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Metal–Organic Polyhedra Cages Immobilized on a Plasmonic Substrate for Sensitive Detection of Trace Explosives
Author(s) -
Wang Chen,
Shang Jin,
Lan Yue,
Tian Tian,
Wang Hui,
Chen Xi,
Gu JingYing,
Liu Jefferson Zhe,
Wan LiJun,
Zhu Wei,
Li Guangtao
Publication year - 2015
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201503071
Subject(s) - materials science , explosive material , substrate (aquarium) , plasmon , explosive detection , raman scattering , polyhedron , nanotechnology , raman spectroscopy , chemical engineering , optoelectronics , optics , organic chemistry , chemistry , oceanography , physics , geometry , mathematics , geology , engineering
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.