Metallo-supramolecular polymers

Metallo-supramolecular polymers with photoredox activities: characterization and application

1 D Coordination polymers have attracted a considerable interest because of the great versatility of their fabrication using a simple self-assembly process, especially those incorporating metal ion in a 2,2’:6’,2’’ terpyridine bridging ligand, that allows linear geometry. In that field we propose to study new structures based on some original ditopic ligands bearing two different coordination sites: square planar and octahedral, thus allowing access to well organized bi-metallic coordination polymers (Figure 1). In particular the coordination of Cu+ (tetravalent) in a phenanthroline like ligand could offer applications in conversion and storage of solar energy. During the master intership, the photophysical and electrochemical properties of the building blocks (i.e. [Cu(phen)2]+ and [M(tpy)2] (M= Zn(II), Cr(III) or Co(III)) will first be studied in solution. Then the properties of the coordination polymers will be investigated in solution and after deposition as thin film on electrode. For a Cu/Zn alternated structure a high emissive structure is expected whereas the Co(III) or Cr(III) would allow photoinduced electron transfer process.

Related Publications:
  • New functional polymers and materials based on 2,2’:6’,2’’-terpyridine metal complexes, P. Andres, U. Schubert, Adv. Mater., 2004, 16, 1043.
  • A Heterometallo-​Supramolecular Polymer with Cu(I) and Fe(II) Ions Introduced Alternately, D. Hossain, J. Zhang, R. K. Pandey, T. Sato, M. Higuchi, , Eur. J. Inorg. Chem., 2014, 2014, 3763.
  • Photoinduced charge separation within metallo-supramolecular wires built around a [Ru(bpy)3]2+ bisterpyridine entity R. Farran, D. Jouvenot, B. Gennaro, F. Loiseau, J. Chauvin, A. Deronzier.. ACS Appl. Mater. Interfaces, 2016, 8, 16136.
Background and skills expected: We are looking for a student with knowledge on coordination chemistry, having large interest for chemical-physics characterization notably electrochemistry and stationary and time resolved emission spectroscopy

Competences that will be acquired during the internship: Practical in Electrochemistry (cyclic voltammetry) in glove box. Working with nanosecond and picosecond pulsed laser for emission measurements. Electrodeposition technics and surface imaging (AFM, SEM,…)
Published on November 27, 2020
Updated on November 27, 2020