2010
DOI: 10.1021/jp102901u
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Excitation of Highly Conjugated (Porphinato)palladium(II) and (Porphinato)platinum(II) Oligomers Produces Long-Lived, Triplet States at Unit Quantum Yield That Absorb Strongly over Broad Spectral Domains of the NIR

Abstract: Transient dynamical studies of bis [(5,5′-10,20-bis(2,6-bis(3,3-dimethylbutoxy)phenyl)porphinato)palladium(II)] ethyne (PPd 2 ), 5,15-bis{ [(5′-10,20-bis(2,6-bis(3,3-dimethylbutoxy)phenyl)porphinato)palladium(II)]ethynyl}(10,20-bis(2,6-bis(3,3-dimethylbutoxy)phenyl)porphinato)palladium(II) (PPd 3 ), bis [(5,5′-10,20-bis(2,6-bis(3,3-dimethylbutoxy)phenyl)porphinato)platinum(II)]ethyne (PPt 2 ), and 5,15-bis{[(5′-10,20-bis(2,6-bis(3,3-dimethylbutoxy)phenyl)porphinato)platinum(II)]ethynyl}(10,20-bis(2,6-bis(3,3-d… Show more

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Cited by 45 publications
(35 citation statements)
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“…169 In 2010, Therien and coworkers reported both reduction and oxidation potentials for a suite of dyads and triads featuring palladium(II) and platinum(II), namely 59g, 59h, 60c, and 60d, in addition to the zinc complexes 59j and 60f and free bases 59k and 60g. 128 The expected anodic shift of the oxidation potentials for the heavy metal complexes was observed, as well as the typical order of the voltammetric HOMO-LUMO gap, e.g. for Pt 2 59h, 2.23 V, and even for the Pt 3 triad 60d, 1.98 V. On the other hand, the mixed-valence splittings on the oxidative side did not seem to correlate with the nature of the central metal.…”
Section: B Electrochemistry and Spectroelectrochemistrymentioning
confidence: 82%
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“…169 In 2010, Therien and coworkers reported both reduction and oxidation potentials for a suite of dyads and triads featuring palladium(II) and platinum(II), namely 59g, 59h, 60c, and 60d, in addition to the zinc complexes 59j and 60f and free bases 59k and 60g. 128 The expected anodic shift of the oxidation potentials for the heavy metal complexes was observed, as well as the typical order of the voltammetric HOMO-LUMO gap, e.g. for Pt 2 59h, 2.23 V, and even for the Pt 3 triad 60d, 1.98 V. On the other hand, the mixed-valence splittings on the oxidative side did not seem to correlate with the nature of the central metal.…”
Section: B Electrochemistry and Spectroelectrochemistrymentioning
confidence: 82%
“…164 To probe the nature and properties of the triplet excited states in more depth, Therien and coworkers applied the same techniques to their palladium(II) and platinum(II) dyads (59g and 59h) and triads (60c and 60d). 128 The heavy atoms induce effects that are well documented for Pd and Pt Por monomers. The S 1 → S 0 fluorescence is far weaker than that for free base or Zn complexes, while T n → S 0 phosphorescence becomes dominant, and was observed at 77 K in deoxygenated methylTHF glass.…”
Section: Emission Spectroscopy and Electronically-excited Statesmentioning
confidence: 95%
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