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Herein, we report the solution phase self-assembly between Eu(III) and a rigid ditopic tridentate terpyridine ligand which results in the formation of supramolecular metallo-networks in the solid state. Depending on the ligand to metal ratio used for the initial self-assembly process, the morphology of these materials can be altered from one-dimensional micron-sized fibres to a three-dimensional coordination network. The terpyridine-based ditopic ligand can act as an efficient sensitizer for Eu(III) emission whereby the emission lifetimes and ligand triplet state energies of the metallo-polymers strongly depend on the ligand to metal ratio. The obtained micron-sized fibres can act as an efficient optical wave-guide for Eu(III) emission.

A new class of soluble Eu(III) coordination polymers based on a tridentate ditopic pybox ligand has been developed displaying high metal emission quantum yields of up to 73% as well as a unique dynamic behaviour in solution.

Two-dimensional TiO2 anatase nanoplatelets can be synthesized via solvothermal reaction of titanium(IV) isopropoxide in the presence of structure-directing hydrogen fluoride. High resolution electron transmission microscopy (HRTEM), selected area electron diffraction (SAED), and X-ray powder diffraction (XRD) show that the resulting nanoplatelets are heavily–truncated, octahedral TiO2 anatase nanocrystals with a large fraction of high-energy (001) crystal facets. Systematic studies provide insight into the underlying reaction pathways and the competing, morphology-determining roles of hydrogen fluoride and water during nanocrystal formation. TiF4 can be used as an additional or alternative fluoride source in hydrolytic systems, allowing the study of markedly higher fluoride concentrations than previously reported, and/or avoiding the use of HF as a starting material. The findings can be plotted on a HF:H2O:Ti ternary diagram to provide guidelines for the control of average dimensions, aspect ratio, degree...