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It can be used to synthesize a variety of α-aryl malononitriles and gave the yields of 50-96%.
参考文献报道的方法并经适当改良后,共合成了12个咪唑鎓盐。
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Results showed that the hybrid monomer could photopolymerize effectively and both free radical and cationic polymerization processes were improved. When 2-Hydroxy-2-methyl-1-phenyl-1-propanone (1173) was introduced into hybrid system containing UVI-6976, the final conversion of propenyl ether double bond and polymerization rate increased obviously. The comparison of photopolymerization kinetics between hybrid and blend system was investigated as well.
结果表明,以硫鎓盐为光引发剂时,这三种杂化单体均可以有效进行杂化光聚合反应,丙烯基醚和丙烯酸酯双键都显示出较快的反应速度和较高的最终转化率,同时在简单结构的硫鎓盐(UVI-6976)引发体系中加入自由基引发剂2-羟基-2-甲基-1-苯基-1-丙酮(1173)后,丙烯基醚双键的阳离子聚合速率和最终转化率都有了很大提高。
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The bulk and solution photopolymerization of vinyl butyl ether were studied using diph-enyl-4-thiophenoxyphenyl sulfonium salt as photoinitiator.
以二苯基-4-苯硫基代苯基硫鎓盐为光引发剂,研究了乙烯基正丁醚的本体和溶液光聚合。
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In the field of visible photosensitive resin, the absorption spectrum, excited state, solvent polarity effect, fluorescence spectrum, fluorescence quenching, concentration effect, photo fading, reaction mechanism as well as photopolymerization kinetics of xanthene iodonium salts and cyanine dye-borate were discussed. It is found that under the radiation of visible light, intra-ion-pair electron transfer reactions occur in bis salt of fluorescein and unsymmetrical trimethine cyanines containing quinoline end group triphenyl-butylboron, and the fading rate is very high.
在可见光敏树脂部分,通过对呫吨染料碘鎓盐和菁染料-硼盐体系的吸收光谱性质、激发态性质、溶剂极性效应、荧光光谱、荧光猝灭、浓度效应、光褪色反应、光聚合动力学等的研究,结果发现:荧光黄双二苯基碘鎓盐体系和含喹啉环端基不对称三甲川菁染料-三苯基丁基硼盐体系在可见光作用下均发生离子对内电子转移反应,且光褪色反应速率很高。
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Three novel hemicyanine derivatives,-N-(4-sulfopropyl)-4-[2-(4- N, N-diethylaminophenyl)-ethenyl]pyridinium,-N-(4-suMbbutyl)- 4-[2-(4-N, N-diethylaminophenyl)ethenyl]pyridinium (EPS4), and-N-(4- su)fobutyl-4-[2-(4-N, N-diethylaminophenyl)ethenyl]quinolinium (EQS4) with different length of alkyl chains between the adsorbing group (RSO3-) and the chromophore group, were synthesized and their photophysical and photoelectrochemical properties were studied.
设计合成了具有不同空间位阻的吡啶盐类和喹啉盐类半菁染料-N-(4—磺酸根丙基)-4-[2-4(4-N,N-二乙基氨基苯基)乙烯基]吡啶鎓盐,-N-4-磺酸根丁基)-4-[2-(4-N,N-二乙氨基苯基)乙烯基]吡啶鎓盐(EPS4)和-N-(4-磺酸根丁基)-4-2-(4-N,N-二乙基氨基苯基)喹啉鎓盐(EQS4),研究了它们的光物理性质,并将它们用作TiO2纳米晶电极的光敏化剂引入光电化学电池中。
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By using density functional theory B3LYP/6-311G++method, the geometric configuration was optimized for tetrahydrofuran、butylene oxide、 secondary oxonium ion and tertiary oxonium ion. And parameters about the electronic structure, bondlength, energy of frontier orbital of these species were determined.
采用DFT中的B3LYP/6-311G++方法对四氢呋喃和环氧丁烷单体、仲氧鎓离子以及叔氧鎓离子进行了几何构型的全优化,确定了各个构型的电子结构、键长和前线轨道能量等参数,并运用前线轨道理论从微观层次上分析了四氢呋喃和环氧丁烷的阳离子均聚反应机理。
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The calculated results indicate that the energy bathers for the formation of dimethyl ether and trimethyl oxonium ion inside HSAPO-34 zeolite are 1.68 and 0.93 eV, respectively. The suggested intermediate oxonium ylide is very unstable and the energy barriers for the formation of C-C bond are over 3.0 eV by concerted pathway.
结果表明,二甲醚和三甲基氧鎓离子在HSAPO-34分子筛上的生成能垒分别为1.68和0.93eV,中间体氧鎓叶立德不能稳定存在,同时表明C-C键通过协同反应形成的能垒均超过3.0ev。
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Because,the amount of double bond of BVE decreases in the process of BVE polymerization,therefore,in the same time the quenched flu-orescence of pyrylium salt can be recovered gradually.
由于在BVE的聚合过程中,被猝灭的氧鎓盐荧光会因BVE聚合、双键减少而使氧鎓盐荧光逐步恢复。
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A group of pyrylium salts with different substituents has been synthesized in this work. Their fluorescence life time, quantum yield and quenching constant by BVE have also been measured. It was found that a strong interaction was observed between BVE and pyrylium salt which contains an electron-withdrawing group, and contrary, the introduction of electron-repulsive groups to the pyrylium salt will decrease this effect. It indicated that these reactions possess the characteristic of electron transfer.
本工作合成了一组带不同取代基的氧鎓盐化合物,并对它们的荧光寿命、荧光量子产率以及用丁基乙烯基醚进行猝灭的荧光猝灭常数进行了测定,发现带拉电子基的氧鎓盐化合物和BVE间存在着较强的相互作用,相反,推电子基的引入则减弱了这种影响,表明反应具有电子转移性质。
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Four hemicyanine derivatives,-N-(4-sulfobutyl)-4-[2-(4-N,N-dimethylamino-phenyl) etheny1] pyridinium (P1),-N-(4-sulfobutyl)-4-[2-(4-N,N-dimethylaminophenyl)-1,3-buteny1] pyridinium (P2),-N-(4-sulfobutyl)-4-2-(4-N,N-dimethylaminophenyl) ethenyll quinolinium (Q1) and-N-(4-sulfobutyl)-4-
合成了具有不同共轭链长度的吡啶盐类及喹啉盐类半菁染料-N-(4-磺酸丁基)-4-[2-4-N,N-二甲基氨基苯基)乙烯基]吡啶鎓盐(P1、-N-(4-磺酸丁基)-4-[2-4-N,N-二甲基氨基苯基)丁二烯基]吡啶鎓盐(P2、-N-(4-磺酸丁基)-4-[2-(4-N,N-二甲基氨基苯基)乙烯基]哇琳鎓盐(Q1)以及-N-(4-磺酸丁基)-4-[2-4-N,N-二甲基氨基苯基丁二烯基]喹啉鎓盐(Q2)。研究了它们的光物理性质,并将它们用作TiO2纳米晶电极的光敏化剂引入光电化学电池。
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carbonium ion:碳鎓离子;阳碳离子[碳原子带阳电荷的有机离子]
carbon ink 复写油墨 | carbonium ion 碳鎓离子;阳碳离子[碳原子带阳电荷的有机离子] | carbonyl group 羰基
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Thermal Gravimetric Analysis:热重分析
在探讨錪鎓盐在层状矽酸盐中的分子断裂反应对蒙脱土层间距的影响研究中,利用热重分析( Thermal Gravimetric Analysis)量测有机改质蒙脱土的成份 ,广角X光绕射仪(wide angle X-ray Diffraction, XRD)分析光照射反应对层间距影响,