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循环伏安法制聚(1,5-萘二胺)膜及其对紫外可见光吸收的研究 总被引:2,自引:0,他引:2
利用循环伏安法合成了1,5-萘二胺(1,5DAN)聚合物膜.从反应的介质、膜的厚度以及掺杂酸的种类等方面,讨论了制备电活性聚1,5-萘二胺(P1,5DAN)膜的影响,结果发现,在酸性水溶液中,初始的电活性比较高,但是,随着循环的继续,聚合物膜的电量损耗比较大,而在乙腈溶液中电量损耗较小;同时还发现,P1,5DAN电活性膜的厚度并不随总电量的增加而增厚;活性聚合物膜是受扩散控制,扩散系数(D)与酸根离子有关.最后,结合电化学,讨论了不同掺杂状态下的紫外可见吸收光谱(UV-Vis),并用FT-IR对所合成的聚合物作了结构表征. 相似文献
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合成了一种新型的有机电致发光材料:N,N'-二苯基-N,N'-二(1-萘基)-1,5-萘二胺(NPN),测定了其吸收光谱和荧光发射光谱.该材料具有很好的热稳定性,DSC测定其玻璃化温度(Tg)高达127℃,循环伏安法(CV)测定其电离势(Ip)为5.30eV,可望用作有机电致发光空穴传输或蓝色发光材料. 相似文献
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α-含氧取代酞菁的聚集性质研究 总被引:2,自引:0,他引:2
以3-硝基邻苯二腈为原料分别与苯酚和甲醇反应合成3-苯氧基邻苯二腈和3-甲氧基邻苯二腈, 这些α-取代的邻苯二腈以二甲氨基乙醇为溶剂, 在有无醋酸锌条件下环合, 分别形成α-四苯氧基锌酞菁、α-四苯氧基无金属酞菁、α-四甲氧基锌酞菁、α-四甲氧基无金属酞菁, 对产物结构进行了表征. 光谱分析结果表明, 此类锌酞菁在氯仿等非配位溶剂中能自发形成J型聚集体, 其Q带出现一个红移吸收带, 经UV-Vis光谱、荧光光谱及MALDI-TOF质谱分析表明, 该聚集体的形成机理为基于酞菁分子间的锌-氧自配位相互作用. 相似文献
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研究了显色剂1,5-二(2-羟基-5-氯苯)-3-氰基甲(月替)(HCPCF)光度法同时测定锌和铜的方法.分别在pH 7.0乙酸铵和pH 3.6乙酸-乙酸钠介质中,Triton X-100存在下,锌和铜与HCPCF分别形成稳定的1∶1蓝色络合物,最大吸收波长分别为645nm和620nm,表观摩尔吸光系数分别为3.16×104L·mol-1·cm-1和3.10×104L·mol-1·cm-1,在0~30μg/25ml浓度范围内均符合比耳定律.可直接用于药物中微量锌和铜的测定.方法准确、快速、简便. 相似文献
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新的酰胺型开链冠醚的合成与性质 总被引:2,自引:0,他引:2
Simon在70年代开发了一类酰胺型开链冠醚,能选择性配位碱土金属离子并可作为中性载体制备离子选择性电极.由于酰胺型开链冠醚易于制备,因此受到人们广泛地重视.Vgtle等提出的“末端基”概念为开链冠醚的合成、设计起了重要的指导作用.前文报道2-甲氧基-1-氨甲基萘与三甘醇二碘化物在无水碳酸钠存在下于乙腈中反应得到双手臂的套索冠醚与碘化钠的配合物.X射线衍射晶体结构分析表明萘环上的甲氧基中的氧原子参加了与钠离子的配位,生成了扭曲的六边形双锥结构配合物.因此2-甲氧基-1-氨基萘可以作为开链冠醚的“末端基”.开链冠醚的合成路线是: 相似文献
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Fu-kui Xiao De-sheng Zhang Qing-nian Dong Wei Wei and Yu-han Suna 《Reaction Kinetics and Catalysis Letters》2006,89(1):131-138
Summary The FT-IR characterization showed that anhydrous zinc acetate hardly interacted with dimethyl carbonate, but it could coordinate
with 1,5-naphthalene diamino to form a new complex. As a result, a new mechanism on 1,5-naphthalene diamino activation was
proposed for the methoxycarbonylation of 1,5-naphthalene diamino with dimethyl carbonate over anhydrous zinc acetate. 相似文献
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Jingjing Jiang Dr. Yves Queneau Prof. Dr. Florence Popowycz 《European journal of organic chemistry》2023,26(19):e202300144
The use of the renewable platform molecule 5-hydroxymethylfurfural (5-HMF) in multi-component reaction with a diamine and an alkynone to generate seven-membered 1,5-benzodiazepines is described. Due to the sensitivity of 5-HMF to strong acidic and basic conditions, the investigation required an in-depth revisit of reaction parameters as compared to benchmark aldehydes. Among catalysts/solvents couples, ammonium acetate in ethanol proved to be a clean and efficient system. These optimized conditions were subsequently used to investigate the scope of the reaction providing a library of 1,5-benzodiazepines in moderate to good yields from a wide range of diversely substituted diamines and alkynones or alkyl alkynoates. 相似文献
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LIU Si-jie NIU Ya-ming ZHU Xiao-liang WANG Gui-bin JIANG Zhen-hua 《高等学校化学研究》2006,22(1):114-117
IntroductionPoly(aryl ether ketone)s are high performance en-gineering plastics with outstanding physical,chemical,thermal and mechanical properties and have been ap-plied to the aerospace industry,the electronic industry,the automobile industry,the petro… 相似文献
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Chin-Ping Yang Wen-Tung Chen 《Journal of polymer science. Part A, Polymer chemistry》1993,31(6):1571-1578
A new bis(phenoxy)naphthalene-containing diamine, 1,5-bis(4-aminophenoxy)naphthalene, was synthesized in two steps from the condensation of 1,5-dihydroxy-naphthalene with p-chloronitrobenzene in the presence of potassium carbonate, giving 1,5-bis(4-nitrophenoxy)naphthalene, followed by hydrazine hydrate/Pd? C reduction. A series of polyamides and copolyamides were synthesized by the direct polycondensation of the diamine with various aromatic dicarboxylic acids or with mixed dicarboxylic acids in N-methyl-2-pyrrolidone (NMP) using triphenyl phosphite and pyridine as condensing agents. The polymers having inherent viscosity of 0.81–1.25 dL/g were obtained in quantitative yield. Most of the polymers were generally soluble in aprotic solvent such as N,N-dimethylacetamide, N-methyl-2-pyrrolidone, etc. The polymers derived from rigid dicarboxylic acids such as terephthalic acid, naphthalene dicarboxylic acid, and 4,4′-biphenyldicarboxylic acid exhibited crystalline patterns. Glass transition temperatures of polymers were in the range of 230–360°C, and 10% weight loss temperatures in nitrogen and air were above 492 and 470°C, respectively. © 1993 John Wiley & Sons, Inc. 相似文献
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The title compound, [Zn(NDC)(2,2'-bipy)]n (NDC = 1,5-naphthalenedicarboxylate, 2,2'- bipy = 2,2'-bipyridine), has been synthesized by a hydrothermal reaction and characterized by single-crystal X-ray diffraction analysis. It crystallizes in monoclinic, space group C2/c with a = 19.967(4), b = 17.158(3), c = 14.276(3) (A), β = 129.623(5)°, V = 3767.4(12) (A)3, Z = 8, C22H14N2O4Zn, Mr = 435.72, Dc = 1.536 g/cm3, F(000) = 1776, μ(MoKa) = 1.336 mm-1, the final R = 0.0777 and wR = 0.2447 for 2032 observed reflections (Ⅰ> 2σ(Ⅰ)). The Zn(Ⅱ) ion is six-coordinated by two nitrogen and four oxygen atoms in a distorted octahedral environment. NDC ligand has a bis(bridging bidentate) coordination mode in the compound. The zinc atoms are linked by carboxylate groups of NDC ligand in bridging mode into a one-dimensional zigzag chain. 相似文献
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1 INTRODUCTION The coordination polymers have attracted much attention in recent years owning to their fascinating molecular structures and potential applications as catalysts, luminescent materials and magnetic materials[1~6]. Consequently, numerous new com- pounds have been produced mostly by using appro- priate organic ligands, especially bridging ligands containing multi-dentate oxygen, nitrogen, or sulfur donors to coordinate with the transition metal centers[7~10]. Among them, 1,4… 相似文献