The Electropolymerization Of Conducting Polymer With Lyotropic Liquid Crystal Template

Conducting polymers have become one of the most popular new materials in recentyears. The properties of polymer are attributed to its particles and morphology with specialsize and sharp. The conducting polymers with ordered structures and morphology draw moreand more public attentions. It is a useful way to synthesize ordered conducting polymers intemplates with special structures, which control the growth and assembly of conductingpolymers. Lyotropic liquid crystal, as a kind of template, has drawn more and more attentionsbecause of its various kinds and structures as well as its pre-designed and adjusted size of theinternal micro area. In this paper three kinds of lyotropic liquid crystals, based on chitosan,L-KDA and SDS separately, were used as templates for electropolymeriztion ofpoly(3,4-ethylenedioxythiophene)(PEDOT). The properties of PEDOT were also discussed inthe text.1. Ordered poly(3,4-ethylenedioxythiophene)(PEDOT) was successfully prepared byelectrochemical polymerization of3,4-ethylenedioxythiophene in lyotropic liquid crystalphase formed by chitosan in an acetic acid solution. The structure, performance, andmorphology of PEDOT were characterized by infrared absorption spectra(IR), energydispersive X-Ray spectroscopy(EDX), cyclic voltammograms(CV), polarizing opticalmicroscopy(POM), fluorescence spectrum(FLU) and scanning electron microscopy(SEM).The template can be easily removed by washing. The ordered pure PEDOT film exhibitedobvious birefringence. As-formed PEDOT was found to be a typical red-orange-emitter withmaximum emission at620nm and concurrently exhibited good electroactivity.2. Poly(3,4-ethylenedioxythiophene)(PEDOT) was successfully prepared in lyotropicliquid crystal phase formed by L-KDA and decanol in water by electrochemicalpolymerization of3,4-ethylenedioxythiophene. The structure, performance, and morphologyof PEDOT were characterized by infrared absorption spectra(IR), cyclic voltammograms(CV),polarizing optical microscopy(POM), fluorescence spectrum(FLU), thermogravimetricanalysis (TGA) and scanning electron microscopy(SEM). The ordered pure PEDOT film withgood electrochemical behavior exhibited good thermal stability. 3. Ordered poly(3,4-ethylenedioxythiophene)(PEDOT) was successfully prepared inlyotropic liquid crystal phase formed by SDS in water. The structure, performance, andmorphology of PEDOT were characterized by infrared absorption spectra(IR), cyclicvoltammograms(CV), polarizing optical microscopy(POM), fluorescence spectrum(FLU) andscanning electron microscopy(SEM). The ordered pure PEDOT film with goodelectrochemical behavior exhibited good thermal stability.