Rapid formation of small mixed-valence luminescent silver clusters via cation-coupled electron-transfer in a redox-active porous ionic crystal based on dodecamolybdophosphate

Nanoscale ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 5460-5466 ◽  
Author(s):  
Sayaka Uchida ◽  
Tomoki Okunaga ◽  
Yuki Harada ◽  
Shotaro Magira ◽  
Yasuto Noda ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Ionic Crystal ◽  
Mixed Valence ◽  
Silver Clusters ◽  
Redox Active ◽  
Rapid Formation

Rapid formation of small mixed-valence luminescent silver clusters via cation-coupled electron-transfer by redox-active polyoxometalate-based porous crystals is reported.

scholarly journals Electrical conductivity in two mixed-valence liquids

2015 ◽  
Vol 17 (21) ◽  
pp. 14107-14114 ◽  
Author(s):  
Wenzhi Yao ◽  
Steven P. Kelley ◽  
Robin D. Rogers ◽  
Thomas P. Vaid
Keyword(s):  
Electrical Conductivity ◽  
Electron Transfer ◽  
Exchange Rate ◽  
Rate Constants ◽  
Room Temperature ◽  
Mixed Valence ◽  
Electrical Current ◽  
Active Species ◽  
Redox Active

Two mixed-valence room-temperature liquids are reported: BuFc–[BuFc+][NTf2−] (BuFc = n-butylferrocene) and TEMPO–[TEMPO+][NTf2−]. Both are conductors of DC electrical current, and their conductivity is modeled based on the electron-transfer self-exchange rate constants of their constituent redox-active species.

scholarly journals Long range charge transfer in trimetallic mixed-valence iron complexes mediated by redox non-innocent cyanoacetylide ligands

2014 ◽  
Vol 43 (17) ◽  
pp. 6291-6294 ◽  
Author(s):  
Josef B. G. Gluyas ◽  
Andrew J. Boden ◽  
Samantha G. Eaves ◽  
Herrick Yu ◽  
Paul J. Low
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Long Range ◽  
Mixed Valence ◽  
Iron Complexes ◽  
Redox Active

A redox active 9-atom, 10-bond –CC–CN{Fe(dppx)2}NC–CC– bridge is shown to be effective at promoting electron transfer between metal centres separated by some 15 Å.

Intramolecular Electron Transfer Mediated by a Tetrathiafulvalene Bridge in a Purely Organic Mixed-Valence System

2003 ◽  
Vol 42 (24) ◽  
pp. 2765-2768 ◽  
Author(s):  
Nicolas Gautier ◽  
Frédéric Dumur ◽  
Vega Lloveras ◽  
José Vidal-Gancedo ◽  
Jaume Veciana ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Mixed Valence ◽  
Intramolecular Electron Transfer

scholarly journals Insight to Microbial Fe(III) Reduction Mediated by Redox-Active Humic Acids with Varied Redox Potentials

2021 ◽  
Vol 18 (13) ◽  
pp. 6807
Author(s):  
Jingtao Duan ◽  
Zhiyuan Xu ◽  
Zhen Yang ◽  
Jie Jiang
Keyword(s):  
Molecular Weight ◽  
Electron Transfer ◽  
Humic Acids ◽  
Weight Fraction ◽  
Electrochemical Analysis ◽  
Microbial Reduction ◽  
Redox Potentials ◽  
Groundwater Environment ◽  
Redox Active ◽  
Different Molecular Weight

Redox-active humic acids (HA) are ubiquitous in terrestrial and aquatic systems and are involved in numerous electron transfer reactions affecting biogeochemical processes and fates of pollutants in soil environments. Redox-active contaminants are trapped in soil micropores (<2 nm) that have limited access to microbes and HA. Therefore, the contaminants whose molecular structure and properties are not damaged accumulate in the soil micropores and become potential pollution sources. Electron transfer capacities (ETC) of HA reflecting redox activities of low molecular weight fraction (LMWF, <2.5) HA can be detected by an electrochemical method, which is related to redox potentials (Eh) in soil and aquatic environments. Nevertheless, electron accepting capacities (EAC) and electron donating capacities (EDC) of these LMWF HA at different Eh are still unknown. EDC and EAC of different molecular weight HA at different Eh were analyzed using electrochemical methods. EAC of LMWF at −0.59 V was 12 times higher than that at −0.49 V, while EAC increased to 2.6 times when the Eh decreased from −0.59 V to −0.69 V. Afterward, LMWF can act as a shuttle to stimulate microbial Fe(III) reduction processes in microbial reduction experiments. Additionally, EAC by electrochemical analysis at a range of −0.49–−0.59 V was comparable to total calculated ETC of different molecular weight fractions of HA by microbial reduction. Therefore, it is indicated that redox-active functional groups that can be reduced at Eh range of −0.49–−0.59 are available to microbial reduction. This finding contributes to a novel perspective in the protection and remediation of the groundwater environment in the biogeochemistry process.

ChemInform Abstract: [V16O38(CN)]9-: A Soluble Mixed-Valence Redox-Active Building Block with Strong Antiferromagnetic Coupling.

ChemInform ◽  
2012 ◽  
Vol 43 (45) ◽  
pp. no-no
Author(s):  
Tony D. Keene ◽  
Deanna M. D'Alessandro ◽  
Karl W. Kraemer ◽  
Jason R. Price ◽  
David J. Price ◽  
...  
Keyword(s):  
Building Block ◽  
Mixed Valence ◽  
Antiferromagnetic Coupling ◽  
Redox Active
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