Radiation chemistry as an alternative way for the synthesis of PEDOT conducting Polymers under “soft” Conditions

Radiation‐Induced Synthesis of Nanostructured Conjugated Polymers in Aqueous Solution: Fundamental Effect of Oxidizing Species

“…[16] Note that although HOC radicals oxidize EDOT monomers, O 2 C À species remain unreactive. [16] Note that although HOC radicals oxidize EDOT monomers, O 2 C À species remain unreactive.…”

“…[16] Note that although HOC radicals oxidize EDOT monomers, O 2 C À species remain unreactive. [16] This demonstrates that PEDOT-radioinduced synthesis does not proceed through a chain reaction. Indeed, in contrast to the O 2 C À radical, HOC is a strong oxidizing species with a redox potential that amounts to E8' NHE (HOC/H 2 O) = 2.2 V NHE [27] at pH 7, (NHE = normal hydrogen electrode) which enables the oxidation of EDOT (the redox potential of which is about 1.4 V Ag/AgCl [26] ).…”

“…Despite all of these synthesis procedures, significant efforts are underway to explore alternative techniques intended to be used to synthesize new conjugated polymers. [16] g-Rays and X-rays are indeed very often used at ambient temperature and pressure to initiate, in the absence of any external chemical initiators, oxidation [17,18] or reduction [19,20] reactions through the control of the nature of the initiator radicals formed during water radiolysis; these radicals are dependent on the medium (atmosphere and solute). [15] We recently, and for the first time, used g-radiolysis as an original, simple alternative way to synthesize conjugated PEDOT polymers in solution.…”

“…[16] g-Rays and X-rays are indeed very often used at ambient temperature and pressure to initiate, in the absence of any external chemical initiators, oxidation [17,18] or reduction [19,20] reactions through the control of the nature of the initiator radicals formed during water radiolysis; these radicals are dependent on the medium (atmosphere and solute). [16] We demonstrated that radiation-induced PEDOT polymerization proceeds through a recurrent step-by-step mechanism that involves a recurrent oxidation process by hydroxyl radicals formed during water radiolysis. [23] Starting from EDOT monomers, radiolysis enabled us to prepare PEDOT under very soft conditions: in water in the absence of any solutes, at ambient temperature, and in open air.…”

Recent progress on nanostructured conducting polymers and composites: synthesis, application and future aspects

“…Lee et al [85] reported the synthesis of highly uniform PPy particles (100~500 nm in diameter) with a good electrical property by in-situ γ-irradiation/induced chemical oxidative polymerization method. Remita et al [86,87] did a systematical investigation on radiolytic synthesis of PEDOT nanostructures and related mechanism.…”