摘要
本文合成了三种新的有机荧光试剂：４ＣＲＡＣＰ—Ⅱ，４ＢＲＡＣＰ—Ⅲ，４ＩＲＡＣＰ—Ⅳ，确证了其结构，研究了荧光性质，发现Ⅱ在弱酸性介质中具有较强的荧光。ｐＨ＝５．３时，它与Ｃｕ（Ⅱ）形成荧光络合物，λ＿（ｅｘ）／λ＿（ｅｍ）＝３１０ｎｍ／４０８ｎｍ，检测限５×１０￣（－４）μｇ／ｇ。讨论了卤素对￣１ＨＮＭＲ、ＭＳ及Ｆ的影响。
In this paper, we have synthesized three kinds of new organic fluorescencereagents: 4CRACP Ⅱ, 4B RACPⅢ. 4IRACP Ⅳ,Its structures were identifiedand fluorescence properties were studied. We find 4CRACP-Ⅱ has more intense fluo-rescence in the weak acid medium。 It reacts with copper(Ⅱ)at pH=5.3 to form fluo-rescenta coplex,λ_(ex)/λ_(em)=310nm/408nm. the detection limit was 0.5ng/g, we discussedthe influence of halogen on ￣1H-NMR. MS.F.
基金
国家自然科学基金
关键词
绕丹宁
卤代
羧基苯偶氮
荧光试剂
Rhodanine,5-(4′-Halogen-2′-Carboxyl-phenylazo )-rhodanine,fluorescence reagent.
