Synthesis, complexation, and fluorescence behavior of 3,4-dimethylthieno[2,3-b]thiophene carrying two monoaza-15-crown-5 ether groups |
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| Authors: | Wu Yong Xiang Cao Jing Deng Hai Yan Feng Jun Xiang |
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| Affiliation: | aCollege of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, People's Republic of China;bKey Laboratory of Enviromentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, People's Republic of China |
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| Abstract: | A novel fluoroionophore 1 based on 3,4-dimethylthieno[2,3-b]thiophene bearing two monoaza-15-crown-5 ethers at 3- and 4-positions was prepared. UV–vis and fluorescence responses of compound 1 upon the addition of alkali and alkaline earth metal cations were evaluated in acetonitrile solution. Receptor 1 showed unique response for Ba2+ due to the formation of an intramolecular sandwich complex. |
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| Keywords: | Fluorescent chemosensor Monoaza15-crown-5 ether Thieno[2,3-b]thiophene Ba2+ Intramolecular sandwich complex |
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