What question did this study set out to answer?

To evaluate excited-state oxidative and reductive quenching mechanisms and photocatalytic hydrogen production using platinum(II) terpyridyl acetylide chromophores.

June 1, 2007The Journal of Physical Chemistry B

Photoinduced Electron Transfer in Platinum(II) Terpyridyl Acetylide Chromophores: Reductive and Oxidative Quenching and Hydrogen Production

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Authors

PDPingwu DuUniversity of Science and Technology of China JSJacob SchneiderNational Institute on Minority Health and Health Disparities PJPaul JaroszIBC Coatings Technologies (United States)

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Implication

Photochemical analysis demonstrates efficient photocatalytic hydrogen production using platinum(II) terpyridyl acetylides and diquat electron relays, indicating a viable pathway for solar fuel...

Key Points

To evaluate excited-state oxidative and reductive quenching mechanisms and photocatalytic hydrogen production using platinum(II) terpyridyl acetylide chromophores.
Synthesized luminescent platinum(II) terpyridyl acetylide complexes (1–4) and characterized excited-state quenching using dialkylated bipyridinium cations (acceptors) and triethanolamine (TEOA, sacrificial donor).
Measured hydrogen photogeneration under visible light (lambda > 410 nm) across varying concentrations of chromophores, bipyridinium relays, TEOA, and colloidal platinum catalyst.
Quenching rates for diquats with chromophore 2 approached the diffusion-controlled limit, with 4,4'-dimethyl-1,1'-trimethylene-2,2'-bipyridinium (DQ4) functioning as the most effective electron relay.
The optimized system containing chromophore 2 (2.2 x 10^-5 M), DQ4 (3.1 x 10^-4 M), TEOA (2.7 x 10^-2 M), and Pt colloid (6.0 x 10^-5 M) produced 800 turnovers of H2 (67% yield based on TEOA) after 20 hours of photolysis.

Cite This Study

Du et al. (2007) studied this question.

synapsesocial.com/papers/69d6e5eea0177bf533ed9486 https://doi.org/10.1021/jp072187n

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Implication

Photochemical analysis demonstrates efficient photocatalytic hydrogen production using platinum(II) terpyridyl acetylides and diquat electron relays, indicating a viable pathway for solar fuel...

Photoinduced Electron Transfer in Platinum(II) Terpyridyl Acetylide Chromophores: Reductive and Oxidative Quenching and Hydrogen Production

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Implication

Key Points

Cite This Study

Photoinduced Electron Transfer in Platinum(II) Terpyridyl Acetylide Chromophores: Reductive and Oxidative Quenching and Hydrogen Production

Discussion

Member takes

Implication

Key Points

Cite This Study

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