臺灣國際科展

仲夏夜裡的精靈-探討發光胺之化學發光反應與催化劑之作用

科展類別
臺灣國際科展
屆次
2002年
科別
化學科
學校名稱
臺北市立大直高級中學
指導老師
惠沁宜、王忠茂
作者
王怡婷、潘奕呈
關鍵字
發光胺,發光反應,催化劑
備註
儲備代表

摘要或動機

過去,螢光的使用只局限於釣魚、登山等無法使用電燈或火把時使用的一種較為安全的冷光。而今,我們使用這種化學發光的機會也越來越多,也再成了更多的汙染,所以我們想藉此去研討有關螢光棒之化學反應與其反應之改良。在這一篇報告當中,我們討論與研究有關Luminol發光之反應與催化劑對其反應之影響;比較在380nm~480nm範圍內不同波長所產生之光度及比較各種不同催化劑在相同波長的發光度隨反應時間的變化。我們發現在此反應之中,以k3Fe(CN)6可以產生出最大的亮度,且由實驗的結果得知Luminol的發光無法維持兩分鐘,發光時間較為短暫。映之催化效果是同時被金屬離子和根離子影響。具有明顯催化效果(最大光度超過2.5)的鹽類濃度以稀薄為佳,約10-3M。在此反應中以k3Fe(CN)6為其催化劑,可以產生一種穩定且明亮的發光,是一種較佳的催化劑在此化學發光反應之中。In the past, fluorescence was limited in being used in fishing or hiking, in which light or a torch was not available. Fluorescence is much safer because of its feature of luminescence. Today, the opportunities we use this fluorescence become more and more. The more people will use fluorescence. The more environment pollution will be caused, that is the reason we would like to study the chemical reaction of fluorescence and its solution to reduce pollution. In this paper, chemical reactions between the Luminol and different catalysis agents are studied, the comparisons between the reaction condition of the catalysis agents and the Luminol, to measure the light intensity variation in 350-500nm light wavelength range. And to measure the light intensity variation following the time of the chemical reactions between the Luminol and different catalysis. We found out that the chemical reactions between the Luminol and k3Fe(CN)6 being the catalysis agents can produce the maximum light strength. But the time of the chemical reactions is much shorter, it only can keep this chemical reactions operating in two minutes. The chemical reaction’s catalysis agent is affected by metallic ion and SO4(2-) , NO3(1-),Cl(1-), when the catalysis agent’s concentration is sparely, this luminous reaction is more obvious( the maximum light strength is over 2.5) .It can produce a fluorescence which is steady and luminous, and it is better to become the catalysis agent material of the fluorescent chemical reactions.


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