广西科技大学学报2025，Vol.36Issue(5)：108-117,124,11.DOI:10.16375/j.cnki.cn45-1395/t.2025.05.014
新型芳基羧酸锌(Ⅱ)配合物的合成结构及介电性能
Synthesis,structural characterization and dielectric properties of zinc(Ⅱ)coordination polymers
摘要
Abstract
Dielectric polymers used for electrostatic energy storage suffer from low energy storage density and poor discharge efficiency at high operating temperature,which limits their applications in electronic equipment and systems.The energy storage properties of dielectric polymers can be significantly improved by introducing deep trap energy levels into polymer matrix and constructing multi-layer structure by doping nano-fillers.In this paper,organometallic complexes of nano-fillers with high electron affinity molecular semiconductors were synthesized.Using 3,5-ditertbutyl-2-hydroxybenzoic acid as the raw material and deionized water as the initiator,the novel mental complex of{[Zn(3,5-thbzc)2(H2O)2]·C3H7NO·2H2O}n(where t=tbutyl,hbzc=2-hydroxybenzoato)(complex 1)was synthesized under standard temperature and pressure conditions.The structure and morphology of the complex were characterized by single crystal X-ray diffractometer(SC-XRD)and X-ray powder diffraction(XRPD),scanning electron microscope(SEM),Fourier transform infrared spectrometer(FTIR)and simultaneous thermal analyzer(STA).The dielectric constant of the complex with temperature was measured at different frequencies.The results show that complex 1 adopts a monodentate four-coordination mode.SEM clearly shows that complex 1 exists in the form of irregular nanowire clusters.The band gap of complex 1 was calculated by UV-vis-NIR spectroscopy.It is proved that complex 1 is a wide band gap semiconductor with a band gap of 3.28 eV.The results of dielectric studies show that complex 1 exhibits a high dielectric constant at room temperature(κ=8.00 at 1 kHz).Adding a small amount of 5.0%complex 1 to PVDF matrix increases the dielectric constant to 19.73 at 1 kHz,which is about 1.8 times higher than that of pure PVDF at room temperature(κ=11.01 at 1 kHz).Therefore,this metal-organic complex demonstrates significant potential as an organic nanofiller for enhancing the dielectric performance of dielectric polymers.关键词
纳米填料/3,5-二叔丁基邻羟基苯甲酸/金属有机配合物/介电特性Key words
nanofiller/3,5-ditertbutyl-2-hydroxybenzoic acid/metal-organic complexes/dielectric properties分类
化学化工引用本文复制引用
管朦,余慧群..新型芳基羧酸锌(Ⅱ)配合物的合成结构及介电性能[J].广西科技大学学报,2025,36(5):108-117,124,11.基金项目
广西自然科学基金项目(2021GXNSFAA96073) （2021GXNSFAA96073）
南宁市科学研究与技术开发计划项目(20223231) （20223231）
广西科技计划项目(桂科AB22080003)资助 （桂科AB22080003）
