122nd General Meeting of the KCS

Type Symposium
Area [Polymer Chemistry - Material Chemistry Divisions Joint Symposium] Organic/Inorganic/Polymer Hybrids Materials: Present and Future
Room No. Room 325C+D
Time FRI 10:40-:
Code POMA-6
Subject Probing Interfacial Structure in Organosilica Nanochannels by Solid State NMR
Authors Young Joo Lee
Institute of inorganic and applied chemistry, University of Hamburg, Germany
Abstract Periodic mesoporous organosilica (PMO) are inorganic-organic hybrid materials which combine the advantages of functional variation of organic chemistry and thermal and mechanical robustness of inorganic substance. These materials are characterized by large surface area and pore sizes ranging between 2 and 15 nm, enabling applications in versatile area such as catalysis, sensor, energy storage, adsorption, chromatography etc. To develop new materials with desired properties for various applications, fundamental understanding of the materials is necessary, in particular, the influence of pore wall chemistry on the interaction with guest molecules. Solid state NMR spectroscopy is an ideal tool to get structural and dynamic information of materials even when long-range order is lacking such as amorphous and glassy materials. In this presentation, we will present solid state NMR study on the host-guest interaction and interfacial structure of confined water and surfactant in mesopores of PMO. By changing organic bridge groups with different functionality, the effect of surface polarity on the interfacial structure, confinement effect and formation mechanism will be explored.
E-mail lee@chemie.uni-hamburg.de