Abstract
Achieving explosive detection and fingerprints visualization at the same time is of great significance. Towards this end, based on the cage structure and multiple reaction sites of octavinyl polyhedral oligomeric silsesquioxane (OVS), a series of multifunctional silicone porous materials OVSBs and OVSTs were designed and synthesized with 1,3,5-triphenylbenzene and 2,4,6-triphenyl-1,3,5-triazine. These porous materials have narrow pore size distribution, high specific surface area and pony-sized that smaller than 5 nm. The micropore volume ratio of porous materials can be changed by regulating the molar ratio of OVS to functional compounds. OVSB-2 shows excellent adsorption capacity for fluorescent dyes due to its highest specific surface area and high micropore volume ratio. OVSB-2 also has superior fluorescence characteristic, which can quickly detect nitroaromatic compounds within 20 s. This work provided a new method for expanding the application of silicone mesoporous materials in explosive detection and fingerprints visualization simultaneously.
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