Journal
TETRAHEDRON LETTERS
Volume 55, Issue 38, Pages 5290-5293Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2014.07.098
Keywords
Fluorophore; Nitroaromatics; Picric acid; Turn-off sensor
Categories
Funding
- UGC-India
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Triphenylamine based, dumbbell shaped, highly fluorescent compound 1 was designed and synthesized. Compound 1 showed blue emission with quantum efficiency as high as 0.78 in benzene solution. Compound 1 showed turn-off sensitivity to picric acid, which is a common constituent of many powerful explosives and unavoidable environmental threats. The turn-off sensitivity to picric acid is attributed to the excited state charge transfer from compound 1 to picric acid. Compound 1 selectively senses picric acid with a detection limit of similar to 400 ppb. (C) 2014 Elsevier Ltd. All rights reserved.
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