In 2022,Zhang, Yuhang; Li, Rui; Chang, Lijing; Ma, Yang; Hou, Yanjun; Niu, Haijun published an article in Macromolecular Chemistry and Physics. The title of the article was 《Electropolymerization of thiophene-based monomers with different spatial structures: the impact of monomer structure on electrochromic properties》.HPLC of Formula: 3141-27-3 The author mentioned the following in the article:
The development prospect of conductive electrochromic (EC) polymers requires the design of polymers with high performance and good stability. Here, a new scheme is designed to enhance EC properties by adjusting the monomer mol. structure. Four monomers with different structures based on thiophene and 3,4-ethylenedioxythiophene (EDOT) are designed and synthesized. The corresponding polymer films (P1, P2, P3, and P4) are prepared by electrochem. polymerization at low applied potential. The spatial structure-performance relationship of precursors with different structures and polymers is systematically discussed. In the electropolymerization experiments, it is noted that P3 has no EC property. This may be connected to the spatial structure of P3 polymerization which is not suitable for charge transporting. By contrast, the other three polymers exhibit excellent electrochem. properties. The diffusion rate higher of P1 has also been corroborated by using electrochem. impedance spectroscopy (EIS) spectrum. The P1 film has the best stability and fastest colorized time among the samples; such superior electrochem. property may be associated with the closely stacked formed by the unique sheet-like spatial structure. The design of the space structure has a significant impact on the optical and elec. properties of the polymer film. In the experiment, the researchers used many compounds, for example, 2,5-Dibromothiophene(cas: 3141-27-3HPLC of Formula: 3141-27-3)
2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene may be used as starting reagent for the synthesis of α,α′-didecylquater-, -quinque- and -sexi-thiophenes.HPLC of Formula: 3141-27-3
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary