Naphthalene, Electrochemical Oxidation structure

Copolymers containing alternating l,4-bis(phenylethenyl)benzene, l,4-bis(phenylethenyl)-2,5-dimethoxybenzene or l,5-bis(phenylethenyl)naphthalene chromophores, and dibenzo-24-crown-8 spacers within the polymer backbone, best represented by 87, showed blue light emission in solution, and tunable photoluminescence and electroluminescence depending on the structure of the chromophore. Blends of these copolymers with a small amount of poly(ethylene oxide), and lithium salt as active layers, form efficient light-emitting electrochemical cells <2003JMC800>. 

In the following we want, therefore, to describe first the structure of the simplest organic metal derived from as simple molecules as naphthalene or other arenes. These structures help to understand the type of intermolecular interactions necessary to produce a quasi-metallic state in organic systems. The structure and the structural changes upon oxidation ("doping") of poly(acetylene) will then be described. A description of these chemical reactions and their implications for the electronic and vibronic spectra will follow. Finally, some other conducting polymers or oligomers will be described and the use of such materials in electrochemical cells will be discussed as well. 

In addition to PPy and PTh derivatives, numerous reports have focused on the synthesis and the properties of electroactive polymer films electrogenerated from the oxidation of crown ether-substituted benzenes [273-286] and naphthalenes [17, 287-293]. Among them, poly(dibenzo-crown ether)s and, especially, poly(dibenzo-18-crown-6) have been the most extensively studied, owing to their remarkable structural, electrochemical, and complexing properties [278-280]. Furthermore, their affinity for a large variety of cations, including heavy metal and precious metal cations, was greatly improved when they were previously undoped [281-286]. 

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