Expanded bite angles in tridentate ligands. Improving the photophysical properties in bistridentate RuII polypyridine complexes

Leif Hammarström, Olof Johansson

Research output: Contribution to journalArticle

86 Citations (Scopus)

Abstract

Bistridentate metal complexes as photosensitizers are ideal building blocks in the construction of rod-like isomer-free assemblies for intramolecular photoinduced charge separation. Approaches to obtain long-lived luminescent metal-to-ligand charge transfer excited states in bistridentate RuII polypyridine complexes via the manipulation of metal-centered state energies are discussed. Following an introduction to general strategies to prolong the excited state lifetimes, more recent work is explored in detail where tridentate ligands with expanded 2,2′:6′,2″-terpyridine cores are utilized. The synthesis of these tridentate ligands and their corresponding RuII complexes is covered. Bistridentate RuII complexes with microsecond metal-to-ligand charge transfer excited state lifetimes are described, and are used in electron donor-photosensitizer-electron acceptor assemblies for efficient vectorial photoinduced charge separation.

Original languageEnglish
Pages (from-to)2546-2559
Number of pages14
JournalCoordination Chemistry Reviews
Volume254
Issue number21-22
DOIs
Publication statusPublished - Nov 2010

Fingerprint

Ligands
Excited states
ligands
Photosensitizing Agents
Photosensitizers
Metals
polarization (charge separation)
metals
assemblies
Charge transfer
charge transfer
excitation
life (durability)
Electrons
Coordination Complexes
Metal complexes
Isomers
Electron energy levels
manipulators
electrons

Keywords

  • Donor-acceptor
  • Luminescence
  • Photochemistry
  • Polypyridine ligands
  • Ruthenium
  • Tridentate ligands

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Expanded bite angles in tridentate ligands. Improving the photophysical properties in bistridentate RuII polypyridine complexes. / Hammarström, Leif; Johansson, Olof.

In: Coordination Chemistry Reviews, Vol. 254, No. 21-22, 11.2010, p. 2546-2559.

Research output: Contribution to journalArticle

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