Nature-Inspired Semiconducting Polymers with Peptide Conjugation Breakers for Intrinsically Stretchable and Self-Healable Transistors

Intrinsically Elastic Semiconductors through Aldehyde–Amine Polycondensation and Its Application on Stretchable Transistor

“…The detailed capacitance of the dielectric at different strain is summarized in Table S6. Moreover, the interfacial mismatch is generated by the fabrication process, and the resistance of PEDOT:PSS/SWCNT is higher in comparison with gold. , For the reference polymer P­(DPP-DPP), an abrupt drop in mobilities is exhibited (from 0 to 25% strain) in which the initial mobility of 0.10 cm 2 ·V –1 ·s –1 decreases to 10 –5 cm 2 ·V –1 ·s –1 . In comparison, the P­(DPP-DPP)-PDMS 0.4 device demonstrates significant retention of mobilities in the parallel and direction.…”

Designer Conjugation-Break Spacer That Boosts Charge Transport in Semiconducting Terpolymers

“…Conjugated polymers (CPs) offer appealing advantages such as good solution processability, excellent mechanical flexibility, diverse molecular design, and tunable optoelectronic properties over inorganic silicon, which make them promising for applications in organic field-effect transistors (OFETs), − organic solar cells, − organic light-emitting diodes, and other electronic devices. − Great advances have been made in improving the charge carrier transport properties of CPs, primarily through the development of innovative electroactive building blocks. − It is well understood that rigid structures and coplanar geometries are favorable for strengthening intermolecular interactions and promoting tight interchain stacking, both being essential for effective intermolecular charge carrier transport. − In addition, in order to maximize the conjugation length to facilitate intrachain charge transport, those building blocks are designed to possess a fully π-conjugated skeleton, typically composed of sp 2 -hybridized carbons which constitute alternating single and double carbon–carbon bonds. − Constrained by these conventional perceptions, nonconjugated building blocks are typically excluded from being used for high-mobility CPs as they are electronically not favorable for charge delocalization and transport. In fact, for the rare instances where conjugation-break spacers (CBSs) have been incorporated into the backbone of CPs, the attention has been solely directed toward the use of flexible, nonconjugated moieties such as aliphatic or amide-containing segments, for regulating the solution processability and mechanical property of polymers. ,, While inclusion of such flexible linkers was successful in adjusting the solubility and film stretchability, , such modifications have inevitably compromised charge carrier transport after disrupting π-electron delocalization along the polymer backbone and weakening interchain interactions, potentially deterring further strategic use of CBS in CPs (Scheme a). , …”