李清泉,沈 静,唐 灿,张征宇,王恩举*.基于苯并噻唑腙的铜离子荧光探针[J].海南师范大学学报自科版,2019,32(1):39-42 |
基于苯并噻唑腙的铜离子荧光探针 |
A Turn-on Fluorescent Probe for Cu2+ Based on Benzothiazole-2-ylhydrazone |
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DOI:10.12051/j.issn.1674-4942.2019.01.007 |
中文关键词: 荧光探针 2,4-二甲氧基苯甲醛 2-肼基苯并噻唑 铜离子 |
英文关键词: fluorescent probe 2-hydrazinylbenzothiazole 2,4-dimethoxybenzaldehyde copper ion |
基金项目:海南省自然科学基金(20162028);大学生创新训练计划项目 |
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中文摘要: |
铜是生命必需微量元素,是许多金属酶发挥催化作用的辅因子,同时,过量摄入铜能引
起许多神经退行性疾病。因此,方便、快速地检测铜离子非常有价值。通过缩合2,4-二甲氧基苯
甲醛与2-肼基苯并噻唑合成了一个可以高选择性识别铜离子的荧光探针,反应简单,产率较高,具
有一定的实用价值。在乙腈/HEPES缓冲溶液中(pH = 7.0),探针没有荧光,加入铜离子能引起发射
强度显著增加,发出明亮的蓝色荧光,其它常见金属离子不能引起探针的发射光谱发生明显变化,
而且对铜离子的检测没有影响。Job曲线研究表明二者形成了1:1的络合物。 |
英文摘要: |
Copper is an essential trace element necessary for all organisms. It plays an important role as a catalytic cofac⁃
tor for a broad range of metalloenzymes. Nevertheless, copper overload is associated with many neurodegenerative diseases
including Alzheimer diseases. A novel fluorescent probe was developed by incorporating 2,4-dimethoxybenzaldehyde and
2-hydrazinylbenzo [d] thiazole for the detection of Cu2+
. In MeCN/HEPES buffer solution, the probe exhibited a pronounced
Cu2+
-selective fluorescence enhancement over other common metal ions. The bright blue fluorescence provides the nakedeye detection of Cu2+
. The 1:1 stochiomety of the complex was determined by Job's plot. |
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