共查询到16条相似文献,搜索用时 43 毫秒
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结晶紫内酯(CVL)的合成可分为2步:首先合成无色结晶紫内酯(LCVL),然后将LCVL氧化成CVL.介绍了以米氏醇工艺为主的合成方法,详细研讨了米氏醇和间二甲基氨基苯甲酸的合成方法,并讨论了反应条件对反应的影响. 相似文献
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文章主要制备了以结晶紫内酯为发色剂的复配物,研究了这些复配物的热色性能,并对部分典型复配物作了DSC检测,及对热致变色复配物的变色机理进行了探讨。 相似文献
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We have investigated the Hg2+ transport from Crystal Violet Lactone to Fluoran dye based on the association constant, Kass. Upon addition of Hg2+, the Crystal Violet Lactone shows a new peak at around 603 nm, and the color of the solution changed from colorless to blue. With the addition of Fluoran dye in this solution containing Crystal Violet Lactone and Hg2+, the absorption intensity of Fluoran dye at 447 nm and 586 nm was all increased. So the color of solution gradually became black from blue color. From the changes of the ratio A586/A447, it is apparent that the Hg2+ in Crystal Violet Lactone-Hg2+ was transported to colored Fluoran. The Hg2+ transport from Crystal Violet Lactone to Fluoran dye was also carried out by the calculation of the association constant: the binding ability for the complex formation of Fluoran dye and Crystal Violet Lactone-Hg2+ is much greater in CH3CN solution (Kass = 3.0 × 104 M−1) than that of the Crystal Violet Lactone with Hg2+ (Kass = 1.2 × 103 M−1). 相似文献
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Selective interaction between Crystal Violet Lactone and Fe3+/Fe2+ in methanol leads to a reversible ionochromic colour change. This interaction can be controlled electrochemically, in order to achieve reversible colour changes with high contrast between colourless and dark blue solutions. The presented system is proposed as an alternative electrochromic solution. 相似文献
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采用荧光光度法测定水产品中结晶紫残留量。样品在pH=5.00的H3PO4-NaOH缓冲液中,激发波长为530nm、吸收波长为600nm的条件下测定荧光值,在1.00×10^-6g/mL~1.00×10^-11g/mL范围内,有良好的线性,相关系数R=0.9996;检出限为1.58×10^-12g/mL;回收率在95.0%-98.0%之间。本法具有操作方便、检出限低、较高的重现性及准确性等特点,是一种良好的分析检测方法。 相似文献
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