摘要
金属-有机框架材料,因其在存储、发光等方面的潜在应用而备受关注。具有良好电子传输能力的噻吩及其衍生物,是很多光电材料的重要有机组分。3,4-二甲基(2,3-b)并噻吩-2,5-二羧酸(H_(2)dttd),不仅具有多样的配位模式,而且拥有富电子的共轭体系,是构筑荧光性金属-有机框架的合适原料。本文报道一个新的三维铅基金属-有机框架。在溶剂热条件下,在H_(2)dttd与硝酸铅反应合成了一个新颖的化合物[Pb_(2)(dttd)_(2)(DMF)]_(n)(Pb-MOF,DMF=N,N-二甲基甲酰胺),并通过单晶X-射线衍射、热重、红外等表征。晶体结构揭示出,含共轭体系的dttd^(2-)键合Pb^(2+)生成了一个三维金属-有机框架,结构中含一维的金属氧聚合链[Pb_(2)O9]_(n)。新化合物在518 nm处有最大荧光发射。
Metal-organic framework(MOF)has received tremendous attention due to potential applications such as storage and luminescence.Thiophene and its derivatives are important organic moieties in a variety of optoelectronic materials owing to their nature of good electron-transfer ability.3,4-dimethylthieno[2,3-b]thiophene-2,5-dicarboxylic acid(H_(2)dttd)with multiple coordination modes and a rich-electron conjugated system is an appropriate raw material for luminescen MOFs.A new three-dimensional Pb-MOF was presented.The novel compound[Pb_(2)(dttd)_(2)(DMF)]n(Pb-MOF,DMF=N,N-Dimethylformamide)was synthesized from H_(2)dttd and Pb(NO3)_(2) under solvothermal conditions,and characterized by X ray single crystal diffraction,thermo-gravimetric analysis,infra-red spectrum,and so on.Crystal structure analysis revealed that dttd^(2-)with conjugated system coordinated with Pb^(2+)generate three-dimensional metalorganic framework containing one-dimensional M-O polymeric chain of[Pb_(2)O9]n.The new compound showed photoluminescence with emission maximum at 518 nm.
作者
熊俊豪
林冲
黄彩运
高雪栩
宾巧
陈新
黄坤林
XIONG Junhao;LIN Chong;HUANG Caiyun;GAO Xuexu;BIN Qiao;CHEN Xin;HUANG Kunlin(College of Chemistry,Chongqing Normal University,Chongqing 401331,China)
出处
《广州化工》
2025年第11期69-71,共3页
GuangZhou Chemical Industry
基金
重庆市大学生创新训练项目(S202210637148X)。
关键词
噻吩-2
5-二羧酸
晶体结构
荧光
铅
金属-有机框架
thiophene-2,5-dicarboxylic acid
crystal structure
photoluminescence
lead
metal-organic framework
