2-{2-[4-(Dimethylamino)phenyl]-6-methyl-4H-pyran-4-ylidene}malononitrile: A colorimetric and fluorescent chemosensor for low pH values

被引：13
|
作者：
Kim, Dae-Young [1 ]
Kim, Jae Nyoung [2 ,3 ]
Kim, Hyung Jin [1 ]
机构：
[1] Chonnam Natl Univ, Sch Appl Chem Engn, Kwangju 500757, South Korea
[2] Chonnam Natl Univ, Dept Chem, Kwangju 500757, South Korea
[3] Chonnam Natl Univ, Inst Basic Sci, Kwangju 500757, South Korea
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2014年 / 122卷
关键词：
Intramolecular charge transfer (ICT); Push-pull conjugate; pH sensor; Fluorescence sensor; SENSORS; DESIGN; FAMILY; PROBES;
D O I：
10.1016/j.saa.2013.11.035
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
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. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：304 / 308
页数：5
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