Issue 47, 2012

Sensitive detection of hazardous explosivesvia highly fluorescent crystalline porous aromatic frameworks

Abstract

A three-dimensional (3D) porous aromatic framework (PAF-14) with high fluorescence quantum yield was synthesized from luminescent monomer of tetra(4-dihydroxyborylphenyl)germanium (TBPGe) building blocks. The powder X-ray diffraction (PXRD) analysis of the experimental and simulated patterns indicate that PAF-14 is highly crystalline with ctn topology. The Argon sorption measurement indicates that PAF-14 possesses high surface area (Brunauer Emmet Teller surface area: 1288 m2 g−1). Significantly, the introduction of germanium into PAF-14 skeletons may bring about a low-lying lowest unoccupied molecular orbital (LUMO) and the crystalline polymeric backbones enhance the sensitivity of electron delocalization. Therefore the designed PAF-14 exhibits high fluorescence quenching ability for hazardous explosives, such as nitrobenzene, 2,4-DNT (2,4-dinitrotoluene) and TNT (2,4,6-trinitrotoluene).

Graphical abstract: Sensitive detection of hazardous explosives via highly fluorescent crystalline porous aromatic frameworks

Supplementary files

Article information

Article type
Paper
Submitted
09 Aug 2012
Accepted
11 Sep 2012
First published
11 Sep 2012

J. Mater. Chem., 2012,22, 24558-24562

Sensitive detection of hazardous explosives via highly fluorescent crystalline porous aromatic frameworks

Y. Yuan, H. Ren, F. Sun, X. Jing, K. Cai, X. Zhao, Y. Wang, Y. Wei and G. Zhu, J. Mater. Chem., 2012, 22, 24558 DOI: 10.1039/C2JM35341E

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