Home | Legals | Data Protection | Sitemap | KIT
Logo 3DMM2O
Portraitfoto Wöll
Spokesperson Thrust A2
Prof. Dr. Christof Wöll
Karlsruhe Institute of Technology (KIT)

christof woell∂kit edu

Portraitfoto Mastalerz
Spokesperson Thrust A2
Prof. Dr. Michael Mastalerz
Heidelberg University

michael mastalerz∂oci uni-heidelberg de

Crystalline Molecular Assemblies (A2)

Thrust A2 explores the controlled self-assembly of molecular building blocks.
Fabrication of crystalline molecular assemblies without inversion symmetry for optical applications in Thrust C1.

In Thrust A2 the research is focused on controlled self-assembly of molecular building blocks on surfaces (by layer-by-layer (lbl-)deposition) as well as in the bulk crystalline state. The long-term objective is to generate hierarchical assemblies with a variety of functionalities that can be activated on demand. This goal will be achieved using two strategies.

In the first, we will add sticky functional groups to the peripheries of, e.g., shape-persistent porous organic cage compounds (POCCs) in such a way that these are complementary, self-complementary or orthogonal in the self-assembling process. This provides a large toolbox to create complex self-organization patterns on demand during crystallization. For a state of the art overview on one of the PI´s previous work on POCCs with different geometries and function, see the following article published in the journal Accounts of Chemical Research:  https://pubs.acs.org/doi/10.1021/acs.accounts.8b00298

The second strategy is based on lbl-deposition in combination with laser printing (Thrust B2). We will assemble new hierarchical SURMOFs to fabricate “designer solids” with integrated vertical and horizontal compositional gradients, including materials with non-centrosymmetric structures to be used for nonlinear optical applications. Within Thrust A2, we will establish powerful automatized synthesis methods to fabricated hetero-multilayers on numerous different substrates. For a recent review of this SURMOF-based approach see: https://onlinelibrary.wiley.com/doi/pdf/10.1002/adma.201806324

Figure: Fabrication of crystalline molecular assemblies without inversion symmetry for optical applications in Thrust C1. The approach is based on the lbl-deposition of asymmetric linkers containing an electric dipole.