摘要
用偶氮二异丁腈作引发剂，使Ｎ－乙烯基咔唑和丙烯酸甲酯在苯中共聚合，该共聚物在四氢呋喃中用氢氧化钠水溶液水解，得到水溶性乙烯基咔唑－丙烯酸共聚物。该共聚物的水溶液在３７３ｎｍ处产生较强的荧光，其荧光强度随溶液ｐＨ值增大而增强，在该高分子水溶液中，加入少量阳离子表面活性剂，其量子产率可提高７倍，微量重金属离子（Ｈｇ（２＋））对荧光有一定的熄灭作用。荧光强度（ｌｏｇＩ０／Ｉ）与Ｈｇ（２＋）的浓度呈线性关系。
A linear copolymer of methyl acrylate and N-vinylcarbazole was prepared in ben-zene using AIBN as an initiator and then hydrolyzed in NaOH aqueous solution. The fluores-cence intensities of the aqueous solution of the hydrolyzed water soluble copolymer increasewith the increase of the pH value and the concentration of the cationic surfactant. Mercuryions(Hg(2+))showed a certain quenching effect on the fluorescene of the copolymer aqueoussolution. The concentration of Hg(2+)is in a linear relationship with the fluorescence intensity(logI0/I)of the polymer solution, that may be used to determine the trace amount of mer-cury by fluorescence quenching method.
出处
《应用化学》
CAS
CSCD
北大核心
1994年第2期110-112,共3页
Chinese Journal of Applied Chemistry
基金
内蒙古自然科学基金资助项目
关键词
荧光
乙烯基咔唑
丙烯酸
共聚物
fluorescence,N-vinyl carbazole,acrylic acid,copolymer
