New Paper published in Dalton Transactions

Graphical Abstract

Structure of the tetrameric [Zn4(L)4]8+ cation investigated in the work.

Congratulations to Dawn, Chris, Bjørn and Joe for their recent paper in Dalton Transactions titled “A folded [2 × 2] metallo-supramolecular grid from a bis-tridentate (1,2,3-triazol-4-yl)-picolinamide (tzpa) ligand“. In this work, a new flexible bis-tridentate donor ligand containing 1,2,3-triazolyl-picolinamide (tzpa) binding sites was developed, which contained structural elements from two of the group favorites 2,6-dipicolinamide (dpa) and 2,6-bis-(1,2,3-triazolyl)pyridine (btp). The new ligand was then used in the formation of a tetranuclear grid with Zn(II) or Fe(II) ions, which was probed with X-ray diffraction, NMR, UV-Visible spectroscopy and mass spectrometry. It also involved a productive collaboration with Dr Manuel Reuther and Dr John O’Brien from the NMR Spectroscopy Facility in TCD, who provided help in understanding the solution behavior of the material using the T1 spin-lattice relaxation parameter in 1H NMR spectroscopy.

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Two publications accepted from the group in Crystal Growth & Design and Chemical Communications

Many congratulations to Chris, Dawn and Salvador who had their paper “Structure direction, solvent effects and anion influences in halogen-bonded adducts of 2,6-bis(iodoethynyl)pyridine” accepted in the ACS journal Crystal Growth & Design and to Esther and Steve who had their paper “Cyclen lanthanide-based micellar structures for application as luminescent [Eu(III)] and magnetic [Gd(III)] resonance imaging (MRI) contrast agents” accepted in the RSC journal Chemical Communications. Both papers represent new areas within the TG research group; the former being the first publication from the group on the use of halogen bonding in self-assembly formation, while the latter presents the first examples of the formation of lanthanide based self-assembly micelles. This contribution was also the 200th to be accepted from the TG group. Well done to you all!

200th_and_201st_papers

Crystal Growth and Design article accepted

Many congratulations to Drs. Chris Hawes, Dawn Barry and Salvador Blasco on their paper “Structure direction, solvent effects and anion influences in halogen-bonded adducts of 2,6-bis(iodoethynyl)pyridine” that has been accepted for publication in the ACS journal Crystal Growth & Design. This is the first contribution from our group studying halogen bonding interactions in the crystalline phase using ‘designed ligands’, and their application in the formation of novel self-assembled supramolecular structures using anion templation chemistry.

A one-dimensional halogen-bonded assembly between the iodoethynyl donor and chloride acceptors, encapsulating tetrabutylammonium cations.

A one-dimensional halogen-bonded assembly between the iodoethynyl donor and chloride acceptors, encapsulating tetrabutylammonium cations.

 

New review publication for Dawn, Dave and Thorri

Congratulations to Dr. Dawn Barry (lead author and postdoctoral fellow in TG lab) and Dr. David F. Caffrey (former PhD student and now with Pfizer Ltd.) for their review article on lanthanide self-assembly structures and interlocked molecules which was recently accepted in Chemical Society Reviews, entitled “Lanthanide-directed synthesis of luminescent self-assembly supramolecular structures and mechanically bonded systems from acyclic coordinating organic ligands”.

Graphical Abstract CSR April 2016

Graphical Abstract CSR April 2016

Dr Dawn Barry graduates

dawn-gradAs part of the autumn commencements at Trinity College Dublin, Dr Dawn Barry was conferred with her PhD degree in the Examination Hall. Dawn started her studies in the TG Group in Summer 2010 and researched lanthanide-directed self-assembly and luminescent Langmuir-Blodgett monolayer formation among other topics.