title: Hexaphenylbenzene-based fluorescent aggregates for ratiometric detection of cyanide ions at nanomolar level: set-reset memorized sequential logic device.
abstract: A hexaphenylbenzene-based receptor 3 has been synthesized that forms a fluorescent spherical aggregate in mixed aqueous media due to its aggregation-induced emission enhancement attributes. These fluorescent spherical aggregates show ratiometric response toward cyanide ions via nucleophilic addition and undergo deaggregation to form smaller nanoaggregates. In addition, the solution-coated paper strips of 3 can detect cyanide ions in the range of ∼2.6 ng/cm(2), thus, providing a simple, portable, and low-cost method for detection of cyanide ions in aqueous media. Receptor 3 also behaves as a set-reset memorized sequential logic circuit with chemical inputs of CN(-) ions and trifluoroacetic acid or H(+) (pH ≤ 3).
authors.affiliation: Department of Chemistry, UGC Sponsored Centre for Advanced Studies-1, Guru Nanak Dev University , Amritsar-143005, Punjab, India.
authors.forename: Subhamay
authors.initials: S
authors.lastname: Pramanik
authors.forename: Vandana
authors.initials: V
authors.lastname: Bhalla
authors.forename: Manoj
authors.initials: M
authors.lastname: Kumar