Understanding the key factors influencing mechanical and electrical properties of semiconducting polymers is crucial to development stretchable electronics. In this work, a high-mobility diketopyrrolopyrrole-based conjugated polymer with varied number-average molecular weights (Mn) was used as model system explore impact weight on properties. Higher-Mn films are more ductile stretchable. Both hole mobilities thin-film transistors elastic modulus become maximum at moderate Mn 88 kg/mol. It...

Abstract High‐performance unipolar n‐type conjugated polymers (CPs) are critical for the development of organic electronics. In current paper, four “weak donor–strong acceptor” CPs based on pyridine flanked diketopyrrolopyrrole (PyDPP), namely PPyDPP1‐4FBT, PPyDPP2‐4FBT, PPyDPP1‐4FTVT, and PPyDPP2‐4FTVT, synthesized via direct arylation polycondensation by using 3,3′,4,4′‐tetrafluoro‐2,2′‐bithiophene (4FBT) or ( E )‐1,2‐bis(3,4‐difluorothien‐2‐yl)ethene (4FTVT) as weak donor unit. All...

Aggregation-structure formation of conjugated polymers is a fundamental problem in the field organic electronics and remains poorly understood. Herein, molar mass dependence aggregation structure high-mobility copolymer (TDPP-Se) comprising thiophene-flanked diketopyrrolopyrrole selenophene thoroughly shown. Five batches TDPP-Se are prepared with number-average molecular weights (Mn ) varied greatly from 21 to 135 kg mol-1 . Small-angle neutron scattering transmission electron microscopy...

Abstract High‐quality solid electrolyte interphase (SEI) layers can effectively suppress the growth of Li dendrites and improve cycling stability lithium metal batteries. Herein, 1‐(6‐bromohexanoyl)‐3‐butylurea is used to construct an organic/inorganic hybrid (designated as LiBr‐HBU) SEI layer that features a uniform compact structure. The LiBr‐HBU exhibits superior wettability air well strong attachment foils. achieves + conductivity 2.75 × 10 −4 S cm −1 , which ≈50‐fold higher than value...

To simultaneously obtain outstanding stretchability, strength, and charge mobility of conjugated polymers (CPs) has remained a challenge for the field stretchable electronics to date. Herein, we propose strategy increasing molecular weight near-amorphous CP poly(indacenodithiophene-co-benzothiadiazole) (IDT-BT) an ultrahigh level overcome trade-off. Detailed weight-dependent study confirms that can enhance mechanical transport properties IDT-BT, owing higher extent chain entanglement larger...

Abstract Nine diketopyrrolopyrrole (DPP)‐based conjugated polymers (CPs), that is, poly(diketopyrrolopyrrole‐ alt ‐terchalcogenophene)s, via combinations of furanyl‐(FDPP), thienyl‐(TDPP), selenophenyl‐DPP (SeDPP) and furan, thiophene, selenophene comonomers, are synthesized to explore the chalcogen effect on solubility, film morphology/microstructure, charge transport property resultant polymers. All except for SeDPP‐Se soluble in non‐chlorinated solvents such as o ‐xylene tetralin....

The catalytic activities displayed by single-atom catalysts (SACs) depend on the coordination structure. SACs supported carbon materials often adopt saturated structures with uneven distributions because they require high-temperature conditions during synthesis. Herein, bisnitrogen-chelated Co that are coordinatively unsaturated prepared integrating a complex into conjugated microporous polymer (CMP-CoN2). Compared analogues, i.e., tetranitrogen-chelated (denoted as CMP-CoN4), CMP-CoN2...

Abstract Herein, a simple structure, nonchlorinated solvent processable high mobility donor–acceptor conjugated polymer, poly(2,5‐bis(4‐hexyldodecyl)‐2,5‐dihydro‐3,6‐di‐2‐thienyl‐pyrrolo[3,4‐ c ]pyrrole‐1,4‐dione‐alt‐thiophene) (PDPPT3‐HDO), is reported. The enhanced solubility in realized based on denser alkyl side chains strategy by incorporating small size comonomer thiophene. An associated benefit of thiophene the remarkable structural simplicity resulting which advantageous for...

Abstract The realization of high‐performance n‐type organic thin‐film transistors (OTFTs) via solution processing remains challenging, while these devices are considered highly desirable as basic elements for circuits. Apart from the designing semiconducting materials, controlling microstructures using specific techniques is also effective to enhance OTFT performance. In this work, bar coating—a meniscus‐guided and high throughput production compatible technique—is utilized orient a...

The development of low-band gap conjugated polymers with strong absorption in the second near-infrared (NIR-II) region is a big challenge because scarcity an effective molecular design strategy. In current paper, series based on diketopyrrolopyrrole-containing quinoidal compounds have been synthesized and characterized. These exhibited NIR-II maxima above 1000 nm optical band gaps as low 0.84 eV. Owing to their absorption, high photothermal conversion efficiencies up 53.1% upon 1064 laser...

High-mobility conjugated polymers (CPs) that can be synthesized in a large scale by direct arylation polycondensation (DArP) are highly desired for printable electronics. To realize this purpose, readily accessible C–H monomer with high reactivity and selectivity is crucial. Herein, we demonstrated chlorination enables the efficient DArP of thiophene derivatives, i.e., 3,3′,4,4′-tetrachloro-2,2′-bithiophene (4ClBT) (E)-1,2-bis(3,4-dichlorothien-2-yl)ethene (4ClTVT), which prepared no more...

Side chains of conjugated polymers (CPs) have played a vital role in the regulation solution processibility and semiconducting performance. Herein, carbosilane side chains, which manifest advantages low-cost facile synthesis as compared to common alkyl ones, were employed regulate aggregation behaviors charge transport properties isoindigo-based polymers. Three polymers, IIDSiC12, IIDSiC8, IIDC12, with varying bulkiness alkyls control synthesized via direct arylation polymerization....

Polymer semiconductors with large elastic recovery (ER) under high strain in thin film state are highly desirable for stretchable electronics. Here we report a type of semiconductor PU(DPP)x, by copolymerization oligodiketopyrrolopyrrole-based conjugated block and hydrogenated polybutadiene flexible via urethane linkage intermolecular hydrogen bonding. By regulating ratio, PU(DPP)35 35 wt % exhibits intrinsic ER > 80% 175% (ε) pseudo free-standing state, comparable commercial elastomers,...

To date, the preparation of high-performance stretchable and elastic semiconductors remains challenging yet urgently demanded by electronics field. Herein, we design a multiblock polyurethane elastomer matrix PBTTT-b-HTPB incorporating crystalline oligothiophene flexible polyolefin blocks to blend with conjugated polymers for high-mobility semiconductor nanofilms enhanced stretchability elasticity. The compatibility between polymer is found play key role in manipulating vertical lateral...

Naphthalenediimides (NDI) fused with two 2-(1,3-dithiol-2-ylidene)acetonitrile moieties (NDI-DTYA2), a novel strong electron-deficient monomer, was designed and readily synthesized by aromatic nucleophilic substitution to develop n-type polymers. Two NDI-DTYA2 based donor–acceptor (D–A) polymers P(NDI-DTYA2–1T) P(NDI-DTYA2–2T) have been prepared (1T = thiophene, 2T 2,2′-bithiophene) showed low-lying LUMO energies (<−4.2 eV) near-infrared optical absorptions (optical band gap <1.3 eV)....

This paper reports the rational design and synthesis of a novel electron-withdrawing building block, thiazole flanked naphthalene diimide (TzNDI), which offers coplanar conformation deep-lying highest-occupied molecular orbitals energy level in resulting conjugated polymers. A series polymers (PTzNDI-2FT, PTzNDI-T, PTzNDI-Se, PTzNDI-2T) consisting TzNDI different donor units were synthesized characterized. The all possess high weight excellent thermal property. Their intense light absorption...

Lithium-sulfur (Li-S) batteries hold great promise for widespread application on account of their high theoretical energy density (2600 Wh kg-1 ) and the advantages sulfur. Practical use, however, is impeded by shuttle effect polysulfides along with sluggish cathode kinetics. it reported that such deleterious issues can be overcome using a composite film (denoted as V-CMP@MWNT) consists conjugated microporous polymer (CMP) embedded vanadium single-atom catalysts (V SACs) network multi-walled...

Due to strong mode confinement, long propagation distance, and unique tunability, graphene plasmons have been widely explored in the mid-infrared terahertz windows. However, it remains a big challenge push shorter wavelengths integrate plasmon concepts with existing mature technologies near-infrared region. We investigate localized supported by nanodisks experimentally demonstrate working at 2 μm aid of fully scalable block copolymer self-assembly method. Our results show promising way...

A polymer based on thienoquinoid showed unipolar n-type characteristics with an electron mobility of up to 0.45 cm² V⁻¹ s⁻¹.

Among various molecular p-dopants, some Lewis acids have shown recognizable doping effect by the formation of acid–base adduct for increased hole concentration in organic semiconductors. However, product is often unstable air interference water. Here near amorphous conjugated polymer poly(indacenodithiophene-co-benzothiadiazole) (IDT-BT) was doped with four acid dopants varying acidities, zinc-, borane-, carbonium- and oxonium-based molecules, respectively. Bearing stronger acidity, oxonium...

Conjugated polymer films are promising in wearable X-ray detection. However, achieving optimal film microstructure possessing good electrical and detection performance under large deformation via scalable printing remains challenging. Herein, we report bar-coated high-performance stretchable based on a conjugated P(TDPP-Se) elastomer SEBS blend by optimizing the solution-processing conditions. The moderate preaggregation solution prolonged growth dynamics from solvent mixture with limited...

As a foundational clustering paradigm, Density Peak Clustering (DPC) partitions samples into clusters based on their density peaks, garnering widespread attention. However, traditional DPC methods usually focus high-density regions, neglecting representative peaks in relatively low-density areas, particularly datasets with varying densities and multiple peaks. Moreover, existing variants struggle to identify correctly high-dimensional spaces due the indistinct distance differences among...