Berlin 2018 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 1: Focus: Molecularly Functionalized Low-Dimensional Systems I - organized by Antonio Setaro, Carola Meyer, Aravind Vijayaraghvan and Matteo Mannini

CPP 1.10: Vortrag

Montag, 12. März 2018, 12:30–12:45, C 130

Lanthanide-Functionalised Two Dimensional Transition Metal Dichalcogenides — •David Lewis — School of Materials, University of Manchester

Nanostructures provide a unique platform on which to assemble molecular layers.[1] Functionalisation of transition metal dichalcogenides (TMCDs) in particular, provides a facile route by which to produce new advanced composite nanomaterials that have advanced optoelectronic properties.[2]

Assembly of molecular lanthanide (III) complexes onto two-dimensional TMDCs provides an attractive opportunity by which to extend the latters advanced materials properties. For example, we have recently shown that 2D molybdenum disulfide nanosheets can be functionalised with both Eu3+ and Gd3+ complexes simultaneously.[3] The resulting nanomaterials display long photoluminescence emission lifetimes of 0.8 ms from the Eu3+ emission in the red region of the electromagnetic spectrum (570 to 720 nm), derived from the 5D0 to 7Fj electronic f-f transitions, whilst having strong paramagnetic response in EPR spectra, and thus could be used as a bimodal optical probe / magnetic resonance imaging contrast agent. The approach could be extended by exploring the whole range of lanthanide elements available for assembly on 2D surfaces. This talk will explore the feasibility of these exciting possibilities.

References [1] (a) Lewis et al, Chem Commun, 2006, 1433, (b) Lewis et al Coord. Chem. Rev. 2014, 273, 213. [2] Knirsch et al ACS Nano 2015, 9, 6018. [3] McAdams et al, Adv Func. Mater. 2017, 1703646.