Synthesis, Characterization And Potential Applications Of Organosilicon Based And Related Mesoporous Molecular Sieves

Mesoporous materials having high surface area with tunable pore size distribution in nano scale dimensions have attracted widespread interest in recent times. These special properties make mesoporous materials focus of great research interests in catalysis, adsorption, sensing, separation, drug delivery and controlled release of bioactive pharmaceuticals. During the past two decades a prevalent interest and incredible resonance as a fundamental and technological challenge to chemists, physicists and engineers has been gained by organic-inorganic hybrid materials and macromolecular building blocks of nanoscale dimensions. Hybrid mesoporous materials are unique and molecular control of their intrinsic topological and chemical characteristics can be explained through self-assembly and nanochemistry techniques. Post synthesis and in-situ synthesis both the techniques have been adopted to develop the organic-inorganic hybrid mesoporous materials. Furfural imine functionalized mesoporous silica has been synthesized by using CTAB as structure directing agent by applying in-situ grafting technique. This furfural imine functionalized mesoporous SBA-15 has been also developed by employing post-grafting approach. Then these two different mesoporous materials have been subjected to react with Cu(OAc)2 to deliver Cu-grafted mesoporous organosilica. After Cu grafting different crystalline phases have been generated for the two different mesoporous silica materials. Also In another case –NH2 functionalized mesoporous organoslica has been developed by applying in-situ grafting technique. Surface of mesoporous SBA-15 has been functionalized by reaction with 3-aminopropyltriethoxy silane. Then –CO2H functionalized mesoporous SBA-15 has been synthesized by applying Schiff-base condensation reaction. Fe3O4 nanoparticle has been grafted into the mesopore channel of cysteine functionalized mesoporous SBA-15 material. Thiol-ene click chemistry has been adopted to prepare cysteine functionalized mesoporous SBA-15 material.The research was carried out under the supervision of Prof. Asim Bhaumik of the Material Science division under SMS [School of Materials Science]The research was carried out under CSIR fellowship and research gran