Abstract：Organic electroluminescent materials have significant features such as active illumination, wide viewing angle, and high contrast. Rare earth organic complex electroluminescent materials are currently attracting the attention of researchers. In this paper, salicylaldehyde and benzoic acid derivatives are used as raw materials to synthesize salicylaldehyde p-methoxybenzoyl hydrazide (1-H2L) and salicylaldehyde p-methylbenzene by esterification, deuteration and Schiff base condensation. Synthesis of salicylaldoxime series lanthanum rare earth complexes with pyroglycol (2-H2L), salicylaldehyde-bromobenzoylhydrazide (3-H2L) ligands and Pr(NO3)3 as raw materials The structures of the complexes were characterized by infrared spectroscopy and ultraviolet spectroscopy. The ligand is a hydroxyl ν(OH) stretching vibration peak at 3 136～3 141 cm-1, which disappears in the infrared spectrum of the complex. The absorption peak of the complex between 3 330～3 368 cm-1 belongs to the crystallized H2O. The (OH) hydroxyl bending vibration absorption peak, the complex does not have an absorption peak at the hydroxyl group of 3 140 cm-1 corresponding to the ligand, and the absorption waveforms of the three ligands and complexes are similar, and the structure of the ligand and the complex are reacted basically consistent. However, the absorption peaks between the ligand and the complex have a large difference, and it can be inferred that the ligand has been coordinated. The fluorescence properties of the complexes were determined by fluorescence spectrophotometer. The effects of ligand substituents on the fluorescence intensity were discussed. The complexes can be excited by 470 nm blue light and have good red light emission at 608～617 nm. Such phosphors are expected to be applied on OLEDs.
Key words：Organic electroluminescent; Schiff base complexes; Phosphors; Spectral properties
李 兆，曹 静，王永锋. Schiff碱配合物荧光粉的合成及光谱性能研究[J]. 光谱学与光谱分析, 2019, 39(09): 2879-2882.
LI Zhao, CAO Jing, WANG Yong-feng. Synthesis and Spectral Properties of Phosphors Based on Schiff Base Complexes. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(09): 2879-2882.
[1] WANG Hong-sheng, LI Gong-chun, WU Yan-chao, et al(王宏胜, 李公春, 吴艳超, 等). Chinese Journal of Inorganic Chemistry(无机化学学报), 2018，(4): 655.
[2] LI Huan-rong, WANG Tian-ren(李焕荣, 王天任). Chinese Journal of Luminescence(发光学报), 2018, 39(4): 425.
[3] ZHENG Qi, XING Li-rui, LI Dan(郑 霁, 邢立锐, 李 丹). Acta Physico-Chimica Sinica(物理化学学报), 2017, 33(11): 2133.
[4] Hao Zhang, Yuan Fang. Journal of Alloys and Compounds，2019, 781: 201.
[5] QIN Xiao-ting, AO Chen, ZHANG Zhong-yi, et al(秦晓婷, 敖 琛, 张忠义, 等). Chinese Rare Earths(稀土), 2017，(4): 139.
[6] ZHU Qian-hua(朱乾华). Chinese Journal of Luminescence(发光学报), 2015, 36(7): 763.
[7] LIU Hui-yan, WANG Hai-ying, NIU De-zhong, et al(刘会艳, 王海营, 牛德仲, 等). Chinese Journal of Inorganic Chemistry(无机化学学报), 2014, 23(4): 611.
[8] WANG Hong-sheng, LI Gong-chun, ZHANG Wan-qiang, et al(王宏胜, 李公春, 张万强, 等). Journal of Synthetic Crystals(人工晶体学报), 2017, 46(1): 174.
[9] WANG Chun-xiang, LIU Zhi-jun, LI Zhi-feng, et al(王春香, 刘芝君, 李之锋, 等). Journal of the Chinese Rare Earth Societ(中国稀土学报), 2017, 35(2): 197.
