Abstract
Novel organic–inorganic mesoporous luminescent hybrid material N, N′-bis(salicylidene)-thiocarbohydrazide (BSTC-SBA-15) has been obtained by co-condensation of tetraethyl orthosilicate and the organosilane in the presence of Pluronic P123 surfactant as a template. N,N′-bis(salicylidene)-thiocarbohydrazide (BSTC) grafted to the coupling agent 3-(triethoxysilyl)-propyl isocyanate (TESPIC) was used as the precursor for the preparation of mesoporous materials. In addition, for comparison, SBA-15 doped with organic ligand BSTC was also synthesized, denoted as BSTC/SBA-15. This organic–inorganic hybrid material was well-characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy (HRTEM), and photoluminescence spectra, which reveals that they all have high surface area, uniformity in the mesostructure. The resulting materials (BSTC-SBA-15 and BSTC/SBA-15) exhibit regular uniform microstructures, and no phase separation happened for the organic and the inorganic compounds was covalently linked through Si–O bonds via a self-assemble process. Furthermore, the two materials have different luminescence range: BSTC/SBA-15 presents the strong dominant green luminescence, while BSTC-functionalized material BSTC-SBA-15 shows the dominant blue emission.
Highlights
Organic–inorganic hybrid materials have been subjected to more intense development in the field of materials science since they combine the respective beneficial characters of organic and inorganic components and often exhibit exceptional properties that exceed what would be excepted for a simple mixture of the components [1,2,3,4]
We report on the synthesis and characterization of N,N0-bis(salicylidene) –thiocarbohydrazide (BSTC) functionalized SBA-15 mesoporous hybrid material, in which BSTC was covalently bonded to the framework of SBA-15 by co-condensation of the modified BSTC and the tetraethoxysilane (TEOS) using the Pluronic P123 surfactant as template
Synthesis of Thiocarbohydrazide Twenty microliter of 85% hydrazine hydrate was dissolved in 60 mL of water, and 6 mL CS2 was added dropwise, the reaction mixture was kept under room temperature for 1 h and heated to 90°C for an additional 8 h
Summary
Organic–inorganic hybrid materials have been subjected to more intense development in the field of materials science since they combine the respective beneficial characters of organic and inorganic components and often exhibit exceptional properties that exceed what would be excepted for a simple mixture of the components [1,2,3,4]. SBA-15 is by far the largest pore size mesochannels, with thick walls, adjustable pore size from 3 to 30 nm, and high hydrothermal and thermal stability [30,31,32,33] These properties together with the thermal and mechanical stabilities make it as an ideal host for incorporation of active molecules, and some work has already been devoted on this field. The synthesis and luminescence properties of SBA-15 mesoporous materials covalently bonded with organic schiffbase ligands have hardly been explored to date [37]. We report on the synthesis and characterization of N,N0-bis(salicylidene) –thiocarbohydrazide (BSTC) functionalized SBA-15 mesoporous hybrid material (denoted as BSTC-SBA-15), in which BSTC was covalently bonded to the framework of SBA-15 by co-condensation of the modified BSTC (denoted as BSTC-Si) and the tetraethoxysilane (TEOS) using the Pluronic P123 surfactant as template.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
