Recent progress in lactam‐based polymer semiconductors for organic electronic devices

Abstract

Numerous polymer semiconductor materials with alternating electron donorelectron acceptor (D-A) structures have attracted immense attention because they exhibit excellent semiconductor performance and solution processability. These materials can be used for the fabrication of various lightweight and flexible electronic devices. In this review, we provide a brief overview of the structural features and important properties of lactams whose performance can be enhanced by introducing an acceptor in the design of D-A-type polymer semiconductor materials. The focus is on polymer semiconductor materials with lactams in their structures, such as diketopyrrolo[3,4-c]pyrrole, naphthalene diimide, isoindigo, 2,2-bithiophene-3,3-dicarboximide, and thieno[3,4-c]pyrrole-4,6-dione. The recent advances made in the field in the last 3 years are discussed. In addition, the application of polymers for the fabrication of organic electronic devices and the progress in the field are discussed.

Hydrogen-Bond-Free Piperazine Polyamides with Ultralow Dielectric Loss

“…Dielectric materials are widely used in electronics, electric power engineering, communication engineering, and other fields. − With the development of electronic components for microminiaturization, integration, and flexibility, lighter, thinner, and more flexible organic thin-film dielectric materials have attracted wide attention from researchers. − …”

Rational Design of Novel Conjugated Terpolymers Based on Diketopyrrolopyrrole and Their Applications to Organic Thin-Film Transistors

“…Polymers 2023, 15, x FOR PEER REVIEW 2 of 14 diimide (PDI), and so on [9,10]. The acceptor units affect the lowest unoccupied molecular orbital (LUMO) energy level of the materials, which determines their ability to attract electrons.…”

“…N-type materials are mainly responsible for electron transport, and their research progress lags far behind that of P-type materials, which are responsible for hole transport [ 6 , 7 , 8 ]. The research on N-type materials is mainly constrained by the lack of diversity of acceptor species, and most of the selective acceptor species are concentrated in the systems of lactam structures, such as diketopyrrolopyrrole (DPP), isoindigo (IID), naphthalene diimide (NDI), perylene diimide (PDI), and so on [ 9 , 10 ]. The acceptor units affect the lowest unoccupied molecular orbital (LUMO) energy level of the materials, which determines their ability to attract electrons.…”

Spacer length effect of tributylsilyl-terminated side chains on the properties of poly(diketopyrrolopyrrole-alt-terthiophene)s

“…The solution processability and mechanical properties of conjugated polymers (CPs) make them attractive in the low-temperature preparation of the oncoming generation flexible electronics. 1–7 Thus far, the mobility of CP-based organic thin-film transistors (OTFTs) has surpassed that of amorphous silicon-based ones, attributed to the progress of materials design and device optimization. 8–14 As for material design, besides conjugated frameworks, side chains also greatly affect the properties of CPs, as side chains can not only act as solubilizing groups but also play an important role in determining intermolecular packing and film morphology.…”