Synthesis and properties of new luminescent hole transporting materials of triarylamine with dehydroabietic acid methyl ester moieties |
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| Authors: | Hong Gao Jie Song Xinwen Zhang Shibin Shang Zhanqian Song |
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| Affiliation: | 1. Institute of Chemical Industry of Forestry Products, CAF, Nanjing 210042, PR China;2. Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, PR China;3. National Engineering Lab. for Biomass Chemical Utilization, Nanjing 210042, PR China;4. Key and Lab. on Forest Chemical Engineering, SFA, Nanjing 210042, PR China;5. Department of Chemistry and Biochemistry, University of Michigan-Flint, 303E Kearsley Street, Flint, MI 48502, USA;6. Key Laboratory for Organic Electronics & Information Displays, Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210036, PR China |
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| Abstract: | A series of triarylamines based on dehydroabietic acid methyl ester moieties (6a–h) were synthesized for possible application as hole transporting materials for organic electroluminescent devices. The target compounds were characterized by elemental analysis, FT-IR, NMR, and mass spectrometry. Their optical, electrochemical, and thermal properties were investigated using UV–vis, PL spectroscopy, cyclic voltammetry (CV), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC), respectively. CV measurements show that the compounds present suitable HOMO values (in a range of −4.63 to −5.11 eV) for hole injection, which is confirmed by theoretical calculations. All compounds were thermally stable. Organic light-emitting diode devices having 6f, 6g, and 6h as a hole transporting layer showed better performance of maximum brightness, turn-on voltage, and maximum luminous efficiency than a comparable device NPB. These compounds could be excellent candidates for applications in OLED devices. |
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| Keywords: | Triarylamine Dehydroabietic acid methyl ester Synthesis Luminescent Hole transporting |
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