Designing artificial metalloenzymes by tuning of the environment beyond the primary coordination sphere

C Van Stappen, Y Deng, Y Liu, H Heidari… - Chemical …, 2022‏ - ACS Publications
Metalloenzymes catalyze a variety of reactions using a limited number of natural amino
acids and metallocofactors. Therefore, the environment beyond the primary coordination …

Second sphere effects on oxygen reduction and peroxide activation by mononuclear iron porphyrins and related systems

S Bhunia, A Ghatak, A Dey - Chemical Reviews, 2022‏ - ACS Publications
Activation and reduction of O2 and H2O2 by synthetic and biosynthetic iron porphyrin
models have proved to be a versatile platform for evaluating second-sphere effects deemed …

Enzyme‐inspired iron porphyrins for improved electrocatalytic oxygen reduction and evolution reactions

L **e, XP Zhang, B Zhao, P Li, J Qi, X Guo… - Angewandte …, 2021‏ - Wiley Online Library
Nature uses Fe porphyrin sites for the oxygen reduction reaction (ORR). Synthetic Fe
porphyrins have been extensively studied as ORR catalysts, but activity improvement is …

Adapting Synthetic Models of Heme/Cu Sites to Energy‐Efficient Electrocatalytic Oxygen Reduction Reaction

J Meng, H Qin, H Lei, X Li, J Fan, W Zhang… - Angewandte …, 2023‏ - Wiley Online Library
In nature, cytochrome c oxidases catalyze the 4e− oxygen reduction reaction (ORR) at the
heme/Cu site, in which CuI is used to assist O2 activation. Because of the thermodynamic …

Improving Active Site Local Proton Transfer in Porous Organic Polymers for Boosted Oxygen Electrocatalysis

Q Zhao, Q Zhang, Y Xu, A Han, H He… - Angewandte Chemie …, 2024‏ - Wiley Online Library
Improving proton transfer is vital for electrocatalysis with porous materials. Although several
strategies are reported to assist proton transfer in channels, few studies are dedicated to …

Advances in the molecular catalysis of dioxygen reduction

CW Machan - ACS Catalysis, 2020‏ - ACS Publications
The reduction of dioxygen (O2) is of vital importance to energy-related reactions. In biology,
respiration uses O2 reduction as a thermodynamic sink, whereas fuel cells pair the oxygen …

Regulating Steric Effect of Cobalt Corroles for Promoted Oxygen Electrocatalysis

Y Xu, X **, J Zhang, H Qin, B Mei, T Liu, S Lei… - ACS …, 2024‏ - ACS Publications
Regulating catalyst steric effects is commonly used in organic chemistry but is relatively
much less explored in O2 activation. Herein, we report on the steric effect of Co corroles on …

Selectivity-Determining Steps in O2 Reduction Catalyzed by Iron(tetramesitylporphyrin)

AC Brezny, SI Johnson, S Raugei… - Journal of the American …, 2020‏ - ACS Publications
The oxygen reduction reaction (ORR) is the cathode reaction in fuel cells and its selectivity
for water over hydrogen peroxide production is important for these technologies. Iron …

Engineering metalloprotein functions in designed and native scaffolds

F Nastri, D D'Alonzo, L Leone, G Zambrano… - Trends in biochemical …, 2019‏ - cell.com
Metalloproteins are crucial for life. The mutual relationship between metal ions and proteins
makes metalloproteins able to accomplish key processes in biological systems, often very …

Iron Dioxygen Adduct Formed during Electrochemical Oxygen Reduction by Iron Porphyrins Shows Catalytic Heme Dioxygenase Reactivity

S Samanta, S Sengupta, S Biswas… - Journal of the …, 2023‏ - ACS Publications
Heme dioxygenases oxidize the indole ring of tryptophan to kynurenine which is the first
step in the biosynthesis of several important biomolecules like NAD, xanthurenic acid, and …