Hydrogen-bonded scaffolding for crystal engineering

Chain stopper engineering for hydrogen bonded supramolecular polymers

Supramolecular polymers are linear chains of low molar mass monomers held together by reversible and directional non-covalent interactions, which can form gels or highly viscous solutions if the self-assembled chains are sufficiently long and rigid. The viscosity of these solutions can be controlled by adding monofunctional compounds, which interact with the chain extremities: chain stoppers. W...

Current Concepts in Scaffolding for Bone Tissue Engineering

Bone disorders are of significant worry due to their increased prevalence in the median age. Scaffold-based bonetissue engineering holds great promise for the future of osseous defects therapies. Porous composite materials andfunctional coatings for metallic implants have been introduced in next generation of orthopedic medicine for tissueengineering. While osteoconductive materials such as hyd...

Semi-flexible hydrogen-bonded and non-hydrogen bonded lattice polymers

We investigate the addition of stiffness to the lattice model of hydrogen-bonded polymers in two and three dimensions. We find that, in contrast to polymers that interact via a homogeneous short-range interaction, the collapse transition is unchanged by any amount of stiffness: this supports the physical argument that hydrogen bonding already introduces an effective stiffness. Contrary to possi...

Dynamics of the crystal to plastic crystal transition in the hydrogen bonded N-isopropylpropionamide.

N-Isopropylpropionamide (NiPPA), which can self-associate via hydrogen bonds, was found to undergo a solid-solid transition as identified by DSC and X-ray diffraction. Below the melting temperature of 51 °C NIPPA adopts a plastic crystalline state with a tetragonal unit cell until it transforms into an ordered crystal with a monoclinic structure at temperatures ≤10 °C. Dielectric spectroscopy w...

Multiple Hydrogen-Bonded Supramolecular Polymers