Abstract
Multicolored polyanilines (PANIs) are synthesized by using different acid dyes containing sulfonic acid group as the functional dopant. It is found that the FTIR spectra of the acid dye doped PANI and pure PANI are similar with each other, which are all doped state PANI, and the new arising peaks indicate the acid dyes existing in the PANI molecular. The UV-Visible spectra show that the different acid dye doped PANI present different colors as the effect of the chromophore of the acid dye. From the CV curves, it is clear that all the acid dye doped PANIs exist two pairs of oxidation and reduction peaks with vivid reversibly multicolor changes from light color (-0.5~0V) to dark color (0~0.8V). It is shown that acid dye doping is an effective method to broaden the color change range of the electrochromic mateials.
Highlights
As a kind of electrochromic material (ECM), conducting polymer has become one of the most important fields in functional material science due to its highly controlled conjugated molecular structure, flexible mechanical property, rapid response, excellent coloration efficiency and long life and many other specialties, which can be used widely in large-area display[1,2], storage devices[3], military camouflage[4], smart windows[5], anti-glare mirrors for cars[6] and so on
The band at 1034cm-1 assigned to the stretching vibration of S=O of sulfonic acid group, and two bands at 704cm-1and 603cm-1 attributed to the stretching vibration of C-S and S-O respectively, are appeared only for acid dye doped PANI, which is different from the pure PANI[7] and indicating the molecules of acid dye have existed in PANI molecules
Multicolored PANIs doped by different acid dyes are prepared by chemical oxidation
Summary
As a kind of electrochromic material (ECM), conducting polymer has become one of the most important fields in functional material science due to its highly controlled conjugated molecular structure, flexible mechanical property, rapid response, excellent coloration efficiency and long life and many other specialties, which can be used widely in large-area display[1,2], storage devices[3], military camouflage[4], smart windows[5], anti-glare mirrors for cars[6] and so on. The paper proposed a method to enrich the color range of electrochromic mateials
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
