Synthesis,Characterization and Properties of Bipolar Triphenylamine Charge Transport Materials

Four bipolar triphenylamine(TPA) charge transport materials were constructed by introducing imidazole and trifluoroacetyl groups into the TPA units, and characterized by the nuclear magnetic resonance spectrum(NMR) and mass spectrometry(MS). Among them, 4-(2-(1,3-trifluoroacetyl)imidazole)-phenyl-4,4?-di(4-methoxyphenyl)amine(2 Me OTPA-IOS, 1) was determined by X-ray single-crystal diffraction. The compound crystallizes in monoclinic system, space group P21/c with a = 24.338(5), b = 9.565(2), c = 11.456(2) ?, β = 99.427(3)°, Mr = 565.47, V = 2631.0(8) ?3,Z = 4,Dc = 1.428 g/cm3, μ = 0.125 mm–1, F(000) = 1160, the final R = 0.0559 and wR = 0.1265 for 5150 observed reflections with I 2σ(I). The optimized configurations of the target compounds were obtained by quantum chemical calculation, and the bipolarity of transportable holes and electrons was predicted by the frontier molecular orbital(HOMO and LUMO), which was further confirmed by the time of flight(TOF) method. In addition, the introduction of the terminal flexible chain enhances the solubility, thermal stability(DSC and TGA) and film-forming property of all compounds, and the frontier orbital energy of the solid film of the compounds was also tested(UV-vis and PYS). Thus, these compounds have the bipolarity of transportable holes and electrons and show good solubility and thermal stability.     

有机锡联苯乙酸酯的合成、结构表征和体外抗癌活性

合成了4个新的有机锡联苯乙酸酯{[(n-C₄H₉)₄Sn(O₂CCH₂C₆H₄C₆H₅-4)]₂O}₂ (1)和R₃SnO₂CCH₂C₆H₄C₆H₅-4(R=C₄H₅，2；c-C₆H₁₁，3；C₆H₅C(CH₃)₂CH₂，4)，利用元素分析、IR、 ¹H和 ¹³C NMR表征了其结构。通过X-射线单晶衍射测定了1和4的晶体结构。化合物1和化合物4均属三斜晶系，空间群P1。化合物1为具有Sn₂O₂四元环的中心对称二聚体结构，4为畸变的四面体结构。生物活性测试结果表明，化合物1和4对3种人癌细胞HeLa、CoLo205和MCF-7具有较好的体外抑制活性。     

双(三有机锡)2，3-吡啶二甲酸酯的合成、表征和体外抗癌活性

合成了2个新的双(三有机锡)2，3-吡啶二甲酸酯2，3-C₅H₃N(CO₂SnR₃)₂ (R=c-C₆H₁₁，1；C₆H₅C(CH₃)₂CH₂，2)，利用元素分析、IR和¹H NMR表征了其结构。通过X-射线单晶衍射测定了配合物2的晶体结构。该化合物晶体属单斜晶系，空间群P2₁/n，a=0.955 3(1)，b=1.811 8(2)，c=3.533 9(4) nm，β=94.914(2)°，Z=4，V=6.094 1(13) nm³，R=0.038 4，wR=0.096 6，S=1.015。2，3-吡啶二甲酸的2个羧基键连2个三有机锡，2个锡原子均为畸变的四面体配位构型。生物活性测试结果表明，化合物1和2对3种人癌细胞HeLa、CoLo205和MCF-7具有好的体外抗癌活性。     

三苯基锡N-(5-氯亚水杨基)-α-氨基酸酯的合成及结构表征

利用三苯基氯化锡和现场生成的5-氯水杨醛缩-α-氨基酸钾反应合成了6种三苯基锡N-(5-氯亚水杨基)-α-氨基酸酯1～6, 通过元素分析、IR和NMR对其结构进行了表征. 利用X射线单晶衍射测定了三苯基锡N-(5-氯亚水杨基)缬氨酸酯(3)和三苯基锡N-(5-氯亚水杨基)异亮氨酸酯(5)的晶体结构. 结果表明锡原子是五配位的, 通过单齿羧基氧原子和相邻分子的酚氧原子对锡的配位形成了具有反式-O₂SnC₃三角双锥结构的一维链状聚合物.