About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Porous Materials for Energy and Environment Applications
|
| Presentation Title |
Crystal Packing-Related Porosity in Molecular Co-Crystals: Porphyrin/C60 as a Working Model System |
| Author(s) |
Lawrence Paul Cook, Greg A. Brewer, Winnie K.-W. Wong-Ng |
| On-Site Speaker (Planned) |
Lawrence Paul Cook |
| Abstract Scope |
Crystallographically-controlled microporosity is important for a number of applications involving host/guest relationships and the resulting functionalities. The level of porosity depends largely on the crystal packing of the constituent entities, in turn related to bonding and charge distribution requirements. In molecular compounds, the complexity is somewhat reduced, as inter-entity bond strengths are weaker (e.g. van der Waals vs. ionic or covalent) and the shape and size of the packing entities play a greater role. Molecular compounds therefore offer an opportunity to study the geometrical aspects of packing/porosity. Such relationships are further enhanced in molecular co-crystals, where it is possible to consider relatively simple geometrical models. For example, crystal packing and porosity in iridium tetraphenyl porphyrin/C60 can be interpreted in terms of a ball/plate model, although quantitative mathematical descriptions are nonetheless challenging. We discuss this and related compounds in terms of the ball/plate and other models for porosity. |