Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 25, Issue 37, Pages 6009-6017Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201503071
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Funding
- NSFC [50873051, 205333050]
- MOST [2007AA03Z307]
- Transregional Project [TRR61]
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A novel strategy for highly sensitive detection and discrimination of explosives is developed based on the metal-organic polyhedra (MOP)-decorated plasmonic substrate. It is found that the careful selection of the geometric and electronic characteristics of the assembly units (organic ligands and unsaturated metals sites) embedded within the MOP cage allows for the integration of multiple weak molecular interactions in a controllable fashion and thus the MOP cage can serve as an excellent receptor for selective uptake and binding of explosives. By further grafting of the MOP cage onto a plasmonic substrate with good surface-enhanced Raman scattering enhancement factor, the resulting sensor shows a good sensing capability to various groups of ultratrace explosives, especially the challenging aliphatic nitro-organics.
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