Expanded bite angles in tridentate ligands : improving the photophysical properties in bistridentate Ru-II polypyridine complexes

• Bistridentate metal complexes as photosensitizers are ideal building blocks in the construction of rodlike isomer-free assemblies for intramolecular photoinduced charge separation. Approaches to obtain long-lived luminescent metal-to-ligand charge transfer excited states in bistridentate Run 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 Ru-II complexes is covered. Bistridentate Run 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.

Ämnesord

NATURVETENSKAP  -- Kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

Nyckelord

Ruthenium

Tridentate ligands

Polypyridine ligands

Luminescence

Photochemistry

Donor-acceptor

Chemistry

Kemi

Publikations- och innehållstyp

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