. 2021 Nov 23;122(2):2017–2291. doi: 10.1021/acs.chemrev.1c00374

Table 1. Ground-State and Excited-State Redox Potentials for Photocatalysts Discussed in This Review.

	ground-state redox potentials		excited-state redox potentials
photocatalyst	E°_ox(PC⁺/PC)^a	E°_red(PC/PC^–)^a	E°_ox(PC⁺/*PC)^a	E°_red(*PC/PC^–)^a
[Ru(bpy)₃](PF₆)₂ ([Ru-1](PF₆)₂)	+0.88^b^,⁶⁴	–1.71^b^,⁶⁴	–1.19^b^,⁶⁴	+0.39^b^,⁶⁴
[Ru(bpz)₃](PF₆)₂ ([Ru-2](PF₆)₂)	+1.48^b^,⁶⁵	–1.18^b^,⁶⁵	–0.64^b^,⁶⁵	+1.07^b^,⁶⁵

Ir(ppy)₃ (Ir-1)	+0.39^b^,⁶⁶	–2.57^b^,⁶⁶	–2.11^b^,⁶⁶	–0.07^b^,⁶⁶
Ir(dFppy)₃ (Ir-2)	+0.69⁶⁷	–2.51⁶⁷	–1.82⁶⁷	0.00⁶⁷
[Ir(ppy)₂(dtbbpy)]PF₆ ([Ir-3]PF₆)	+0.83^b^,⁶⁸	–1.89^b^,⁶⁸	–1.34^b^,⁶⁸	+0.28^b^,⁶⁸
[Ir(ppy)₂(bpy)]PF₆ ([Ir-4]PF₆)	+0.87^b^,⁴⁶	–2.43^b^,⁴⁶	–1.79^b^,⁴⁶	+0.23^b^,⁴⁶
[Ir(dF(Me)ppy)₂(dtbbpy)]PF₆ ([Ir-5]PF₆)	+1.11^b^,⁶⁸	–1.81^b^,⁶⁹	–1.30^b^,⁶⁸	+0.59^b^,⁶⁸
[Ir(dF(CF₃)ppy)₂(dtbbpy)]PF₆ ([Ir-6]PF₆)	+1.31^b^,⁶⁸	–1.75^b^,⁶⁸	–1.59^b^,⁶⁸	+0.51^b^,⁶⁸
[Ir(dF(CF₃)ppy)₂(bpy)]PF₆ ([Ir-7]PF₆)	+1.38⁷⁰	–1.64⁷⁰	–1.30⁷⁰	+1.04⁷⁰
[Ir(dF(CF₃)ppy)₂(4,4′-d(CF₃)bpy)]PF₆ ([Ir-8]PF₆)	+1.55²⁹	–1.18²⁹	–0.89²⁹	+1.27²⁹
[Ir(dF(CF₃)ppy)₂(5,5′-d(CF₃)bpy)]PF₆ ([Ir-9]PF₆)	+1.56²⁹	–1.07²⁹	–0.81²⁹	+1.30²⁹

Eosin Y (EY)	–	–1.44^b^,^c^,⁷¹	–1.49^b^,^c^,⁷²	+0.45^b^,^c^,⁷¹
fluorescein (Fl)	–	–1.60^b^,^c^,⁷¹	–1.64^b^,^c^,⁷²	+0.36^b^,^c^,⁷²
rose bengal (RB)	–	–1.34^b^,^c^,⁷²	–1.40^b^,^c^,⁷²	+0.47^b^,^c^,⁷²

N-Me Mes-Acr⁺ClO₄^– and N-Me Mes-Acr⁺BF₄^–	–	–0.93^b^,⁷³	–	+1.70^d/+1.50^e^,^b^,^73,74
([Acr-1]ClO₄ and ([Acr-1]BF₄)	–
N-Ph Mes-Me₂-Acr⁺ ([Acr-2]BF₄)	–	–0.96^b^,⁷⁵	–	+1.71^b^,⁷⁵
N-Ph Mes-t-Bu₂-Acr⁺ ([Acr-3]BF₄)	–	–0.97^b^,⁷⁶	–	+1.70^b^,⁷⁶
methylene blue⁺Cl^– ([MB]Cl)	+0.75^b^,^f^,⁴⁵	–0.68^b^,^f^,⁴⁵	–1.11^d/–1.06^e^,^b^,^f^,⁴⁵	+1.18^d/+1.22^e^,^b^,^f^,⁴⁵

4CzIPN	+1.11^b^,⁷⁷	–1.59^b^,⁷⁸	–1.56^b^,⁷⁷	+0.97^b^,⁷⁸
4DPAIPN	+0.65^b^,⁷⁹	–2.03^b^,⁷⁹	–1.90^b^,⁷⁹	+0.52^b^,⁷⁹
3DPAFIPN	+0.92^b^,⁷⁷	–1.97^b^,⁷⁸	–1.76^b^,⁷⁷	+0.72^b^,⁷⁸
3DPA2FBN	+0.86^b^,^g^,⁷⁷	–2.30^b^,^g^,⁷⁷	–1.98^b^,^g^,⁷⁷	+0.54^b^,^g^,⁷⁷
DPZ	+0.99^b^,^g^,⁸⁰	–1.83^b^,^g^,⁸¹	–1.55^b^,⁸²	+0.53^b^,^g^,⁸¹

Potentials measured in V vs Fc⁺/Fc and measured in MeCN unless indicated.

Converted to Fc⁺/Fc from the reference electrode used in the original report according to Addison and co-workers.⁸³

Measured in 1:1 MeCN:H₂O.

From the singlet excited state.

From the triplet excited state.

Measured in H₂O.

Measured in CH₂Cl₂.