Journal
JOURNAL OF LUMINESCENCE
Volume 199, Issue -, Pages 302-309Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2018.03.042
Keywords
Pyrene based sensor; Naked eye copper sensing; Turn on fluorescence; AIE (aggregation induced emission); CAC (critical aggregate concentration); Antioxidant
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Funding
- Science and Engineering Research Board, DST, Government of India (SERB) [SR/ FT/CS-116/2010]
- University Grant Commission (UGC), New Delhi, India [43-243/2014 (SR), MRP-MAJORCHEM-2013-37991]
- UGC, Government of India for Senior Research Fellowship
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The Copper ion recognition ability of a pyrene based sensor (1) was explored. A selective Cu2+ ion induced colorimetric naked eye changes and a turn on emission was observed in acetonitrile medium. The results were monitored through UV-vis spectrophotometry, steady state emission and fluorescence life time studies. The outcome revealed a selective and sensitive Cu2+ recognition with a detection limit of 2.5x10(-6) M. The compound exhibited aggregation induced emission (AIE) in water-acetonitrile mixture where its critical aggregate concentration was measured by tensiometry at the solvent fraction of maximum AIE. Moreover the compound exhibited an antioxidant nature in DPPH (2,2-diphenyl-1-picrylhydrazyl) assay.
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