一种双响应范围pH荧光探针的合成与性能 |
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引用本文: | 刘甜,罗茜煜,黄子杰,郑祯凯,欧芷褀,马立军.一种双响应范围pH荧光探针的合成与性能[J].华南师范大学学报(自然科学版),2020,52(2):41-45. |
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作者姓名: | 刘甜 罗茜煜 黄子杰 郑祯凯 欧芷褀 马立军 |
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作者单位: | 华南师范大学化学学院,广州 510006 |
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基金项目: | 广东省自然科学基金;广州市科技计划 |
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摘 要: | 以芘甲醛和3,4-二羟基苯甲醛为原料,设计合成了一种可以同时检测酸性和碱性范围的pH荧光探针,并通过核磁、质谱对其结构进行了表征.结果表明:在二甲基亚砜(体积分数30%)的缓冲溶液中,该探针对pH < 6.0和pH>9.5范围内的pH检测都有比色和荧光响应,pKa分别为4.69和10.40,而相同条件下探针对其他离子几乎无类似的识别现象.因此,该探针对酸性和碱性范围内的pH检测具有明显的特异性识别响应.
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关 键 词: | 3 4-二羟基苯甲醛 双响应 pH探针 |
收稿时间: | 2019-07-10 |
The Synthesis and Properties of a pH Fluorescent Probe with Dual-Responsive Ranges |
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Institution: | School of Chemistry, South China Normal University, Guangzhou 510006, China |
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Abstract: | A pH fluorescent probe capable of detecting both acidic and alkaline ranges was designed and synthesized from pyrene-1-carboxaldehyde and 3, 4-dihydroxybenzaldehyde. The spectroscopic experiment results show that in dimethyl sulfoxide (volume fraction being 30%) aqueous solution, the probe has colorimetric and fluorescence responses for detecting pH in both pH < 6.0 and pH>9.5, the pKa values being 4.69 and 10.40, respectively, while there is almost no similar recognition of other ions under the same conditions. Therefore, the probe has a specific recognition response for pH detection in the acidic and alkaline ranges. |
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