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Paper-based sensing of phytotoxicant gossypol in aqueous media through turn-on visible-light emitting
1Department of Organic Chemistry, Indian Institute of Science, Bangalore, Karnataka 560012, India. maitra@iisc.ac.in.
Abstract:
Gossypol, a phytotoxicant in cotton-seed oil, has been found to sensitize Tb(III)-luminescence in a supramolecular hydrogel. Based on this observation, a paper-based sensor has been developed to detect gossypol with a limit of detection (LOD) of 2.9 nM. This is the first report of water-based detection with the highest sensitivity involving turn-on time-gated luminescence. This method was also able to sense gossypol in commercial crude cotton-seed oil.

