Time: Jan 7th, 2016, PM 2:00
Location: Conference Room at the 1st floor, No. 1 Energy Building
Lecturer： Chung-Yuan Mou (Chemistry Department, Taiwan University)
Abstract：Applications of Mesoporous silica depends on its morphology. However, laboratory synthetic control of the morphology of silica is often done in random discoveries without a good understanding of the rich physical chemistry involved in their self-assembly. We are particularly motivated by the rich morphologies in biological silica such as the shells of diatom. A step towards precision control of the morphologies is through scattering studies, small angle X-ray and neutron, of the assembly processes of the materials at mesoscale (e.g. 1 to 100 nm). We will discuss three cases, mesoporous silica nanoparticles, hollow silica nanospheres, and mesoporous silica thin film with perpendicular nanochannels. The mesophases involved are micelles, microemulsion and liquid crystalline phases. The interplay of silica condensation induced phase changes will be discussed. Applications, mostly in biomedicine, of the resulting silica nanostructures will also be presented.
Introduction：Prof. Chung-Yuan Mou earned his Ph.D. in theoretical chemistry from Washington University in Saint Louis, in 1975. After postdoctoral research, he joined National Taiwan University in 1978 where he is now University Chair Professor of Chemistry. He has been awarded National Chair Professor, Chinese Chemical Society Medal, Cozarrelli Prize of PNAS, Chair of Y. Z. Hsu Science and Technology. His research interest includes biomedical applications of mesoporous silica, heterogeneous catalysis, supercooled water, enzyme immobilization, biomineralization, and science policy. He has published more than 350 papers on the international journals (e.g., Science, J. Am. Chem. Soc., ACS Nano, Small, etc.) with ~ 13,500 citations and an h-index of 67.
Contacts：Group 1502 Hui Sun (89161)