LAUSR

Anthrax spores have been a determining risk to human beings and animals across the world. As such, the qualitative monitoring towards dipicolinic acid (DPA), the unique biomarker of bacillus anthracis, is highly desired and being moved forward in health management. Herein, a breathing zeolite-like supramolecular assembly (ZSA), with sra topology and 1D hexagon channel is designed by controlling the bridging angle of ditopic ligand after systematic analysis in topological. The solvent dependent dynamic behavior is illustrated by powder X-ray diffraction and reflected in tunable luminescent emission based on solvent polarity parameters. According to the structural result and theoretical analysis, the Eu3+ is anchored within the framework to form a ratiometric luminescent sensor successfully due to the abundant potential active site. After DPA addition, the resulting composite shows a sensitive and selective response in the linear range of 0-7.0 μM stemmed from absorbance energy-transfer emission and preferential coordination. The work we presented here may enrich the sensing platforms containing lanthanide and expand potential application of ZSAs in clinical analysis.