刘甜, 罗茜煜, 黄子杰, 郑祯凯, 区芷琦, 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. doi: 10.6054/j.jscnun.2020025
引用本文: 刘甜, 罗茜煜, 黄子杰, 郑祯凯, 区芷琦, 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. doi: 10.6054/j.jscnun.2020025
LIU Tian, LUO Qianyu, HUANG Zijie, ZHENG Zhenkai, OU Zhiqi, MA Lijun. The Synthesis and Properties of a pH Fluorescent Probe with Dual-Responsive Ranges[J]. Journal of South China Normal University (Natural Science Edition), 2020, 52(2): 41-45. doi: 10.6054/j.jscnun.2020025
Citation: LIU Tian, LUO Qianyu, HUANG Zijie, ZHENG Zhenkai, OU Zhiqi, MA Lijun. The Synthesis and Properties of a pH Fluorescent Probe with Dual-Responsive Ranges[J]. Journal of South China Normal University (Natural Science Edition), 2020, 52(2): 41-45. doi: 10.6054/j.jscnun.2020025

一种双响应范围pH荧光探针的合成与性能

The Synthesis and Properties of a pH Fluorescent Probe with Dual-Responsive Ranges

  • 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.

     

    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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