Pyridinium-based symmetrical diamides as chemosensors in visual sensing of citrate through indicator displacement assay (IDA) and gel formation

The design and synthesis of pyridinium-based symmetrical diamides 1 and 2 along with their anion binding studies through 'indicator-diplacement assay' are reported. Both the chemosensors effectively respond in in CH3CN-H2O (4: 1 v/v) at pH= 6.3 for the selective naked-eye detection of citr...

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Published inOrganic & biomolecular chemistry Vol. 9; no. 19; pp. 6551 - 6558
Main Authors Ghosh, Kumaresh, Sarkar, Avik Ranjan
Format Journal Article
LanguageEnglish
Published CAMBRIDGE Royal Soc Chemistry 07.10.2011
Subjects
Chemistry
Chemistry, Organic
Citric Acid - analysis
Diamide - chemical synthesis
Diamide - chemistry
Fluorescent Dyes - chemical synthesis
Fluorescent Dyes - chemistry
Gels - chemical synthesis
Gels - chemistry
Molecular Structure
Physical Sciences
Pyridinium Compounds - chemistry
Science & Technology
Spectrometry, Fluorescence
Stereoisomerism
ENSEMBLE
PHOSPHATE
ORGANOGELS
DESIGN
TEACHING OLD INDICATORS
SELECTIVE DETECTION
BINDING
SYNTHETIC RECEPTOR
FLUORESCENT CHEMOSENSOR
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Summary:The design and synthesis of pyridinium-based symmetrical diamides 1 and 2 along with their anion binding studies through 'indicator-diplacement assay' are reported. Both the chemosensors effectively respond in in CH3CN-H2O (4: 1 v/v) at pH= 6.3 for the selective naked-eye detection of citrate. Additionally, chemosensor 2 (c = 6.29 x 10(-3) M) forms a stable gel only with citrate in CH3CN, which validates its visual sensing.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1477-0520
1477-0539
DOI:10.1039/c1ob05707c