Mechanoresponsive Self‐Assembled Perylene Bisimide Films. Issue 44 (8th July 2020)

• Record Type: Journal Article
• Authors: Adams, Victoria; Cameron, Joseph; Wallace, Matthew; Draper, Emily R.
• Is Part Of: Chemistry. Volume 26:Issue 44(2020)
• Page Start: 9879
• Page End: 9882
• Publication Date: 2020-07-08
• Subjects: flexible -- organic electronics -- perylene -- self-assembly -- smart materials; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.202001805
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: In this work, self‐assembled amino‐acid appended perylene bisimides (PBIs) have been studied that when processed into thin films change their resistivity in response to being bent. The PBIs assemble into structures in water and form thin films upon drying. These normally delicate thin films can be tolerant to bending, depending on the aggregates they form. Furthermore, the films then reversibly change their resistivity in response to this mechanical stimulus. This change is proportional to the degree of bending of the film giving them the potential to be used quantitatively to measure mechanical movement, such as in wearable devices. Abstract : Exploring how the self‐assembly of three different perylene bisimide structures in solution has an effect on the final properties of a dried thin film. These structures were characterized by aligning under shear and under a magnetic field. It was found that how they dry into a film has a major effect on their use in flexible conductive materials and it was demonstrated how this resistivity is proportional to the angle they are being bent at.