Photocatalytic CO2 Reduction Mediated by Electron Transfer via the Excited Triplet State of Zn(II) Porphyrin: Difference between revisions

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{{DOI|doi=10.1021/jacs.9b12712}}
{{DOI|doi=10.1021/jacs.9b12712}}
[[Category:Photocatalytic CO2 conversion to CO]][[Category:Publication]]
[[Category:Photocatalytic CO2 conversion to CO]]
[[Category:Publication]]
{{BaseTemplate}}
{{BaseTemplate}}
===Abstract===
====Summary====
A photochemical reduction of CO<sub>2</sub> to CO was shown using the zinc porphyrin dyad with a connected rhenium complex {{#moleculelink:|link=LYVLANYMDXKDOV-CVVGJFHCSA-M|image=false|width=300|height=200}} as a combined catalyst and photosensitizer molecule. Turnover numbers (TONs) of >1300 and a selectivity of >99.9% for CO were reached in DMA. The experiments were conducted under visible-light irradiation (λ = 420 nm) using BIH as sacrificial electron donor (see section SEDs below).
====Advances and special progress====
A selective method for the reduction of CO<sub>2</sub> to CO with a porphyrin-rhenium complex dyad was presented, effectively linking the catalyst and photosensitizer in one molecule.
====Additional remarks====
===Content of the published article in detail===
The article contains results for the reduction of CO<sub>2</sub> to CO under visible-light catalysis using {{#moleculelink:|link=LYVLANYMDXKDOV-CVVGJFHCSA-M|image=false|width=300|height=200}} as a catalyst and photosensitizer. The catalytic system performs best (referring to the TON of CO production) in DMA.
====Catalyst and Photosensitizer====
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M  V30 24 C 10.7636 -5.3532 0.0 0
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M  V30 27 C 4.77089 -5.45767 0.0 0
M  V30 28 C 11.7635 -5.33737 0.0 0
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M  V30 42 C 8.29033 -10.8703 0.0 0
M  V30 43 C 7.42029 -9.37468 0.0 0
M  V30 44 C 7.42675 -10.3747 0.0 0
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M  V30 73 C 11.85 -2.25 0.0 0 CHG=-1
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</chemform>
====Investigation====
{{#experimentlist:|form=Photocatalytic_CO2_conversion_experiments|name=photocatalytic CO2 conversion|importFile=}}
====Sacrificial electron donor====
In this study, the experiments were done with the sacrificial electron donor {{#moleculelink:|link=VDFIVJSRRJXMAU-UHFFFAOYSA-N|image=false|width=300|height=200}}.
====Additives====
In this study, {{#moleculelink:|link=ISWSIDIOOBJBQZ-UHFFFAOYSA-N|image=false|width=300|height=200}} was used as an additive.
{{Tags|tags=photochemical CO2 reduction, CO2-to-CO conversion, visible-light photocatalysis, zinc porphyrin, rhenium complex, porphyrin-rhenium dyad, homogeneous catalysis, artificial photosynthesis, sacrificial electron donor, BIH, phenol additive, dimethylacetamide solvent, high turnover number, selective CO production}}

Latest revision as of 11:42, 21 November 2025


Abstract[edit | edit source]

Summary[edit | edit source]

A photochemical reduction of CO2 to CO was shown using the zinc porphyrin dyad with a connected rhenium complex (Zn(tBuPP))-(Re(Phen)Br(CO)3) as a combined catalyst and photosensitizer molecule. Turnover numbers (TONs) of >1300 and a selectivity of >99.9% for CO were reached in DMA. The experiments were conducted under visible-light irradiation (λ = 420 nm) using BIH as sacrificial electron donor (see section SEDs below).

Advances and special progress[edit | edit source]

A selective method for the reduction of CO2 to CO with a porphyrin-rhenium complex dyad was presented, effectively linking the catalyst and photosensitizer in one molecule.

Additional remarks[edit | edit source]

Content of the published article in detail[edit | edit source]

The article contains results for the reduction of CO2 to CO under visible-light catalysis using (Zn(tBuPP))-(Re(Phen)Br(CO)3) as a catalyst and photosensitizer. The catalytic system performs best (referring to the TON of CO production) in DMA.

Catalyst and Photosensitizer[edit | edit source]

(Zn(tBuPP))-(Re(Phen)Br(CO)3)

Investigation[edit | edit source]

catcat conc [µM]e-De-D conc [M]solvent Aadditives..λexc [nm].TON CO....
1.

(Zn(tBuPP))-(Re(Phen)Br(CO)3)

0.05

BIH

0.05

DMA

phenol420 nm910
2.

(Zn(tBuPP))-(Re(Phen)Br(CO)3)

0.075

BIH

0.05

DMA

phenol420 nm1340
3.

(Zn(tBuPP))-(Re(Phen)Br(CO)3)

0.05

BIH

0.05

DMA

420 nm520
Investigation-Name: photocatalytic CO2 conversion

Sacrificial electron donor[edit | edit source]

In this study, the experiments were done with the sacrificial electron donor BIH.

Additives[edit | edit source]

In this study, PhOH was used as an additive.

Tags: photochemical CO2 reduction, CO2-to-CO conversion, visible-light photocatalysis, zinc porphyrin, rhenium complex, porphyrin-rhenium dyad, homogeneous catalysis, artificial photosynthesis, sacrificial electron donor, BIH, phenol additive, dimethylacetamide solvent, high turnover number, selective CO production

Investigations

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