title: Attogram detection of picric acid by hexa-peri-hexabenzocoronene-based chemosensors by controlled aggregation-induced emission enhancement.
abstract: Hexa-peri-hexabenzocoronene (HBC) based molecules 5 and 6 have been designed and synthesized. These planar coronenes are appended with rotors to invoke aggregation induced emission enhancement (AIEE) phenomenon by controlling the ratio of H2O in solutions of aggregates. These aggregates of HBC derivatives serve as highly selective chemosensors for picric acid (PA) in mixed aqueous solution. These aggregates are also able to detect PA in vapor phase. In addition, fluorescent test strips have been prepared by dip-coating the Whatman paper with aggregates of both compounds for trace detection of PA in contact mode with detection limits in attograms.
authors.affiliation: Department of Chemistry, UGC Centre for Advanced Studies, Guru Nanak Dev University, Amritsar (Punjab), India.
authors.forename: Varun
authors.initials: V
authors.lastname: Vij
authors.forename: Vandana
authors.initials: V
authors.lastname: Bhalla
authors.forename: Manoj
authors.initials: M
authors.lastname: Kumar