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大连理工大学化学系 精细化工国家重点实验室
收稿:2011-03-11,
修回:2011-4-25,
网络首发:2011-09-22,
纸质出版:2011-09-22
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张亚男, 杨林林, 周硼, 段春迎. 磷酸二氢根离子对香豆肼化合物的高选择性荧光增强[J]. 发光学报, 2011,32(9): 962-967
ZHANG Ya-nan, YANG Lin-lin, ZHOU Peng, DUAN Chun-ying. Fluorescent Emission of Coumaric Aldehyde Molecule Enhanced by Dihydrogen Phosphate[J]. Chinese Journal of Luminescence, 2011,32(9): 962-967
设计合成了荧光探针N
N-二乙基氨基香豆素-3-肼基-2
4-二硝基苯肼(DC)。光谱滴定实验显示
H
2
PO
4
-
与DC能够以1: 1的化学计量比形成配合物。进一步的实验发现
和相同含量的DC溶液相比
该配合物溶液的相对光致荧光强度显著增强
同时伴有紫外吸收光谱红移
溶液颜色由橙黄色迅速变为紫色。其它阴离子
如 F
-
、NO
3
-
、Cl
-
、Br
-
、I
-
等对DC 溶液的相对荧光强度及紫外吸收光谱没有影响。利用DC对H
2
PO
4
-
具有灵敏选择性的特征
可把N
N-二乙基氨基香豆素-3-肼基-2
4-二硝基苯肼作为荧光探针
借助于荧光光谱和紫外-可见吸收光谱两种手段
实现对H
2
PO
4
-
离子的快速识别。
paper
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