Two-dimensional ion–molecule chelation reaction (2D-IMCRs) to form a two-dimensional dual optical sensor (2D-DOS): synthesis and application of Phen-SnO2 nanosheets for the fluorometric and colorimetric sensing of nitroaromatic explosives

Organic precursor-modulated fluorescent 2D Sn-nanosheets are investigated for the selective detection of picric acid. The findings have potential for the environmental monitoring of nitroaromatic compounds.