Tailoring tail-free nematogen of ethynylated-schiff base and its evaluation as solution-processable OLED emitting material
A new rigid core dye comprised ESB-NO2 of chromophore moieties of acetylide (C≡C), Schiff base (C˭N) and nitro (NO2) was successfully synthesized to demonstrate tail-free nematogen as emitting material for organic light-emitting diode (OLED). The relationship between liquid crystal molecular structu...
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| Format: | Article |
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Elsevier
2018
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| _version_ | 1825721687785603072 |
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| author | Lim, Soon Kit Julian Rahamathullah, Rafizah Sarih, Norazilawati Muhamad Khairul, Wan Mohd |
| author_facet | Lim, Soon Kit Julian Rahamathullah, Rafizah Sarih, Norazilawati Muhamad Khairul, Wan Mohd |
| author_sort | Lim, Soon Kit Julian |
| collection | UM |
| description | A new rigid core dye comprised ESB-NO2 of chromophore moieties of acetylide (C≡C), Schiff base (C˭N) and nitro (NO2) was successfully synthesized to demonstrate tail-free nematogen as emitting material for organic light-emitting diode (OLED). The relationship between liquid crystal molecular structure, phase transition temperature and electroluminescence behaviour were evaluated. The mesomorphic properties of ESB-NO2 were identified via polarized optic microscopy (POM) which displayed nematic phase of Schlieren textures and their corresponding transition enthalpies were respectively recorded at 25.15 kJ mol−1. The photoluminescence behaviours of ESB-NO2 have been verified at λem,max = 538 nm where this emission are for its π→π * transition, intramolecular charge transfer (ICT) absorptions and fluoresce characters. Having ESB-NO2 as liquid crystalline material, OLED was constructed featuring single-layer indium tin oxide (ITO) coated substrate/ESB-NO2/Au via solution-casting method. The result revealed the single layer ESB-NO2 film displayed satisfactory electroluminescence with intense yellow emission under different direct current (DC) voltages supply. These findings indicate the practicability of designing tail-free nematogenic compounds as promising solution-processed OLED materials. |
| first_indexed | 2024-03-06T05:54:09Z |
| format | Article |
| id | um.eprints-21434 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:54:09Z |
| publishDate | 2018 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | um.eprints-214342019-05-31T02:35:14Z http://eprints.um.edu.my/21434/ Tailoring tail-free nematogen of ethynylated-schiff base and its evaluation as solution-processable OLED emitting material Lim, Soon Kit Julian Rahamathullah, Rafizah Sarih, Norazilawati Muhamad Khairul, Wan Mohd Q Science (General) QD Chemistry A new rigid core dye comprised ESB-NO2 of chromophore moieties of acetylide (C≡C), Schiff base (C˭N) and nitro (NO2) was successfully synthesized to demonstrate tail-free nematogen as emitting material for organic light-emitting diode (OLED). The relationship between liquid crystal molecular structure, phase transition temperature and electroluminescence behaviour were evaluated. The mesomorphic properties of ESB-NO2 were identified via polarized optic microscopy (POM) which displayed nematic phase of Schlieren textures and their corresponding transition enthalpies were respectively recorded at 25.15 kJ mol−1. The photoluminescence behaviours of ESB-NO2 have been verified at λem,max = 538 nm where this emission are for its π→π * transition, intramolecular charge transfer (ICT) absorptions and fluoresce characters. Having ESB-NO2 as liquid crystalline material, OLED was constructed featuring single-layer indium tin oxide (ITO) coated substrate/ESB-NO2/Au via solution-casting method. The result revealed the single layer ESB-NO2 film displayed satisfactory electroluminescence with intense yellow emission under different direct current (DC) voltages supply. These findings indicate the practicability of designing tail-free nematogenic compounds as promising solution-processed OLED materials. Elsevier 2018 Article PeerReviewed Lim, Soon Kit Julian and Rahamathullah, Rafizah and Sarih, Norazilawati Muhamad and Khairul, Wan Mohd (2018) Tailoring tail-free nematogen of ethynylated-schiff base and its evaluation as solution-processable OLED emitting material. Journal of Luminescence, 201. pp. 397-401. ISSN 0022-2313, DOI https://doi.org/10.1016/j.jlumin.2018.05.025 <https://doi.org/10.1016/j.jlumin.2018.05.025>. https://doi.org/10.1016/j.jlumin.2018.05.025 doi:10.1016/j.jlumin.2018.05.025 |
| spellingShingle | Q Science (General) QD Chemistry Lim, Soon Kit Julian Rahamathullah, Rafizah Sarih, Norazilawati Muhamad Khairul, Wan Mohd Tailoring tail-free nematogen of ethynylated-schiff base and its evaluation as solution-processable OLED emitting material |
| title | Tailoring tail-free nematogen of ethynylated-schiff base and its evaluation as solution-processable OLED emitting material |
| title_full | Tailoring tail-free nematogen of ethynylated-schiff base and its evaluation as solution-processable OLED emitting material |
| title_fullStr | Tailoring tail-free nematogen of ethynylated-schiff base and its evaluation as solution-processable OLED emitting material |
| title_full_unstemmed | Tailoring tail-free nematogen of ethynylated-schiff base and its evaluation as solution-processable OLED emitting material |
| title_short | Tailoring tail-free nematogen of ethynylated-schiff base and its evaluation as solution-processable OLED emitting material |
| title_sort | tailoring tail free nematogen of ethynylated schiff base and its evaluation as solution processable oled emitting material |
| topic | Q Science (General) QD Chemistry |
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