采用超声辅助溶剂热法合成一种氧化石墨烯(GO)改性铕(Ⅲ)-二苯甲酰甲烷-三苯基氧膦(Eu-DBM-TPPO-GOs)近紫外转换红光材料,通过元素分析、紫外光谱、红外光谱、热重、X射线粉末衍射、扫描电镜和荧光对结构和性能进行表征。结果表明:配体与铕原子有效配位,适量GO添加改性能提高材料发光性能和品质。添加质量为0.009%时,分解温度达到230℃以上,在300～500nm呈现强激发带,在611nm发射强特征红光,量子产率23.5%,荧光寿命0.212ms,色坐标(0.655,0.340),并结合结构和性能对GO改性机理进行了分析。
A new type of graphene oxide modified photoluminescent complex of europium-dibenzoylmethane-triphenylphosphine oxide(Eu-DBM-TPPO-GOs) was synthesized by ultrasonic assisted solvothermal method.The properties and luminescence performance were characterized by elemental analysis,UV,FT-IR,TG,XRD,SEM and FL.The results exhibited that ligands were coordinated effectively with central europium atom,luminescence performance and quality was improved with appropriate added amount of graphene oxide.Eu-DBM-TPPO-GOs suggested favorable thermal stability with decomposition temperature above 230℃,exhibited strong excitation band at 300～500nm and strong characteristic red light emission at 611nm,and the quantum yield was 23.5%,fluorescence lifetime was 0.212ms,chromaticity coordinates was (0.655,0.340),respectively,when added 0.009%wt.Furthermore,the modification mechanism of graphene oxide was explored based on its structure and performance.
[1] Seetha-Lekshmi S,Ramya A R,Reddy M L P,et al.Lanthanide complex-derived white-light emitting solids:a survey on design strategies[J].Journal of Photochemistry and Photobiology C:Photochemistry Reviews,2017,33:109-131.
[2] 余兴建,舒伟程,胡润,等.高出光品质LED封装:现状及进展[J].中国科学:技术科学,2017,47(9):891-922.
[3] Xia Zhiguo,Liu Quanlin.Progress in discovery and structural design of color conversion phosphors for LEDs[J].Progress in Materials Science,2016,84:59-117.
[4] 申崇渝,徐征,赵谡玲,等.LED蓝光泄露安全性研究[J].光谱学与光谱分析,2014,34(2):316-321.
[5] Vigato P Alessandro,Peruzzo Valentina,Tamburini Sergio.The evolution of β-diketone or β-diketophenol ligands and related complexes[J].Coordination Chemistry Reviews,2009,23(7-8):1099-1201.
[6] Bala Manju,Kumar Satish,Taxak V B,et al.Synthesis,photoluminescent features and intramolecular energy transfer mechanism of europium(Ⅲ) complexes with fluorinate β-diketone ligand and auxiliary ligands[J].Journal of Fluorine Chemistry,2015,178:6-13.
[7] 罗海燕,周靖,张燕娟,等.氧化石墨烯的制备及其对罗丹明B的吸附性能[J].化工新型材料,2019,47(1):172-176,180.
[8] Li Jiaang,Li Miaomiao,Gui Peng,et al.Hydrothermal synthesis of sandwich interspersed LaCO3OH/Co3O4/graphene oxide composite and the enhanced catalytic performance for methane combustion[J].Catalysis Today,2019,327:134-142.
[9] Ahn Yongtae,Oh Heegun,Yoon Yeojoon,et al.Effect of graphene oxidation degree on the catalytic activity of graphene for ozone catalysis[J].Journal of Environmental Chemical Engineering,2017,5(4):3882-3894.
[10] Lu Siyu,Sun Jing,Wang Yuan,et al.Preparation and properties of temperature sensitive paint based on Eu(DBM)3phen as probe molecule[J].Journal of Rare Earths,2018,36(6):669-674.
[11] Zhan Xuehui,Xiao Zhongliang,Zhan Hanhui,et al.Syntheses and fluorescent properties of complexes of Eu(Ⅲ) with HTTA,TPPO and benzoic acid[J].Journal of Rare Earths,2009,27(3):368-371.
[12] Zhang Weilong,Yu Hui,Dong Xiangting.Hemispheric ordered porous Eu(TTA)3(TPPO)2/ZnO fluorescence composites and its preparation method[J].Powder Technology,2019,355:355-362.
[13] 李利平,张爱琴,贾虎生,等.绿光荧光粉铽-磺基水杨酸-十一烯酸的合成及发光机理[J].光学学报,2014,34(5):205-211.
[14] 尹芳,陈迪钊,刘佳佳,等.氧化石墨烯的制备工艺及热稳定性[J].材料科学与工程学报,2013,31(3):336-340,408.
[15] 朱雪乔,杜鹃,袁琪,等.氧化石墨烯掺杂含量对石墨烯/PEDOT∶PSS复合材料电化学性能的影响[J].化工新型材料,2018,46(12):151-155.
[16] Mellado C,Figueroa T,Baez R,et al.Effects of probe and bath ultrasonic treatments on graphene oxide structure[J].Materials Today Chemistry,2019,13:1-7.
[17] Gao Li,Wang Linbian,Yang Liu,et al.Preparation,characterization and antibacterial activity of silver nanoparticle/graphene oxide/diatomite composite[J].Applied Surface Science,2019,484:628-636.
[18] Wang Yaobing,Kurunthu Dharmalingam,Scott Gary W,et al.Fluorescence quenching in conjugated polymers blended with reduced graphitic oxide[J].The Journal of Physical Chemistry C,2010,114(9):4153-4159.
[19] Treossi Emanuele,Melucci Manuela,Liscio Andrea,et al.High-contrast visualization of graphene oxide on dye-sensitized glass,quartz,and silicon by fluorescence quenching[J].Journal of the American Chemical Society,2009,131(43):15576-15577.
基金资助
浙江省分析测试科技计划项目(2018C37046);宁波市公益类科技计划项目(2019C10005);浙江省大学生科技创新(新苗人才计划)项目(2019R420013);国家大学生创新创业训练计划项目(201910876023);浙江省“生物工程”一流学科项目(CX2019030);浙江万里学院2018年课堂教学改革项目(kg2018014)
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