Ultrafast and reversible thermochromism of a conjugated polymer material based on the assembly of peptide amphiphiles

Abstract

A continuous polydiacetylene fibre based on a peptide amphiphile is developed to exhibit ultrafast, reversible thermochromism, and a general and effective model is discovered to quantitatively predict the critical temperature of the chromatic transition.

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“…However,t he low reversibility and stability of polydiacetylenes limited their practical applications.T ot his end, side chains were incorporated that had peptide components that formed many hydrogen bonds to further enhance the properties. [113] Conjugated polymers that change color as ar esult of ac onformation change typically show al imited number of colors,f or example,b lue and red in the case of polydiacetylene.M ulticolored fibers were thus prepared by using conducting polymers as the electrochromic layer with stainless-steel wires as the two electrodes and apolymer gel as the electrolyte (Figure 6b). [114] These electrochromic fibers showed different colors on varying the applied voltages and depending on the electrochromic materials.The color changes were achieved rapidly at low voltages (millisecond level).…”

Parallelogram plate shaped foldecture from the controlled self-assembly of α/β-peptide foldamer

“…These unique peaks have been observed in other types of foldecture and closely predict crystallinity [6,8]. We interpreted the endothermic peak at 88 C as resulting from the dissociation of highly-ordered building blocks [18,19] in foldecture PP. The exothermic peak was presumably caused by energy released during the rearrangement of the molecular lattice [6] and may indicate the presence of a more stable, high-temperature isoform [20] because the weight loss did not occur at the same temperature in TGA analysis.…”

Electroswitchable optical device enabling both luminescence and coloration control consisted of fluoran dye and 1,4-benzoquinone

“…Several thermosensitive multifunctional materials showing tunable emission and/or coloration have been developed by using phase transitions of liquid crystals [33,34], changes in the conformation of organic and inorganic compounds [35,36], and the fluoran dye-developer system [14,16,19]. Photoresponsive multifunctional systems that show both tunable emission and coloration have also been reported previously; these systems consist of a photochromic diarylethene derivative associated with a luminescent moiety [26,37,38].…”