Fast detection of nitroaromatics using phosphonate pyrene motifs as dual chemosensors

abstract

A new class of dual fluorescent chemosensors for nitroaromatic compounds (NACs) based on phosphonated pyrene derivatives is reported, showing high selectivity towards trinitrotoluene (TNT). The strong intermolecular interactions (pi-pi stacking and hydrogen bonding) allow high fluorescence quenching with visual detection in short response times.

keywords

CHEMICAL SENSORS; THIN-FILMS; EXPLOSIVES; TRINITROTOLUENE; EXCIMER; RDX; TNT

subject category

Chemistry

authors

Venkatramaiah, N; Firmino, ADG; Paz, FAA; Tome, JPC

our authors

acknowledgements

We would like to thank Fundacao para a Ciencia e a Tecnologia (FCT, Portugal), the European Union, QREN, FEDER through the COMPETE program, QOPNA research unit (project PEst-C/QUI/UI0062/2013; FCOMP-01-0124-FEDER-037296) and CICECO associated Lab (PEst-C/CTM/LA001112013; FCOMP-01-0124-FEDER-037271) for their general funding scheme. We further wish to thank FCT for funding the R&D project (EXPL/CTM-NAN/0013/2013; FCOMP-01-0124-FEDER-041282). The authors acknowledge FCT for the post-doctoral and doctoral grants SFRH/BPD/79000/2011 (to NVR) and SFRH/BD/84495/2012 (to ADGF). We thank Prof. Satish Patil, SSCU, Indian Institute of Science (IISc), Bangalore, for useful discussions.

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