The spontaneous decarboxylation of strong carboxylic acid − carboxylate mixtures and the use of carbon surfaces to trap the released free radicals

Spontaneous Decarboxylation of Ferrocenecarboxylate using 1,4‐Benzoquinone as Oxidant: Application to the Chemical Grafting of Glassy Carbon Surfaces

“…[13,14] Other less explored examples of chemical grafting reactions are the spontaneous decomposition of alkynyl lithium compounds [15] and the decomposition of mixtures of strong carboxylic acids with its conjugated base. [16] This kind of processes are of great interest in the sense that the substrate not necessarily must be on the form of a compact material, but it can be also on the form carbon powders and non-conductive materials like polymers and biopolymers. [17] The spontaneous decomposition of aryldiazonium cations as a method to modify carbon surfaces and other substrates has been widely studied, and is influenced by different experimental conditions, for example, the nature of substrate and solvent, [4,18] microwave radiation [19] and by photochemical activation.…”

From Langmuir–Blodgett to Grafted Films

“…29,14 Combined reflection and diffraction measurements have been conducted to reveal structural features as the pressure increases in the film. 30 Electrografted films, 31 are obtained by electrochemical oxidation of amines 32 , carboxylates 33 , alcohols 34 or reduction 12,35,36 of diazonium salts, 12 and alkyl or aryl halides 35,36 . They result from the attack of very reactive radicals on the surface.…”

“…Electrografted films are obtained by electrochemical oxidation of amines, carboxylates, and alcohols or by reduction ,, of diazonium salts and alkyl or aryl halides. , They result from the attack of very reactive radicals on the surface. The bond dissociation energies (BDE) of the metal - and Si-aryl or alkyl films (obtained by reduction of diazonium salts or alkyl iodides) have been calculated by density functional theory methods, ,, and they vary from 100 to 293 kJ mol –1 from Au to Si indicating a strong bonding of the organic film .…”

“…With regard to metal-amine films, the electrografting mechanism has been established, but the formation of mono/multilayers has not been described in detail. The surface concentrations of different films covalently bonded to surfaces have been measured (films obtained by oxidation of nitrobenzyl amine, dopamine, protected anilines and ethylenediamine). Organic films obtained by electrografting amines have been used for flexible electronics, analytical purposes, and modification of graphene oxide .…”

Silver encapsulated copper salen complex: efficient catalyst for electrocarboxylation of cinnamyl chloride with CO2

“…Aer then, the acids yield dropped to 67% for 3.0 F mol À1 , which may be due to the decarboxylation of the formed carboxylate. 36 To check the inuence of current density, a set of electrolyses was performed in the range of 4 mA cm À2 to 10 mA cm À2 . As shown in Fig.…”