New paper accepted in Chemical Science on a novel lanthanide-based white-light emitting system

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Varying the colour of the emission by altering the molar fraction of europium in the system (𝛘Eu)

Congratulations to Oxana Kotova, Steve Comby and Christophe Lincheneau on their paper entitled “White-light emission from discrete heterometallic lanthanide-directed self-assembled complexes in solution” which has been accepted into the RSC journal Chemical Science. In this work, the newly designed multidentate ligand tdt was used, which provides three individual tridentate binding sites for lanthanide (Ln) ions. White-light emission was successfully achieved by carefully tuning (i) the molar ratio of Eu(III) and Tb(III) within the assembly and thus the relative intensity of the red and green emission, (ii) the excitation wavelength, as the tdt ligand consists of two different chromophores, and (iii) the ligand concentration, which greatly affects the intensity of the blue emission within the overall self-assembled complexes. We envisage that this system can be further developed and find its application as white-light emitting material or as a ratiometric sensor.

New Students Join the Research Group, welcome to Tony and CĂ©line!


We would like to welcome two new students, Tony Duggan and Céline Ruijs, to the Gunnlaugsson group. Tony is a 3rd year Pharmaceutical Healthcare student from DIT on placement in the group from January until May. Céline is a 4th year Chemistry student from Université Catholique de Louvain and will be doing an internship until May. Both of them are working on self-assembly projects with Oxana.

TG Group bid farewell to summer project undergraduate student Aisling Ryan

Aisling completed her two month summer project within the Gunnlaugsson group which she started on 6th of June and finished on 29th of July 2016. She has been an excellent addition to the group and has been working on the synthesis of tripodal terpyridine-based ligands for the formation of supramolecular polymers and gels with Sachi and Oxana. We wish her the very best of luck in her future studies and endeavors!

Dr. Oxana Kotova presents at MSMLG 2016

Oxana represented the TG Group at the 5th International Conference on Molecular Sensors and Molecular Logic Gates (MSMLG 2016) in the Chancellor’s Building at the University of Bath. The conference was attended by over 250 delegates from host of countries such as the United Kingdom, Ireland, France, Germany, Italy, Spain, Poland, USA, Canada, Japan, China, Korea and Israel.

Delegates were treated to plenary lectures including talks from Prof. J. Fraser Stoddart, Prof. Eric V. Anslyn, Prof. Mihail Barboiu, Prof. Christopher J. Chang, Prof. A. Prasanna de Silva, Prof. Philip A. Gale, Prof. Bruce Gibb, Prof. Katrina A. Jolliffe, Prof. Ben Zhong Tang and Prof. He Tian amongst others. Oxana presented her results on “Self-Assembly of Europium(III) With Chiral Asymmetrically Substituted Ligands in Solution and Formation of Langmuir-Blodgett Monolayers”.

TG Group travel to Southampton for Supramolecular Symposium

Anna Aletti, Samuel Bradberry and Dr. Oxana Kotova of the TG group attended Southampton Supramolecular Chemistry Symposium on the 24th of June 2016.

delegates

Southamption Supramolecular Symposium 2016 Delegates

All of them presented posters and, in addition, Samuel gave an excellent talk on “Lanthanide Luminescent Logic – functional organic scaffolds and soft polymers gels as logic gate mimics”.

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Sam giving his talk

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Sam and A P at the poster session

 

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Oxana with her poster

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Anna presenting her poster

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A P de Silva, Oxana, Anna, Joe and Sam at the drinks reception

Our former group member Dr. Joseph Byrne who is currently a postdoctoral researcher in the University of Bern attended the conference as well and presented a poster on his recent work published in Angew. Chem. Int. Ed. on self-templated btp [2]Catenane.

The meeting included speakers and posters from UK Universities and beyond, including an outstanding lecture from the plenary speaker Professor A. P. de Silva.

Agostino and Oxana’s article accepted

Visiting student, Agostino Galanti, from Bologna, Italy who conducted his master’s research project in the TG Group between March-September 2014, under the guidance of Dr. Oxana Kotova, has recently had his work accepted for publication in Chemistry – A European Journal.

The work entitled ‘Exploring the Effect of Ligand Structural Isomerism in Langmuir-Blodgett Films of Chiral Luminescent Eu(III) Self-Assemblies’ was carried out in collaboration with Chloe J. Johnson from Prof. Martin Albrecht‘s group in the University of Bern, Switzerland, Shaun Mills from Prof. John J. Boland‘s group, CRANN and Prof. Robert D. Peacock in the University of Glasgow.

Graphical abstract

Graphical abstract

Agostino has gone on to conduct a PhD in Prof. Paolo Samori‘s group in the University of Strasbourg and was a pleasure to work with during his time with the TG Group and we wish him all the best for the future.

doi: 10.1002/chem.201600560

Dr. Chris Hawes and Dr. Oxana Kotova present at TBSI Post-Doctoral Research Day

Dr. Chris Hawes presenting at TBSI Post-Doctoral Research Day

Dr. Chris Hawes presenting at TBSI Post-Doctoral Research Day

The annual post-doctoral research day took place on the 8th of April 2016 featuring oral presentations and posters from scientists across several of the departments and schools based in the Trinity Biomedical Sciences Institute (TBSI).

Dr. Chris Hawes from the Gunnlaugsson group presented his work on “Fluorescent Coordination Polymers for Molecular Detection” and Dr. Oxana Kotova presented a poster entitled “Exploring the Effect of Ligand Structural Isomerism in Langmuir-Blodgett Films of Chiral Luminescent Eu(III) Self-Assemblies”.

The keynote speaker on the day was Prof. Donal O’Shea, Consultant Endocrinologist, University College Dublin and the day’s talks were followed by a wine reception and prize giving ceremony.

We would like to congratulate Chris and Oxana and thank them for representing the group and showcasing their work before the entire institute.

Dr. Oxana Kotova presenting her poster accompanied by Prof. Joanna McGouran

Dr. Oxana Kotova presenting her poster accompanied by Prof. Joanna McGouran