含有3,5-二甲基苯基的吡啶基二氟硼化合物力致荧光变色性能研究  

Mechanofluorochromic properties of pyridyl difluoroboron compounds containing the 3,5-dimethylphenyl group

作　　者：杨艳华 李学良 田佳壮 钱涵 葛丹丹 苟高章[2] 邵林 李福敏 陈玉琨 YANG YanHua;LI XueLiang;TIAN JiaZhuang;QIAN Han;GE DanDan;GOU GaoZhang;SHAO Lin;LI FuMin;CHEN YuKun(Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device,School of Chemistry and Chemical Engineering,Kunming University,Kunming 650214;School of Chemistry and Resources Engineering,Honghe University,Mengzi 661100;Chromatographic Analysis Center,Dali Institute for Food Control,Dali 671000;Physical and Chemical Inspection Center,Dali Institute for Food Control,Dali 671000;Shanghai AB Sciex Pte.Ltd.,Shanghai 201100,China)

机构地区：[1]昆明学院化学化工学院云南省金属有机分子材料与器件重点实验室(筹),昆明650214 [2]红河学院化学与资源工程学院,蒙自661100 [3]大理州食品检验检测院色谱分析中心,大理671000 [4]大理州食品检验检测院理化检验中心,大理671000 [5]上海爱博才思分析仪器贸易公司,上海201100

出　　处：《北京化工大学学报（自然科学版）》2023年第5期48-58,共11页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：云南省科技厅基础研究专项青年项目(202101AU070060);昆明学院引进人才科研项目(YJL2008);昆明学院专业学位研究生教学案例库建设项目(202202001);云南省金属有机分子材料与器件重点实验室(筹)一般项目(YNMOMD2212)。

摘　　要：为了研究含有3,5-二甲基苯基化合物的力致荧光变色(MFC)性能,设计并合成了3种二氟硼化合物(3-BF_(2)、6-BF_(2)和3,6-BF_(2)),通过测定在不同极性有机溶剂中以及在四氢呋喃/水混合溶剂中的荧光发射光谱,探究了这3种化合物的分子内电荷转移(ICT)特性和聚集诱导发光(AIE)效应,并采用机械力刺激的方法测试其MFC性能。结果表明,这3种二氟硼化合物都具备聚集诱导发光性能,但只有6-BF_(2)显示出明显的分子内电荷转移特性和可逆的力致荧光变色行为。X-射线衍射(XRD)测试结果表明,在机械力刺激下,有序的晶相与无序的非晶相之间的相变转换是6-BF_(2)具有力致荧光变色性能的原因。In order to study the mechanofluorochromic(MFC)properties of compounds containing the 3,5-dimethylphenyl group,three difluoroboron compounds(3-BF_(2),6-BF_(2),and 3,6-BF_(2))have been designed and synthesized.The intramolecular charge transfer(ICT)characteristics and aggregation-induced emission(AIE)effects of the three difluoroboron compounds were explored by measuring the fluorescence emission spectra in organic solvents with different polarities and in tetrahydrofuran/water mixed solvents,respectively.The MFC properties of these compounds were studied using external mechanical force stimulation.The results showed that the three difluoroboron compounds exhibited aggregation-induced emission properties,but only 6-BF_(2)exhibited significant intramolecular charge transfer characteristics and reversible mechanofluorochromic behavior.X-ray diffraction(XRD)showed that the phase transition between the ordered crystalline phase and the disordered amorphous phase under mechanical force stimulation is responsible for the mechanofluorochromic properties of 6-BF_(2).

关 键 词：3 5-二甲基苯基 二氟硼化合物 聚集诱导发光 力致荧光变色性能 

分 类 号：O625.6[理学—有机化学] O626.4[理学—化学]