Academic Field

Chemistry, Chemical Engineering

Faculty Mentor Name

Timothy Cook, Ph.D.

Presentation Type

Poster Presentation

Abstract

Polynuclear molecular designs are attractive for light absorption over a broad spectral range, particularly when multiple chromophores may be incorporated into a single scaffold. The ability of Re(I) to accommodate a variety of ligands while maintaining efficient absorption and emission properties motivates its use in metallacycles and cages intended for light harvesting applications. Towards this end, a multidentate N-donor ligand with imine sites was selected for the formation of dinuclear complexes. The ligand is formed from ethylenediamine, 1,4-benzenedicarboxaldehyde, and 2,4,6-trimethylbenzaldehyde through a series of Schiff-base condensation reactions. Metalation is envisioned by treatment with Re(CO)5Br, resulting in the loss of two carbonyl ligands. Photophysical investigations will establish the extent of electronic communication between the metal centers and evaluate the emissive properties of the dinuclear complex.

Keywords

Chromophore, Rhenium, Supramolecule, Polynuclear complex, Metallacycle

Start Date

10-4-2015 2:00 PM

End Date

10-4-2015 2:45 PM

Location

SERC House of Fields

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Apr 10th, 2:00 PM Apr 10th, 2:45 PM

Synthesis and Photophysical Investigations of Polynuclear Rhenium(I) Compounds Containing Bridging Imine Donors

SERC House of Fields

Polynuclear molecular designs are attractive for light absorption over a broad spectral range, particularly when multiple chromophores may be incorporated into a single scaffold. The ability of Re(I) to accommodate a variety of ligands while maintaining efficient absorption and emission properties motivates its use in metallacycles and cages intended for light harvesting applications. Towards this end, a multidentate N-donor ligand with imine sites was selected for the formation of dinuclear complexes. The ligand is formed from ethylenediamine, 1,4-benzenedicarboxaldehyde, and 2,4,6-trimethylbenzaldehyde through a series of Schiff-base condensation reactions. Metalation is envisioned by treatment with Re(CO)5Br, resulting in the loss of two carbonyl ligands. Photophysical investigations will establish the extent of electronic communication between the metal centers and evaluate the emissive properties of the dinuclear complex.