【作者】 王燕；

【导师】 温福山；

【作者基本信息】 中国石油大学(华东) ， 材料科学与工程， 2016， 硕士

【摘要】 苯并咪唑类衍生物与锌离子配位形成配位化合物后,因其具有良好的光电性能及生物活性,可广泛应用于发光材料、生物模拟、化工催化等领域。本文从苯并咪唑类锌配合物具有发光性能的角度,合成了一系列苯并咪唑类衍生物及其与锌的配位化合物,并进行了相关表征,得到以下结论:（1）成功合成了苯并咪唑和四种2-取代苯并咪唑化合物:2-甲基苯并咪唑（MBIM）,2-苯基苯并咪唑（PBIM）,2-（2′-羟基苯基）苯并咪唑（HPBIM）,2-苯乙烯基苯并咪唑（SEBIM）。采用元素分析、红外、紫外、核磁共振等手段对五种苯并咪唑化合物的结构进行了分析与表征。首次优化了SEBIM的合成条件:当催化剂的液固比（mL/g）为0.75,邻苯二胺/肉桂酸摩尔比为1.1,温度为175℃,时间4 h时,产率最高可达67.8%。另外,在最佳合成条件下,BIM、MBIM、PBIM、HPBIM的产率分别为90.3%、85.1%、60.4%、51.1%。（2）制备了九种苯并咪唑类-锌配位化合物:Zn BIM₂（OAc）₂、ZnMBIM₂（OAc）₂、ZnPBIM₂（OAc）₂、ZnHPBIM₂、ZnSEBIM₂（OAc）₂、ZnBIM₂Cl₂、ZnMBIM₂Cl₂、ZnPBIM₂Cl₂、ZnSEBIM₂Cl₂。采用元素分析、红外、紫外、电导率和差热分析等手段对配合物的结构进行了分析与确定并研究了其稳定性。（3）论文研究了合成的配体及配位化合物的发光性能。苯并咪唑类化合物的发光是由π-π^*电子跃迁产生的,苯并咪唑锌配合物的发光应归属于金属微扰的配体的发光机理。随着配体的共轭程度的增大,配体与配合物的发光强度显著增强。不同种类的锌离子合成的苯并咪唑类锌配合物结构不同,因而它们的发光性能也不完全相同。更多还原

【Abstract】 Owing to the excellent optical performance and biological activity of the benzimidazoles derivatives zinc coordination compounds,they can be widely used as optoelectronic materials,biological simulation materials and catalytic materials in chemical industry.In this paper,from the perspective of the luminescent property of the benzimidazoles zinc complexes,a seies of benzimidazoles derivatives and its zinc complexes were synthesized and all of them were characterized.The results were as follows:（1）Benzimidazole（BIM）and four other benzimidazoles derivatives:2-methylbenzimidazole（MBIM）,2-phenylbenzimidazole（PBIM）,2-（2-hydroxyphenyl）benzimidazole（HPBIM）and 2-styrylbenzimidazole（SEPBIM）were prepared successfully.The synthesized compounds were characterized by elemental analysis,FTIR,UV-vis and ¹HNMR.The optimal conditions of synthesizing of2-styrylbenzimidazole were obtained first time.The optimal reaction conditions were as follows:the liquid-solid ratio（mL/g）of catalyst was 0.75,the mole ratio of raw materials was 1:1,the reaction temperature was 180℃and the reaction time was 4h.The highest yield of SEBIM reached to 67.8%.Moreover,under the optimum synthetic conditions,the yield of BIM,MBIM,PBIM,and HPBIM reached to 90.3%,85.1%,60.4%,51.1%,respectively.（2）Nine zinc coordination compounds were prepared by cooperating five benzimidazoles derivatives with two different kinds of zinc compounds（zinc acetate and zinc chloride）,respectively.The complexes are ZnBIM₂（OAc）₂,ZnMBIM₂（OAc）₂,ZnPBIM₂（OAc）₂,ZnHPBIM₂,ZnSEBIM₂（OAc）₂,ZnBIM₂Cl₂,ZnMBIM₂Cl₂,ZnPBIM₂Cl₂,ZnSEBIM₂Cl₂.All above products were characterized by elemental analysis,FTIR,UV-vis,conductivity and DSC.（3）The photoliuminescent properties of the ligands and the zinc complexes were investigated.The fluorescence of the ligands should be attributed toπ-π^*transition.And the emission of the zinc complexes due to ligand-to-metal charge transfer.It can be obviously found that the intensity of emission became stronger as increasing the conjugation degree of ligands.Additionally,the luminescent properties of zinc complexes were also affected by the zinc ions from different compounds.更多还原