Metal-organic polyhedra cages immobilized on a plasmonic substrate for sensitive detection of trace explosives

Chen Wang, Jin Shang, Yue Lan, Tian Tian, Hui Wang, Xi Chen, Jing-Ying Gu, Jefferson Zhe Liu, Li-Jun Wan, Wei Zhu, Guangtao Li

Research output: Contribution to journalArticleResearchpeer-review

26 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)6009 - 6017
Number of pages9
JournalAdvanced Functional Materials
Volume25
Issue number37
DOIs
Publication statusPublished - 2015

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