Conjugation length dependent ground and excited state electronic behavior in oligothienyl ru complexes.
Photoexcitation of a bis(bipyridyl) Ru(II) complex bearing a phosphinopentathiophene ligand results in formation of a transient species with a lifetime of 2.2 micros. The transient is attributed to the product of an intramolecular charge transfer from the pentathiophene ligand. EPR and UV/vis spectroelectrochemistry show that the HOMO is pentathienyl-based, while corresponding complexes with shorter conjugation length ligands have a metal-based HOMO and do not exhibit long-lived transients.
Moorlag
Carolyn
C
Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z1 Canada.
Sarkar
Biprajit
B
Sanrame
Carlos N
CN
Bäuerle
Peter
P
Kaim
Wolfgang
W
Wolf
Michael O
MO
D004583:Electrons; D008024:Ligands; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D011789:Quantum Theory; D012428:Ruthenium / Q000737:chemistry*; D013438:Sulfhydryl Compounds / Q000737:chemistry*
D008024:Ligands; D009942:Organometallic Compounds; D013438:Sulfhydryl Compounds; D012428:Ruthenium