喹喔啉与二辛基芴交替共聚物的合成及其酸致变色性能

发布时间：2018-03-18 09:14

本文选题：喹喔啉　切入点：二辛基芴　出处：《功能高分子学报》2017年04期 　论文类型：期刊论文

【摘要】：通过还原4,7-二溴-2,1,3-苯并噻二唑制备2,5-二溴邻苯二胺,并分别与1,10-邻菲罗啉-5,6-二酮、苊醌、菲醌和联苯甲酰缩合反应,制备了4种单喹喔啉衍生物(M1、M2、M3、M4)。在二乙酸钯(Pd(CH_3COO)_2)和配体三环己基膦的催化下,通过Suzuki反应将2,7-二(4,4,5,5-四甲基-1,3,2-二氧杂硼酸烷)-9,9-二辛基芴(M5)分别与M1、M2、M3、M4交替共聚制得4种聚合物(P1、P2、P3、P4)。通过FT-IR和~1H-NMR等测试方法表征所有单体及聚合物的结构。通过UVVis光谱和荧光光谱探讨了4种聚合物在CHCl_3溶液中本征态的光谱性能,以及相应聚合物的CHCl_3溶液被低浓度三氟乙酸(TFA)质子化时的光学性能。结果显示,4种聚合物对低浓度TFA有良好的敏感性。聚合物P1与2.17×10~(-7) mol/L的TFA作用时,P1的CHCl_3溶液明显变色。聚合物P2~P4的CHCl_3溶液与4.32×10~(-3) mol/L的TFA作用时,溶液颜色发生变化,与此同时在UV-Vis光谱上500~800nm处出现新的吸收带。同时,4种交替共聚物的CHCl_3溶液具有较好的荧光性能,当溶液中加入低浓度的TFA时,即在4种聚合物的CHCl_3溶液中分别加入7.0×10~(-10)、1.73×10~(-6)、7.5×10~(-7) mol/L和4.0×10~(-6) mol/L的TFA时,其荧光发射强度明显减弱。
[Abstract]:The synthesis of 2o 5-dibromo-o-phenylenediamine by reducing 4o 7- dibromo-2br 1N 1N 3 benzothiadiazole and condensation reaction with 1o 10 o phenanthroline 6 dione, acenaphthene quinone, phenanthraquinone and biphenyl acenoquinone, respectively. Four monoquinoxaline derivatives, M _ (1) H _ (2) M _ (2) M _ (3o) M _ (4), and the ligand trichlorocyclohexyl phosphine, were prepared under the catalysis of palladium diacetate (PD) and tricyclohexylphosphine (trichlorophosphonium). By Suzuki reaction, four kinds of polymers were synthesized by alternating copolymerization of P1P1P2P3P3P4P4, FT-IR and 1H-NMR. The structures of all monomers and polymers were characterized by FT-IR and 1H-NMR. The structures of all monomers and polymers were characterized by FT-IR and 1H-NMR. All the monomers and polymers were synthesized by alternating copolymerization of M1M2P2P3P4P4 with M1OM2P2P3P4P4. The structures of all monomers and polymers were characterized by FT-IR and 1H-NMR. The structures of all monomers and polymers were characterized by UVVis spectra. The spectral properties of the intrinsic states of four polymers in CHCl_3 solution were investigated. And the optical properties of the corresponding polymer CHCl_3 solution when protonated by low concentration trifluoroacetate. The results show that the four kinds of polymers have good sensitivity to low concentration TFA. When the polymer P1 acts with the TFA of 2.17 脳 10 ~ (-7) mol/L, the CHCl_3 solution of P _ (1) is bright. When the CHCl_3 solution of the polymer P2P4 acts with the TFA of 4.32 脳 10 ~ (3) mol/L, The color of the solution changed, and a new absorption band appeared at 500 ~ 800nm in the UV-Vis spectrum. At the same time, the CHCl_3 solution of four kinds of alternating copolymers had better fluorescence properties, when the low concentration of TFA was added to the solution, In other words, the fluorescence emission intensity of the four kinds of polymers decreased obviously when the TFA of 7.0 脳 10 ~ (-10) -10 ~ (-10) -10 ~ (-10) ~ (-1) mol/L and 4.0 脳 10 ~ (-6) mol/L were added into the solution of four kinds of polymers, respectively.
【作者单位】：新疆大学化学化工学院功能高分子重点实验室;
【基金】：国家自然科学基金(21662034,21164011) 新疆大学博士启动基金项目(BS150226)
【分类号】：O633.5

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