A bis(2-oxoindolin-3-ylidene)-benzodifuran-dione containing copolymer for high-mobility ambipolar transistors

Abstract

A bis(2-oxoindolin-3-ylidene)-benzodifuran-dione (BIBDF)-based low band gap polymer (PBIBDF-BT), containing a solubilizing alkyl chain bithiophene unit as a donor, has been synthesized. The polymer with a low-lying LUMO/HOMO energy level (-4.03/-5.55 eV) exhibits efficient ambipolar charge transport. The electron and hole mobilities are as high as 1.08 and 0.30 cm(2) V(-1) s(-1), respectively.

Recent Advances in Ambipolar Transistors for Functional Applications

“…Polymer materials with advantages of superior viscosity, thermal, mechanical and simple processing characteristics have been proverbially employed in photovoltaics (PV), transistors, light‐emitting diodes, logic circuits, sensors, etc . Particularly, D–A polymers that possess noncovalent intramolecular interactions for efficient π‐conjugation and close stacking ensuring intermolecular charge hopping have been extensively investigated . The conjugated polymers consisting of donors including selenophenes and thiophenes and acceptors comprising DPPs, NDIs, isoindigos, thiadiazolopyridine, naphthalenedicarboximide, and benzothiadiazole are mainly synthesized via Stille, Suzuki, and direct arylation polycondensation.…”

Solution‐Processed Microporous Semiconductor Films for High‐Performance Chemical Sensors

“…Several p‐type or n‐type organic semiconductors, such as pentacene, dialkyl tetrathiapentacene (DTBDT‐C6), poly(3‐hexylthiophene) (P3HT), copper phthalocyanine (CuPc), and naphthalene diimides fused with 2‐(1,3‐dithiol‐2‐ylidene)malonitrile groups (NDI(2OD)(4tBuPh)‐DTYM2), have been used as materials for chemical gas sensors with varying sensing properties towards analyte species, including NH 3 , SO 2 , NO 2 , dimethyl methylphosphonate (DMMP), H 2 O 2 , acetone, toluene, and halothane. In the present study, a previously reported donor–acceptor (D–A), conjugated, low bandgap polymer based on bithiophene and bis(2‐oxoindolin‐3‐ylidene)‐benzodifuran‐dione (BIBDF), namely PBIBDF‐BT (Figure b), is used as an active layer of the transistor. A continuous PBIBDF‐BT film could generally be obtained through spin coating of a single‐component PBIBDF‐BT solution on silicon substrates.…”

Benzodithiophene and benzotrithiophene-based conjugated polymers for organic thin-film transistors application: Impact of conjugated- and acyl-side chain

“…To pursue high mobility, many new conjugated polymers have been designed and synthesized, and encouraging progress has been made with hole mobility of OTFTs up to 10 cm 2 V À1 s À1 and electron mobilities over 1 cm 2 V À1 s À1 in the past few years [4][5][6][7][8]. Solution processable conjugated polymers generally contain two parts: p-conjugated backbone and flexible solubilizing side chains.…”