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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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Main Authors: Lim, Soon Kit Julian, Rahamathullah, Rafizah, Sarih, Norazilawati Muhamad, Khairul, Wan Mohd
Format: Article
Published: Elsevier 2018
Subjects:
Q Science (General)
QD Chemistry
Online Access:http://eprints.um.edu.my/21434/
https://doi.org/10.1016/j.jlumin.2018.05.025
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spelling my.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 https://doi.org/10.1016/j.jlumin.2018.05.025 doi:10.1016/j.jlumin.2018.05.025
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QD Chemistry
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
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.
format Article
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
title 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_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_sort tailoring tail-free nematogen of ethynylated-schiff base and its evaluation as solution-processable oled emitting material
publisher Elsevier
publishDate 2018
url http://eprints.um.edu.my/21434/
https://doi.org/10.1016/j.jlumin.2018.05.025
_version_ 1643691563707006976
score 13.211869

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