In this article, a new benzoimidazole based Zn2+ fluorescence sensor DABI has been prepared. The sensor displays a rapid and a linear response to Zn2+ with a red-shifted 100-fold turn-on signal from the dark background. The presence of other metal ions especially Cd2+ does not interfere with its Zn2+ response. Molecular modeling study suggests that the Zn2+-induced red shift of emission and fluorescence turn-on of DABI could be correlated to the coplanation of two aryl planes of 2-aryl substituted benzoimidazole. (C) 2011 Elsevier B.V. All rights reserved.
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Thammasat Univ, Dept Chem, Med Chem Res Unit, Pathum Thani, ThailandThammasat Univ, Dept Chem, Med Chem Res Unit, Pathum Thani, Thailand
Chantalakana, Khwanchanok
Choengchan, Nathawut
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King Mongkuts Inst Technol Ladkrabang, Dept Chem, Appl Analyt Chem Res Unit, Bangkok 10520, ThailandThammasat Univ, Dept Chem, Med Chem Res Unit, Pathum Thani, Thailand
Choengchan, Nathawut
Yingyuad, Peerada
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Kasetsart Univ, Dept Chem, Bangkok 10900, ThailandThammasat Univ, Dept Chem, Med Chem Res Unit, Pathum Thani, Thailand
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Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Peoples R ChinaJiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Peoples R China
Liu, Jingjing
Liu, Hongliang
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Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Peoples R ChinaJiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Peoples R China
Liu, Hongliang
Pu, Shouzhi
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Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Peoples R ChinaJiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Peoples R China