Organic-Inorganic Hybrid Mesoporous Materials as Regenerable Sensing Systems for the Recognition of Nitroaromatic Explosives
作者:Krishanu Sarkar、Yolanda Salinas、Inmaculada Campos、Ramón Martínez-Máñez、María D. Marcos、Félix Sancenón、Pedro Amorós
DOI:10.1002/cplu.201300140
日期:2013.7
Fluorescent organic-inorganic mesoporous hybrid materials have been prepared and characterised, and their behaviour against nitroaromatic explosives have been tested. MCM-41 silica was used as an inorganic scaffold and pyrene (P derivative containing trialkoxysilane moieties), dansyl and fluorescein (D and F derivatives also containing trialkoxysilane groups, respectively) fluorophores have been anchored
已经制备并表征了荧光有机-无机介孔杂化材料,并测试了它们对硝基芳族炸药的性能。将MCM-41二氧化硅用作无机支架,并通过共缩合方法将pyr(含三烷氧基硅烷部分的P衍生物),丹酰基和荧光素(分别含三烷氧基硅烷基团的D和F衍生物)荧光团固定在杂化材料上,从而获得染料均匀分布到载体的孔中。制备了六种传感材料,其中SP,SD,SF是亲水的,而SPh,SDh,SFh是疏水的。在温度下从合成后的固体(分别为MP,MD和MF载体)中反复进行NH4 NO3 /乙醇萃取后,获得了不含模板的亲水性材料(SP,SD,SF)。通过使用过量的1,1,1,3,3,3-六甲基二硅氮烷与不含模板的亲水性(SP,SD和SF)材料制备疏水性材料(SPh,SDh,SFh)。六种最终材料显示了接枝荧光团的典型发射带。特别地,SP和SPh显示出典型的pyr单体(370-420 nm)和准分子(430-600 nm)发射。SD和SDh在450-600