Chromo-fluorogenic detection of nitroaromatic explosives by using silica mesoporous supports gated with tetrathiafulvalene derivatives.

摘要: Three new hybrid gated mesoporous materials (SN3-1, SNH2-2, and SN3-3) loaded with the dye [Ru(bipy)3]2+ (bipy=bipyridine) capped different tetrathiafulvalene (TTF) derivatives (having sizes shapes incorporating numbers of sulfur atoms) have been prepared. The SN3-1 SN3-3 are functionalized on their external surfaces TTF 1 3, respectively, which were attached by employing “click” chemistry reaction, whereas SNH2-2 incorporates derivative 2, was anchored to solid through an amidation reaction. final characterized standard techniques. Suspensions these solids in acetonitrile showed “zero release”, most likely because formation dense networks around pore outlets. release entrapped from SN3-1, studied presence selected explosives (Tetryl, TNT, TNB, DNT, RDX, PETN, PA, TATP). a fairly selective response Tetryl, for found occur TNB. uncapping process three can be ascribed charge-transfer complexes between electron-donating units electron-accepting nitroaromatic explosives. Finally, tested Tetryl detection soil good results, pointing toward possible use or similar as probes chromo-fluorogenic