Fluorescence quenching rate constants, kq, ranging from 106 to 2 × 1010 M−1 sec−1, of more than 60 typical electron donor-acceptor systems have been measured in de-oxygenated acetonitrile and are shown to be correlated with the free enthalpy change, ΔG23, involved in the actual electron transfer process

in the encounter complex and varying between + 5 and −60 kcal/mole. The correlation which is based on the mechanism of adiabatic outer-sphere electron transfer requires ΔG≠23, the activation free enthalpy of this process to be a monotonous function of ΔG23 and allows the calculation of rate constants of electron transfer quenching from spectroscopic and electrochemical data.

A detailed study of some systems where the calculated quenching constants differ from the experimental ones by several orders of magnitude revealed that the quenching mechanism operative in these cases was hydrogen-atom rather than electron transfer.

The conditions under which these different mechanisms apply and their consequences are discussed.

Kinetics of Fluorescence Quenching by Electron and H‐Atom Transfer

Electrochemistry represents one of the most intimate ways of interacting with molecules. This review discusses advances in synthetic organic electrochemistry since 2000. Enabling methods and synthetic applications are analyzed alongside innate advantages as well as future challenges of electroorganic chemistry.

Synthetic Organic Electrochemical Methods Since 2000: On the Verge of a Renaissance

The interaction between an electronically excited photocatalyst and an organic molecule can result in the genertion of a diverse array of reactive intermediates that can be manipulated in a variety of ways to result in synthetically useful bond constructions. This Review summarizes dual-catalyst strategies that have been applied to synthetic photochemistry. Mechanistically distinct modes of photocatalysis are discussed, including photoinduced electron transfer, hydrogen atom transfer, and energy transfer. We focus upon the cooperative interactions of photocatalysts with redox mediators, Lewis and Bronsted acids, organocatalysts, enzymes, and transition metal complexes.

http://pubs.acs.org/doi/pdf/10.1021/acs.chemrev.6b00018

Dual Catalysis Strategies in Photochemical Synthesis

Some pertinent results and views from the earlier history of lignin chemistry, pointing to the importance of the arylpropane skeleton, are outlined. Later development, beginning with the dehydrogenation theory and experimental studies on the dehydrogenative polymerization of p-hydroxycinnamyl alcohols, is then reviewed. Finally, recent degradative work resulting in a detailed picture of lignin structure is discussed.

Lignin chemistry—past, present and future

http://dns2.asia.edu.tw/~ysho/ysho-english/1000 wc/pdf/j ele che52, 355.pdf

Adsorption, autoinhibition and autocatalysis in polarography and in linear potential sweep voltammetry

/pdf/electroorganic-preparations-vi-reduction-of-compounds-1ywnebfu0k.pdf

Electroörganic Preparations. VI. Reduction of Compounds Containing the Azomethine Group.

/pdf/electroorganic-preparations-iv-oxidation-of-aromatic-9qapb2k9h3.pdf

Electroorganic Preparations. IV. Oxidation of Aromatic Hydrocarbons.

https://iopscience.iop.org/article/10.1149/1.1462037/pdf

A Century of Organic Electrochemistry

Anion radicals and dianions as electron transfer reagents

/pdf/identification-of-volatile-compounds-in-seven-edible-fresh-37ug80ml6a.pdf

Henning Lund

Papers

Electroörganic Preparations. VI. Reduction of Compounds Containing the Azomethine Group.

Electroorganic Preparations. IV. Oxidation of Aromatic Hydrocarbons.

A Century of Organic Electrochemistry

Anion radicals and dianions as electron transfer reagents

Identification of Volatile Compounds in Seven Edible Fresh Mushrooms.