A copolymer comprising 1,4-diketopyrrolo[3,4-c]pyrrole (DPP) and thieno[3,2-b]thiophene moieties, PDBT-co-TT, shows high hole mobility of up to 0.94 cm2 V−1 s−1 in organic thin-film transistors. The strong intermolecular interactions originated from π-π stacking donor-acceptor interaction lead the formation interconnected polymer networks having an ordered lamellar structure, which have established highly efficient pathways for charge carrier transport.

A new , solution-processable, low-bandgap, diketopyrrolopyrrole-benzothiadiazole-based, donor-acceptor polymer semiconductor (PDPP-TBT) is reported. This exhibits ambipolar charge transport when used as a single component active in OTFTs with balanced hole and electron mobilities of 0.35 cm2 V−1s−1 0.40 V−1s−1, respectively. has the potential for transistor-based complementary circuits printed electronics.

A donor-acceptor polymer semiconductor, PDQT, comprising diketopyrrolopyrrole (DPP) and β-unsubstituted quaterthiophene (QT) for organic thin film transistors (OTFTs) is reported. This forms ordered layer-by-layer lamellar packing with an edge-on orientation in films even without thermal annealing. The strong intermolecular interactions arising from the fused aromatic DPP moiety DPP-QT interaction facilitate spontaneous self-assembly of chains into close proximity form a large π-π overlap,...

In this work, we report a novel donor–acceptor based solution processable low band gap polymer semiconductor, PDPP–TNT, synthesized via Suzuki coupling using condensed diketopyrrolopyrrole (DPP) as an acceptor moiety with fused naphthalene donor building block in the backbone. This exhibits p-channel charge transport characteristics when used active semiconductor organic thin-film transistor (OTFT) devices. The hole mobilities of 0.65 cm2 V−1s−1 and 0.98 are achieved respectively bottom gate...

Pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione or diketopyrrolopyrrole (DPP) is a useful electron-withdrawing fused aromatic moiety for the preparation of donor–acceptor polymers as active semiconductors organic electronics. This study uses DPP-furan-containing building block, 3,6-di(furan-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione (DBF), to couple with 2,2′-bithiophene unit, forming new copolymer, PDBFBT. Compared its structural analogue, 3,6-di(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione...

In this work, we report design, synthesis and characterization of solution processable low band gap polymer semiconductors, poly{3,6-difuran-2-yl-2,5-di(2-octyldodecyl)-pyrrolo[3,4-c]pyrrole-1,4-dione-alt-phenylene} (PDPP-FPF), poly{3,6-difuran-2-yl-2,5-di(2-octyldodecyl)-pyrrolo[3,4-c]pyrrole-1,4-dione-alt-naphthalene} (PDPP-FNF) poly{3,6-difuran-2-yl-2,5-di(2-octyldodecyl)-pyrrolo[3,4-c]pyrrole-1,4-dione-alt-anthracene} (PDPP-FAF) using the furan-containing...

The synthesis and characterization of solution processable donor–acceptor–donor (D–A–D) based conjugated molecules with varying ratios thiophene as donor (D) benzothiadiazole acceptor (A) are reported. Optical, electrochemical, thermal, morphological organic thin film transistor (OTFT) device properties these materials were investigated. thermal polarized optical microscope analysis indicates that the having higher D/A exhibit both liquid crystalline (LC) OTFT behavior. AFM 3 4 (3T1B 4T1B)...

Furan substituted diketopyrrolopyrrole (DBF) combined with benzothiadiazole based polymer semiconductor PDPP-FBF has been synthesized and evaluated as an ambipolar in organic thin-film transistors. Hole electron mobilities high 0.20 cm2 V−1 s−1 0.56 s−1, respectively, are achieved for PDPP-FBF.

The development of a synaptic transistor stimulated by visible light has drawn significant attention in recent years due to its high operating speed, low energy consumption, wide bandwidth, transmission rate, and relatively noise. These properties make them potential devices for understanding the behavior human brain artificial intelligence-related applications. In this work, we report low-voltage photosynaptic based on an organic semiconductor poly(2,5-bis(3-alkylthiophen-2-yl)...

We report here the synthesis, characterization, and organic thin-film transistor (OTFT) mobilities of 4,7-bis(5-(5-hexylthiophen-2-yl)thiophen-2-yl)benzo[1,2,5]thiadiazole (DH-BTZ-4T). DH-BTZ-4T was prepared in one high-yield step from commercially available materials using Suzuki chemistry purified by column chromatography. OTFTs with hole 0.17 cm2/(Vs) on/off current ratios 1 × 105 were active layers deposited vacuum deposition. As is soluble common solvents, solution processed devices...

New push–pull copolymers based on thiophene (donor) and benzothiadiazole (acceptor) units, poly[4,7-bis(3-dodecylthiophene-2-yl) benzothiadiazole-co-thiophene] (PT3B1) benzothiadiazole-co-benzothiadiazole] (PT2B2), are designed synthesized via Stille Suzuki coupling routes respectively. Gel permeation chromatography shows the number average molecular weights 31 100 8400 g mol−1 for two polymers, Both polymers have shown absorption throughout a wide range of UV-vis region, from 300 to 650 nm....

A novel solution processable donor–acceptor (D–A) based low band gap polymer semiconductor poly{3,6-difuran-2-yl-2,5-di(2-octyldodecyl)-pyrrolo[3,4-c]pyrrole-1,4-dione-alt-thienylenevinylene} (PDPPF-TVT), was designed and synthesized by a Pd-catalyzed Stille coupling route. An electron deficient furan diketopyrrolopyrrole (DPP) block rich thienylenevinylene (TVT) donor moiety were attached alternately in the backbone. The exhibited good solubility, film forming ability thermal stability....

A new diketopyrrolopyrrole (DPP)-containing donor–acceptor polymer, poly(2,5-bis(2-octyldodecyl)-3,6-di(furan-2-yl)-2,5-dihydro-pyrrolo[3,4-c]pyrrole-1,4-dione-co-thieno[3,2-b]thiophene) (PDBF-co-TT), is synthesized and studied as a semiconductor in organic thin film transistors (OTFTs) photovoltaics (OPVs). High hole mobility of up to 0.53 cm2 V−1 s−1 bottom-gate, top-contact OTFT devices achieved owing the ordered polymer chain packing favoured orientation, strong intermolecular...

Stochastic resonance (SR) is an intriguing phenomenon in which noise, typically considered a detrimental aspect of electronic communication systems, assumes beneficial role the detection undetectable signals. The SR for detecting low-intensity optical signals using PBTTT-C14-based organic field-effect transistors (OFETs) being reported. In this discourse, we explicate sensing periodic signal with frequency 5 Hz, OFETs presence finite and optimal quantity Gaussian noise (noise bandwidth 1 Hz...

We demonstrate white organic light-emitting diodes (OLEDs) having spectral width of approximately 260 nm in electroluminescence (EL) a simple bilayer structure, consisting TPD and zinc benzothiazole, without taking recourse to complex strategies such as blending doping. The EL is broader than the corresponding photoluminescence (PL) both component materials their structures. A deconvolution PL spectra shows that large 60% broad emission originates from multiple exciplexes formed at interface...

A benzothiadiazole end-capped small molecule 3,6-bis(5-(benzo[c][1,2,5]thiadiazol-4-yl)thiophen-2-yl)-2,5-bis(2-butyloctyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione (BO-DPP-BTZ) using a fused aromatic moiety DPP (at the centre) is designed and synthesized. BO-DPP-BTZ donor–acceptor–donor (D–A–D) structure which possesses band gap of 1.6 eV exhibits strong solid state ordering inferred from ∼120 nm red shift absorption maxima solution to thin film. Field-effect transistors utilizing spin coated...

The relationship between charge carrier lifetime and mobility in a bulk heterojunction based organic solar cell, utilizing diketopyrrolopyrole-naphthalene co-polymer PC71BM the photoactive blend layer, is investigated using photoinduced extraction by linearly increasing voltage technique. Light intensity, delay time, temperature dependent experiments are used to quantify density as well dependence of both. From saturation current at high laser intensities, it shown that Langevin-type...

Background Acute encephalitis syndrome (AES) is endemic to certain parts of India, with limited treatment options. In our initial exploratory comparative observational study 151 patients AES, there was significantly reduced mortality adjunctive homeopathy compared institutional management protocol (IMP). The present randomized placebo-controlled trial brings more statistical rigor this research program. Methods This conducted at a pediatric unit from 2013 2015. Children aged > 6 months...

Organic solar cells (OSCs) have attracted significant interest due to their utilization of a solution-based approach, which allows for easier fabrication procedures. In recent years, it has successfully reached more...

A novel series of soluble thieno[3,2-b]thiophene (TT) oligomers with alternating TT and bithiophene or fluorene triad architectures have been synthesized for field-effect transistor (FET) applications. Their optical, thermal electronic properties were investigated using UV-Vis photoluminescence spectroscopy, gravimetric analysis, cyclic voltammetry. Compared α,α′-dihexylsexithiophene (D6HT), these exhibit blue-shifted absorption spectra, 0.1 eV to 0.3 lower than the highest occupied...

Inducement of high charge carrier density in organic field-effect transistors (OFETs) is a subject immense interest due to its fundamental and applied impact on device operation. Here, the performance imidazolium-based ionic liquid (IL)-gated OFETs reported. By exploiting p-doping poly(3-hexylthiophene-2,5diyl) (P3HT) ambient environment using IL-gating, (1016 cm–2) has been induced P3HT, which resulted hole mobility (20.2 cm2 V–1 s–1). This remarkable improvement polymer semiconductors....

A sustainable method for PBz:iron NPs composite based on cardanol, an agro-waste, exhibiting a versatile crosslinked network with superparamagnetic properties.