时　间：2019年4月22日下午14:00

地　点：高等研究院会议室

报告人：Maarten Goesten

职　务：KAUST Catalysis Center博士后

报告题目：Crystal Engineering: between Chemistry and Physics

报告简介：How do we design materials with specific and targeted properties? That is the central question in this lecture, where I will regularly cross boundaries between chemistry and physics, and look at materials for catalysis, photovoltaics and superconductivity.

I will start with Metal-Organic Frameworks, and show how the complexity of coordination chemistry in solution may trouble the dream of ‘solids by design’. But I will also show how a combination of synthesis, spectroscopy and theory allows us to understand the chemical pathways that govern MOF crystallization, and how this aids our ability to tune MOF synthesis to our liking.  

In the second part, I move to hierarchical zeolites; zeolites that are porous at multiple length scales. I discuss the time domains during which order establishes itself at different levels, and demonstrate how the obtained knowledge herein allowed me to create hierarchical zeolites with inexpensive structure-directing agents.

The third part zooms in on perovskites, and treats one of the main questions that arose in the community a few years ago: how do the metal and the halide control the band gap? I will introduce a theoretical model that allows for band gap engineering across a wide spectrum of perovskite materials.

I finish by describing a new theory of superconductivity, a theory which provides the means to design superconductors. I show how I recently applied this theory to predict a new class of porous superconductors.