共查询到19条相似文献,搜索用时 62 毫秒
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深色杂环偶氮染料的合成及PPP—MO理论在染料电子光谱研究… 总被引:6,自引:0,他引:6
合成了以4-氯与-醛基-2-氨基噻唑等为重氮组分,苯胺衍生物为偶合组分的二十一个杂环单偶氮染料,其中有十个品种吸收波长大于630nm,另外还有两个品种吸收波长大于760nm。用PPP-MO理论对染料分子的电子光谱进行了计算。发现理论值与观测值之间存在着良好的线性关系。 相似文献
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Some novel 1:1 and 1 :2 Fe complex azo dyes were synthesized in this study.The mass spectrum analysis of 1:1 and 1:2 Fe complex azo dyes is presented.Lightfastness,rubbing fastness and washing fastness of these metallized complex dyes were evaluated for use on wool.Results show that these dyes are of good lightfastness and satisfactory brown shades. 相似文献
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含异双活性基活性染料的合成工艺 总被引:5,自引:1,他引:5
综述了含异双活性基的活性染料的品种和合成工艺,提示了若干尚未公开的活性染料的化学结构合成工艺涉及单、双偶氮类、蒽醌类、酞菁类、甲脂类和三苯二噁嗪类染料,色谱从黄到黑,从单一结构到拼色染料品种,其化学反应涉及了重氯化、偶合、各种缩合及金属络合等。详细阐述了各类反应的工艺条件和特点。含氟活性基和溴代丙烯酰胺活性基的染料将成为开发热点。有16篇参考文献。 相似文献
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以次磷酸钠为还原剂,合成了还原染料中间体苯绕蒽酮,并对合成工艺进行了优化。优化条件为:n(甘油)∶n(蒽醌)=1.5∶1,反应温度为120~125℃,保温1 h。在此条件下,目标产物纯度符合标准要求。采用熔点测定、红外光谱(IR)、液相色谱(HLPC)进行分析和结构表征。 相似文献
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Tzi-Yi Wu Ming-Hsiu Tsao Fu-Lin Chen Shyh-Gang Su Cheng-Wen Chang Hong-Paul Wang Yuan-Chung Lin Wen-Chung Ou-Yang I-Wen Sun 《International journal of molecular sciences》2010,11(1):329-353
New organic dyes comprising carbazole, iminodibenzyl, or phenothiazine moieties, respectively, as the electron donors, and cyanoacetic acid or acrylic acid moieties as the electron acceptors/anchoring groups were synthesized and characterized. The influence of heteroatoms on carbazole, iminodibenzyl and phenothiazine donors, and cyano-substitution on the acid acceptor is evidenced by spectral, electrochemical, photovoltaic experiments, and density functional theory calculations. The phenothiazine dyes show solar-energy-to-electricity conversion efficiency (η) of 3.46–5.53%, whereas carbazole and iminodibenzyl dyes show η of 2.43% and 3.49%, respectively. 相似文献
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吡唑啉酮型通用染料的合成与应用研究 总被引:2,自引:2,他引:2
以1=(2,5-二氯-4-磺酸基苯基)-5-甲基-5-吡唑啉酮为起始原料、经过一系列反应合成了一支吡唑啉酮型黄色通用染料。希望不需在染浴之外进行其它的化学反应就能用它对不同类型的织物进行染色。这是一个五步合成反应、包括重氮化偶合反应,氯置换反应,缩合反应,水解反应,缩合反应。实验中对第二步和第四步的反应工艺进行了改进,改进工艺后使两步反应的操作简化,成本降低,收率提高合成的染料以三聚氯氰为活性基,该染料及中间体的化学结构,通过^1H核磁共振谱、质谱和红外光谱分析得以表征,在中性染浴中,合成的染料可用于羊毛,丝绸,尼龙,涤纶纤维染色:通过加入N,N-二甲基乙二胺调节pH值为5,可对腈纶纤维进行染色。染料在纤维上的日晒和水洗牢度测试结果表明,染料在晴纶上的日晒、水洗牢度较低:在羊毛、丝绸上有中等的牢度性能;在涤纶、尼龙上日晒牢度较低.水洗牢度较高。 相似文献
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本文以苯甲酸为原料,经酰氯化生成苯甲酰氯,再与间苯二酚反应生成中间体2,4-二羟基二苯甲酮,产率79.4%。然后以2,4-二羟基二苯甲酮为封闭基,对位酯为重氮组分合成了黄、橙、红和蓝色4只新结构的活性染料,并用质谱对其结构进行了表征。用合成的染料对棉纤维染色,测定了染料的上染率和固色率,黄色染料染色性能较差。与未染色的棉纤维相比,染色后棉纤维的紫外线透过率大大降低。未染色纤维UPF值为1.3,经过黄、橙、红和蓝色染料染色的棉纤维的UPF值分别为6.1、16.1、16.0、18.5,除黄色外都达到了很好的抗紫外线效果。 相似文献
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通过将有色基团"嫁接"到醛类化合物的α-C上的方式,设计合成9只以醛基为反应基团的活性染料,通过FTIR、UV-Vis、MS对其结构进行表征。以铝鞣白湿皮为底物进行了应用实验,并测量了上染时的4个染色特征值,即S值(直接性值)、E值(吸尽值)、F值(固色值)和R值(反应活性值)。结果表明,与常用活性染料相比,该类活性染料能够在温和条件下(35~40℃,p H=4.0~6.5),于1.5 h内将皮革着色;染色产物耐水洗牢度都在4级以上,具备了活性染料特征。醛基活性染料不存在水解问题,染色过程中也不需要加入中性盐,符合节能减排要求。 相似文献
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The synthesis of the title complexes was achieved via the reaction of
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-cyclopentadienyliron cations with 4,4′-bis(4-hydroxyphenyl)valeric acid to produce the diiron complexes which were then reacted with a number of arylazo dyes to give cationic bis(cyclopentadienyliron)arene complexes containing the arylazo dyes. These iron-containing monomers were subsequently polymerized via nucleophilic aromatic substitution using 1,8-octanedithiol, 4,4′-thiobisbenzenethiol, or bisphenol A to produce the desired coloured cationic organoiron polymers. The weight – average molecular weights were estimated to range from 11,800 to 31,600. UV–vis studies conducted in dimethylformamide (DMF) showed that the metallated polymers exhibited
of 412–491 nm. Addition of HCl to the polymer solution caused a bathochromic shift into the range of 515–530 nm. Thermogravimetric analysis (TGA) revealed that the iron moieties were cleaved between 205 and 248 °C while the polyether/thioether backbone degraded between 380 and 613 °C. Differential scanning calorimetry (DSC) showed that the polymers exhibited glass transition temperatures (Tg) ranging from 106 to 184°C.This paper is dedicated to Professor Richard J. Puddephatt in recognition of his outstanding contribution to the field of metal-containing polymers. 相似文献