Water-Assisted Highly Efficient Photocatalytic Reduction of CO2 to CO with Noble Metal-Free Bis(terpyridine)iron(II) Complexes and an Organic Photosensitizer: Difference between revisions

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[[Category:Photocatalytic CO2 conversion to CO]][[Category:Publication]]
[[Category:Photocatalytic CO2 conversion to CO]][[Category:Publication]]
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===Abstract===
====Summary====
A photochemical reduction of CO<sub>2</sub> to CO was shown using the iron complexes {{#moleculelink: |link=VCSOHGDMTDAXCJ-UHFFFAOYSA-N|image=false|width=300|height=200}}, {{#moleculelink: |link=GNLSTNFUDXOKCD-UHFFFAOYSA-N|image=false|width=300|height=200}} and {{#moleculelink: |link=DJDQCCRAAYOAPK-UHFFFAOYSA-N|image=false|width=300|height=200}} as catalysts in combination with the organic photosensitizer {{#moleculelink:|link=PRWATGACIORDEL-UHFFFAOYSA-N|image=false|width=300|height=200}}. Turnover numbers (TONs) of 6320 and a selectivity of 99.4% for CO were reached in DMF/H<sub>2</sub>O with catalyst {{#moleculelink: |link=DJDQCCRAAYOAPK-UHFFFAOYSA-N|image=false|width=300|height=200}}. The experiments were conducted under visible-light irradiation (λ = 440 nm) using TEA as sacrificial electron donor (see section SEDs below).
====Advances and special progress====
One of the highest TONs for CO<sub>2</sub> reduction with an organic thermally activated delayed fluorescence (TADF) compound as a photosensitizer was reported herein.
====Additional remarks====
The addition of water was found to strongly promote the catalytic reaction.
===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 the iron complex {{#moleculelink: |link=DJDQCCRAAYOAPK-UHFFFAOYSA-N|image=false|width=300|height=200}} as a catalyst. The catalytic system performs best (referring to the TON of CO production) in DMF/H<sub>2</sub>O.
====Catalyst====
<chemform smiles="C1C=CN2~[Fe]34(~N5C=CC=CC=5C5N~3=C(C=C(C3C=CC([*])=CC=3)C=5)C3C=CC=CN=3~4)3~N4=CC=CC=C4C4C=C(C5C=CC([*])=CC=5)C=C(N=4~3)C=2C=1" inchi="" inchikey="" height="200px" width="300px" float="none" r1="H,Cl,NMe2">
  -INDIGO-05142416252D
  0  0  0  0  0  0  0  0  0  0  0 V3000
M  V30 BEGIN CTAB
M  V30 COUNTS 51 62 0 0 0
M  V30 BEGIN ATOM
M  V30 1 C 5.63485 -4.15007 0.0 0
M  V30 2 C 7.36515 -4.14959 0.0 0
M  V30 3 C 6.50164 -3.64997 0.0 0
M  V30 4 N 7.36515 -5.15053 0.0 0
M  V30 5 C 5.63485 -5.15502 0.0 0
M  V30 6 C 6.50382 -5.65003 0.0 0
M  V30 7 C 8.23141 -3.64999 0.0 0
M  V30 8 C 9.09513 -2.15069 0.0 0
M  V30 9 C 8.23103 -2.64928 0.0 0
M  V30 10 C 9.96231 -2.65058 0.0 0
M  V30 11 N 9.10205 -4.15188 0.0 0
M  V30 12 C 9.9649 -3.64626 0.0 0
M  V30 13 C 10.8332 -4.14233 0.0 0
M  V30 14 C 12.5635 -4.14069 0.0 0
M  V30 15 C 11.6996 -3.64164 0.0 0
M  V30 16 C 12.5641 -5.14163 0.0 0
M  V30 17 N 10.8338 -5.14728 0.0 0
M  V30 18 C 11.7032 -5.64171 0.0 0
M  V30 19 Fe 9.125 -5.95 0.0 0
M  V30 20 C 5.70985 -6.65007 0.0 0
M  V30 21 N 7.44015 -6.64959 0.0 0
M  V30 22 C 6.57664 -6.14997 0.0 0
M  V30 23 C 7.44015 -7.65053 0.0 0
M  V30 24 C 5.70985 -7.65502 0.0 0
M  V30 25 C 6.57882 -8.15003 0.0 0
M  V30 26 C 8.30666 -8.1497 0.0 0
M  V30 27 C 10.037 -8.14805 0.0 0
M  V30 28 N 9.17311 -7.64901 0.0 0
M  V30 29 C 10.0376 -9.149 0.0 0
M  V30 30 C 8.30733 -9.15464 0.0 0
M  V30 31 C 9.17663 -9.64907 0.0 0
M  V30 32 C 10.9029 -7.64788 0.0 0
M  V30 33 C 11.7666 -6.14857 0.0 0
M  V30 34 N 10.9025 -6.64716 0.0 0
M  V30 35 C 12.6338 -6.64846 0.0 0
M  V30 36 C 11.7735 -8.14977 0.0 0
M  V30 37 C 12.6364 -7.64414 0.0 0
M  V30 38 C 9.09493 -1.15069 0.0 0
M  V30 39 C 9.18116 -10.6491 0.0 0
M  V30 40 C 10.0477 -12.1467 0.0 0
M  V30 41 C 10.048 -11.1491 0.0 0
M  V30 42 C 9.18123 -12.6478 0.0 0
M  V30 43 C 8.31119 -11.1521 0.0 0
M  V30 44 C 8.31765 -12.1522 0.0 0
M  V30 45 C 8.22835 0.346977 0.0 0
M  V30 46 C 8.22809 -0.650659 0.0 0
M  V30 47 C 9.09486 0.848029 0.0 0
M  V30 48 C 9.9649 -0.647629 0.0 0
M  V30 49 C 9.95844 0.352425 0.0 0
M  V30 50 R# 9.09323 1.84803 0.0 0 RGROUPS=(1 1)
M  V30 51 R# 9.18286 -13.6478 0.0 0 RGROUPS=(1 1)
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 1 2 3 1
M  V30 2 2 4 2
M  V30 3 1 1 5
M  V30 4 1 2 3
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M  V30 6 1 6 4
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M  V30 35 2 34 32
M  V30 36 2 35 33
M  V30 37 1 32 36
M  V30 38 1 33 34
M  V30 39 2 36 37
M  V30 40 1 37 35
M  V30 41 1 8 38
M  V30 42 1 31 39
M  V30 43 2 41 39
M  V30 44 2 42 40
M  V30 45 1 39 43
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M  V30 48 1 44 42
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M  V30 52 1 45 46
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M  V30 END BOND
M  V30 END CTAB
M  END
</chemform>
====Photosensitizer====
<chemform smiles="" inchi="" inchikey="PRWATGACIORDEL-UHFFFAOYSA-N" height="200px" width="300px" float="none"></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 TEA ({{#moleculelink:|link=ZMANZCXQSJIPKH-UHFFFAOYSA-N|image=false|width=300|height=200}}).
====Additives====
In this study, no additives were tested.

Latest revision as of 08:55, 15 May 2024


Abstract[edit | edit source]

Summary[edit | edit source]

A photochemical reduction of CO2 to CO was shown using the iron complexes 100947, 100948 and 100949 as catalysts in combination with the organic photosensitizer 4CzIPN. Turnover numbers (TONs) of 6320 and a selectivity of 99.4% for CO were reached in DMF/H2O with catalyst 100949. The experiments were conducted under visible-light irradiation (λ = 440 nm) using TEA as sacrificial electron donor (see section SEDs below).

Advances and special progress[edit | edit source]

One of the highest TONs for CO2 reduction with an organic thermally activated delayed fluorescence (TADF) compound as a photosensitizer was reported herein.

Additional remarks[edit | edit source]

The addition of water was found to strongly promote the catalytic reaction.

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 the iron complex 100949 as a catalyst. The catalytic system performs best (referring to the TON of CO production) in DMF/H2O.

Catalyst[edit | edit source]

100946 [Show R-Groups]

Photosensitizer[edit | edit source]

4CzIPN

Investigation[edit | edit source]

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

Molecule:100949

0.01

4CzIPN

0.05

TEA

0.28

DMF

420-6506320
2.

Molecule:100948

0.01

4CzIPN

0.05

TEA

0.28

DMF

420-6502780
3.

Molecule:100947

0.01

4CzIPN

0.05

TEA

0.28

DMF

420-6504500
4.

Molecule:100949

0.01

Ru(bpy)3

0.05

TEA

0.28

DMF

420-65019
5.

Molecule:100949

0.01

4CzIPN

0.05

TEA

0.28

MeCN

420-650992
Investigation-Name: photocatalytic CO2 conversion

Sacrificial electron donor[edit | edit source]

In this study, the experiments were done with the sacrificial electron donor TEA (TEA).

Additives[edit | edit source]

In this study, no additives were tested.

Investigations