Salicylidene Schiff Base Assembled with Mesoporous Silica SBA-15 as Hybrid Materials for\nMolecular Logic Function

Abstract

The multiresponse molecule salicylidene Schiff base, <i>N</i>-3,5-dichlorosalicylidene-(<i>S</i>)-α-phenylethylamine\n(SPEA), was fully encapsulated into the channel of the amino-functionalized mesoporous molecular sieve\nSBA-15 via the hydrogen bond assembly. This organic/inorganic hybrid material was well-characterized by\nX-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, UV−vis diffuse-reflectance spectra, and photoluminescence spectra. The result indicates that, in sequence modification of\naminopropyl and SPEA, the primary hexagonally ordered mesoporous structure of SBA-15 has not been\ndestroyed. Stimulated by the inputs of OH^-, Zn²⁺, and UV light, this hybrid material can present strong\nfluorescence outputs and perform a more complex logic function than in the solution system. The strong\nfluorescence emission makes its logic operation detectable and applicable.