School of Applied Chemical Engineering, Chonnam National University, Gwangju 500-757, Republic of Korea.
Department of Chemistry and Institute of Basic Science, Chonnam National University, Gwangju 500-757, Republic of Korea.
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Mar 25;122:304-8. doi: 10.1016/j.saa.2013.11.035. Epub 2013 Nov 21.
For developing intramolecular charge transfer (ICT) chemosensors for low pH values, 2-{2-[4-(dimethylamino)phenyl]-6-methyl-4H-pyran-4-ylidene}malononitrile (DPM) was designed and synthesized. The spectroscopic and pH-sensing properties of DPM were investigated by UV-Vis and fluorescence spectroscopy. This sensor exhibited a pH-dependent ratiometric absorption property in the range of pH 0-3, along with a reversible color change from yellow to colorless with increasing acid concentration. The fluorescence intensity of the sensor was increased with increasing pH within the pH range of 0-2.
为了开发用于检测低 pH 值的分子内电荷转移（ICT）化学传感器，设计并合成了 2-{2-[4-(二甲基氨基)苯基]-6-甲基-4H-吡喃-4-亚基}丙二腈（DPM）。通过紫外可见光谱和荧光光谱研究了 DPM 的光谱和 pH 传感性质。该传感器在 pH 值为 0-3 的范围内表现出与 pH 值相关的比率吸收特性，并且随着酸浓度的增加，颜色从黄色变为无色，呈现出可逆的颜色变化。在 pH 值为 0-2 的范围内，传感器的荧光强度随 pH 值的增加而增加。
