Ratiometric fluorescence sensing of bacterial lipopolysaccharide by a simple combination of a cationic dye and an anionic dye

Two cationic fluorophore coralyne and one anionic fluorophore 9,10-anthracenediyl-bis(methylene)dimalonic acid can form 2:1 ion pair complex in aqueous solutions. The complex experiences dissociation along with significant changes in fluorescence profile in the presence of bacterial lipopolysacchari...

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Published inSensors and actuators. B, Chemical Vol. 166-167; pp. 853 - 858
Main Authors Lei, Wanhua, Jiang, Guoyu, Zhou, Qianxiong, Hou, Yuanjun, Zhang, Baowen, Cheng, Xuexin, Wang, Xuesong
Format Journal Article
LanguageEnglish
Published Elsevier B.V 20.05.2012
Subjects
Anionic dye
aqueous solutions
Bacteria
Cationic dye
detection limit
dissociation
Fluorescence
Fluorescence chemosensor
Lipopolysaccharide
lipopolysaccharides
Ratiometric
Lipopolysaccharide
Fluorescence chemosensor
Cationic dye
Anionic dye
Ratiometric
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Summary:Two cationic fluorophore coralyne and one anionic fluorophore 9,10-anthracenediyl-bis(methylene)dimalonic acid can form 2:1 ion pair complex in aqueous solutions. The complex experiences dissociation along with significant changes in fluorescence profile in the presence of bacterial lipopolysaccharide, which is utilized to sensitively and selectively detect the bacterial lipopolysaccharide in ratiometric fluorescence mode with the detection limit down to submicromolar concentration.
Bibliography:http://dx.doi.org/10.1016/j.snb.2012.03.017
ObjectType-Article-2
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content type line 23
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2012.03.017