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N-(2-乙烯氧乙基)-1,8-萘二甲酰亚胺聚合物与共聚物的荧光行为 总被引:2,自引:0,他引:2
<正> 我们曾报道过一系列含有给电子生色基团的丙烯酰类单体如甲基丙烯酸二甲氨基苄酯、N-(N′,N′-二甲氨基苯基)丙烯酰胺类、8-丙烯酰氧喹啉类、N-丙烯酰-N′-苯基哌嗪类、N-丙烯酰-N′-嘧啶哌嗪类、N-甲基丙烯酰氧乙基-N-甲基代苯胺等的合成、聚合、引发行为以及它们的聚合物的荧光行为。这些单体结构的共同点在于其双键为缺电子性而生色基团为给电子性,因而在荧光行为上,由于生成激基复合物或电荷转移而发生荧光 相似文献
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关于含有芳香叔胺基的烯类单体,我们曾报道过N,N-二甲氨基苯乙烯,N-(4—N′,N′-二甲氨基苯基代丙烯酰胺(DMAPAA),N-(4-N′,N′-二甲氨基苯基代甲基丙烯酰胺(DMAPMA),甲基丙烯酸-4-N,N-二甲氨基苄脂(DMABMA),8-丙烯 相似文献
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<正> 我们曾报道过甲基丙烯酸-4-N,N-二甲氨基苄酯(DMABMA),4-N,N-二甲氨基苯乙烯(DMAS)等含芳香叔胺基的烯类衍生物不仅可以作为氧化还原引发体系组分引发烯类单体如甲基丙烯酸甲酯(MMA)的聚合,而且还进入MMA的聚合物链中。在另文中报道了两个芳香叔胺取代的丙烯酰胺:N-(4-N′,N′-二甲氨基苯基)丙烯酰胺(DMAPAA)和N-(4-N′,N′-二甲氨基苯基)甲基丙烯酰胺(DMAPMA)的合成及其聚合的研究,本文研究了这两个丙烯酰胺衍生物与过氧化苯甲酰(BPO)组成的氧化还 相似文献
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<正> 前文报道了含芳香叔胺基丙烯酸酯-甲基丙烯酸4-N,N-二甲氨基苄酯(DMABMA)的合成和聚合。这种在分子中既含有二甲氨基苯基,又含有双键的单体为“可聚合芳香叔胺”,在过氧化二酰如过氧化苯甲酰(BPO),过氧化月桂酰(LPO)引发下,芳香叔胺残基参与氧化还原引发体系,进而双键发生聚合反应。本文报道了二甲氨基苯基取代丙烯酰胺,即N-(4-N,N‘-二甲氨基苯基)丙烯酰胺(DMAPAA)和N-(4-N,N-二甲氨基苯基)甲基丙烯酰胺(DMAPMA)的合成及聚合。 相似文献
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通过Knoevenagel反应合成了3个Y型三苯胺生色分子N,N-二{4-[2-(2-苯并噻唑基)乙烯基]苯基}苯胺(BBtVPA)、N,N-二{4-[1-(2-苯并噻唑基)-1,3-丁二烯-4-基]苯基}苯胺(BBtBPA)和N,N-二{4-[1-(2-二氰基甲叉-3-氰基-5,5-二甲基-2,5-二氢-4-呋喃基)-1,3-丁二烯-4-基]苯基}苯胺(BCfBPA), 以及4个一维偶极分子4-[2-(2-苯丙噻唑基)乙烯基]-N,N-二苯基苯胺(BtVPA)、1-(2-苯并噻唑基)-4-[4-(N,N-二苯基)氨基]苯基-1,3-丁二烯(BtAPB)、1-[(2-二氰基甲叉-3-氰基-5,5-二甲基-2,5-二氢)-4-呋喃基]-4-[4-(N,N-二苯基氨基)]苯基-1,3-丁二烯(CfAPB)和4-[2-(2-二氰基甲叉-3-氰基-5,5-二甲基-2,5-二氢呋喃-4-基)乙烯基]-N,N-二苯基苯胺(CfVPA). 测定了生色分子的紫外吸收和荧光性质, 在二氯甲烷中, Y型分子BBtVPA, BBtBPA和BCfBPA的最大吸收波长分别为425, 443和613 nm, 比偶极分子红移了约30 nm, Y型分子BBtVPA和BBtBPA的最大荧光发射峰分别位于516和558 nm, 比偶极分子稍有红移. 根据双能级模型理论, 用溶致变色法测定了生色分子的二阶非线性极化率(β), Y型分子BBtVPA, BBtBPA和BCfBPA的β0分别为40×10-30, 64×10-30和238×10-30 esu, 比相应的偶极分子分别提高了0.9~2.8倍. 结果表明, 提高吸电子基团强度, 增大共轭体系有助于获得更大的β值. 相似文献
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8-丙烯酰氧喹啉及其聚合物与四溴化碳双组分体系敏化的丙烯腈光聚合 总被引:1,自引:0,他引:1
Photopolymerization of acrylonitrile (AN) sensitized by binary component initiators consisting of 8-acryloyloxyquinoline (AQ) and its polymer (PAQ) with carbon tetrabromide (CTB) are investigated kinetically. It is found that the polymerization rates are proportional to 0.19th power of AQ concentration, 0.35th power of CTB concentration and 0.62th power of AN concentration for AQ-CTB system initiation system; proportional to 0.24th power of PAQ concentration, 0.22th power of CTB concentration and 1.0th power of AN concentration initia-ted by above systems are obtained to be 5.26Kcal/mol and 6.34Kcal/mol respectively. It is also found that the polymerization rates sensitized by addition of CTB to AQ or PAQ are much higher than that ofAQ or PAQ alone. Forom the fluorescence analysis of AN polymers,it is confirmed that AQ or PAQ joints into the AN polymer chains. The molecular weight of PAN sensitized by the binary initiatorsystems is lower than that of AQ or PAQ sensitized. 相似文献
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The photopolymerization of acrylonitrile sensitized by N-methyl-N-(2-methacryloyloxye-thyl)aniline (MEMA) was studied kinetically. The photopolymerization rate of AN in DMF by using MEMA as sensitizer is proportional to 0.32 th power of MEMA concentration and 1.20 th power of AN concentration. The overall activation energy for the polymerization was found to be 4.82 Kcal/Mol. From the fluorescence analysis of obtained polyacrylonitrile sensitized by MEMA, it was confirmed that MEMA not only joined the inition but also entered into the polyacrylonitrile chains. The initiation mechanism was proposed tentatively. 相似文献
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N-甲基丙烯酰-N′-嘧啶基哌嗪及其聚合物敏化的丙烯腈光聚合 总被引:1,自引:2,他引:1
The photopolymerization of acrylonitrile (AN) sensitized by N-methacrylyl-N'-pyrimidi-nopiperazine (MPMP) and its polymer, P(MPMP) was studied kinetically. It was found that the photopolymerization rate of AN sensitized by monomeric MPMP is proportional to 0.35th power of MPMP concentration and 0.85th power of AN concentration, respectively. In the case sensitized by Polymeric MPMP, P(MPMP) is proportional to 0.30th power of P(MP-MP) concentration and 1.0 power of AN concentration, respectively. The overall activation energies for photopolymerization sensitized with MPMP and P(MPMP) were determined to be 4.71Kcal/mol and 4.58Kcal/mol,respectively.From the fluorescence analysis for P(AN) senstitized by either MPMP or P(MPMP),it was confirmed that MPMP and P(MPMP) not only sensitized the photopolymerization of AN but also entered into the P(AN) chains. 相似文献
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一种水溶性可聚合敏化剂N-甲基丙烯酰-N'-嘧啶哌嗪敏化的丙烯酰胺光聚合 总被引:1,自引:1,他引:1
The photopolymerization of acrylamide (AAm) was studied by using N-methacrylyl-N'-pyrimidinopip (MPMP) as sensitizer under UV irradiation.The photopolymerition rate of AAm in water with MPMP as sensitizer is proportional to 0.36th power of MPMP comcentration and 0.88th power of AAm concentration. The overall activation energy for the polymerization is determined to be 5.02Kcal/mol. A super-high MW (107) of PAAm are obtained. The MW is decreased with both the increasing of MPMP concentration and the raising of polymerizat-ion temperature,and inereased with the increase of AAm concentration. Fluoresce-nt analysis indicates that MPMP not only initiates the photopolymerization of vinyl monomers,but also enters into the polymer chains. 相似文献