Synthesis and characterization of polyindene synthesized by cationic polymerization of indene using maghnite as catalyst

Maghnite‐H+ Catalytic Synthesis and Characterization of Polyindenes and Oxidized Derivatives

“…This effect was also observed by other authors . This is assigned to the increase in the polymerization reaction rate with temperature, leading to a larger product formation during a fix reaction time …”

“…As stated in the Introduction section, 1 H‐NMR spectroscopy previously revealed that the polymers obtained by the studied polymerization route at different temperatures (see supporting information) are essentially polyindenes . These polymers are referred to as PInT , being T the different reaction temperature.…”

“…The dimensions of the polymeric chains may affect in the conductivity. Thus, the oxidized polyindenes synthesized at higher temperature (PInO80), whose polymerization proceeds more rapidly, are formed of polymeric chains of lower molecular weight, what could explain its lower conductivity compared to PInO60.…”

“…Interestingly, H + ‐exchanged montmorillonite, like Maghnite‐H + (Mag‐H + ), has been proposed as a non‐toxic and cheaper acid catalyst to initiate cationic polymerizations of vinyl and heterocyclic monomers . Indeed, the synthesis of PIn by cationic polymerization of indene in CH 2 Cl 2 with Mag‐H + clay was previously reported . To simplify the procedure, CH 2 Cl 2 was neither deaerated nor specifically dehydrated.…”