Popis: | In this work we demonstrate, for the first time, the use of polylactic acid (PLA) as a biodegradable host matrix for the construction of the active emissive layer of organic light‐emitting diode (OLED) devices for potential use in bioelectronics. In this preliminary study, we report a robust synthesis of two fluorescent PLA derivatives, pyrene‐PLA (AH10 ) and perylene‐PLA (AH11 ). These materials were prepared by the ring opening polymerisation of l ‐lactide with hydroxyalkyl‐pyrene and hydroxyalkyl‐perylene derivatives using 1,8‐diazabicyclo[5.4.0]undec‐7‐ene as catalyst. OLEDs were fabricated from these materials using a simple device architecture involving a solution‐processed single‐emitting layer in the configuration ITO/PEDOT:PSS/PVK:OXD‐7 (35%):AH10 or AH11 (20%)/TPBi/LiF/Al (ITO, indium tin oxide; PEDOT:PSS, poly(3,4‐ethylenedioxythiophene) doped with poly(styrenesulfonic acid); PVK, poly(vinylcarbazole); OXD‐7, (1,3‐phenylene)‐bis‐[5‐(4‐tert‐butylphenyl)‐1,3,4‐oxadiazole]; TPBi, 2,2′,2″‐(1,3,5‐benzenetriyl)tris(1‐phenyl‐1H‐benzimidazole)). The turn‐on voltage for the perylene OLED at 10 cd m–2 was around 6 V with a maximum brightness of 1200 cd m–2 at 13 V. The corresponding external quantum efficiency and device current efficiency were 1.5% and 2.8 cd A–1 respectively. In summary, this study provides proof of principle that OLEDs can be constructed from PLA, a readily available and renewable bio‐source. |
| Databáze: | OpenAIRE |
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