Electrodeposition of conductive poly(3-methoxythiophene) in ionic liquid microemulsions

Low-potential electrosynthesis of a novel nitrogen analog of PEDOT in an ionic liquid and its optoelectronic properties

“…The vibration modes from the C-S bond in the thiophene ring could be seen at 670 cm-1, while the strong absorption band at 838 cm-1 was attributed to the dopant anion PF6-during doping process, which was corresponding to the reported literatures [41,42]. In Table 1 The low-energy peak had an absorption maximum at 603 nm for PMDTO, which was assumed as a result of the π-π* absorption, implying the existence of conjugated segments in the polymer.…”

Electrosyntheses of free-standing poly(thiophene-3-acetic acid) film in mixed electrolytes of boron trifluoride diethyl etherate and trifluoroacetic acid

“…These differences between the doped and dedoped PTAA films were mainly due to the migration of counteranion out of the polymer film and the gradual solubility of oligomer from the electrode to the solution during the dedoping proesses, which broke the smooth surface of the doped PTAA film. The conductivity of the doped PTAA film obtained from BFEE + 25% TFA was measured to be 7 S cm −1 , which was similar to the value of poly(3-(6-Bromohexyl)Thiophene) (20 S cm −1 ) [40] , higher than the value of poly(3-chlorothiophene) (0.1 S cm −1 ) [27] , poly(3-phenylthiophene) (0.01 S cm −1 ) [44] and poly(3-methoxythiophene) (3.8 S cm −1 ) [41] . Additionally, the electrical conductivity of dedoped PTAA film was measured to be 10 −6 S cm −1 .…”

“…The weight loss was about 97.50% when the temperature reached 500 K. These results indicate that the thermal stability of PTAA is better than TAA. Moreover, PTAA has higher thermal stability than most of the conducting polymers reported previously, such as poly(3-[4-(4-pentyl-cyclohexyl)-phenyl]-thiophene) (502 K) [35] , poly(3-methoxythiophene) (626 K) [41] , poly(9-aminofluorene) (395−551 K) [42] and poly(9-hydroxyl-9-fluorenecarboxylic acid) (500−650 K) [43] . Therefore, it can be concluded that the as-prepared PTAA film displays high decomposition temperatures, indicating that it can be applied in a wide temperature scale and suitable for some potential applications.…”

“…7(a), three peaks at δ = 7.13, 6.89, and 6.78 are assigned to the protons at the C(2), C(3), and C(5) positions (in the inset of Fig. 7), respectively [40,41] . In the same region, there is only one broad peak at δ = 6.98 for the polymer, corresponding to the C-H bond at the C(3) position.…”

Alkyl functionalized bithiophene end-capped with 3,4-ethylenedioxythiophene units: synthesis, electropolymerization and the capacitive properties of their polymers

“…3B), the corresponding maximal decomposition of the polymers appeared at 695 K (PBEDOT-BT-BH), 700 K (PBEDOT-BT-BO), and 707 K (PBEDOT-BT-BD), respectively. Which were all higher than that of PEDOT (642 K) [44], PEDTT (656 K) [39], poly(3-methoxythiophene) (PMOT) (626 K) [45], and PTh (500 K) [44]. All these phenomena indicated that these polymer films had a good thermal stability, which is beneficial to their use in supercapacitors.…”