TY - JOUR
T1 - Expanded bite angles in tridentate ligands. Improving the photophysical properties in bistridentate RuII polypyridine complexes
AU - Hammarström, Leif
AU - Johansson, Olof
N1 - Funding Information:
We thank all collaborators and co-workers who have been involved in the development of novel Ru-based photosensitizers within the Swedish Consortium for Artificial Photosynthesis whose names can be found in the references. Financial support from the Swedish Research Council (VR), the Swedish Energy Agency, the Knut and Alice Wallenberg Foundation, and EU (NEST-STRP 516510 “SOLAR-H”; FP7 Energy 212508 “SOLAR-H2”) is gratefully acknowledged. L.H. gratefully acknowledges a research fellow position during 2002–2007 from the Royal Swedish Academy of Science, and a generous grant from the Swedish Foundation for Strategic Research.
PY - 2010/11
Y1 - 2010/11
N2 - 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.
AB - 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.
KW - Donor-acceptor
KW - Luminescence
KW - Photochemistry
KW - Polypyridine ligands
KW - Ruthenium
KW - Tridentate ligands
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U2 - 10.1016/j.ccr.2010.01.006
DO - 10.1016/j.ccr.2010.01.006
M3 - Review article
AN - SCOPUS:77956226474
VL - 254
SP - 2546
EP - 2559
JO - Coordination Chemistry Reviews
JF - Coordination Chemistry Reviews
SN - 0010-8545
IS - 21-22
ER -