We have demonstrated a novel sensing strategy employing single-stranded probe DNA, unmodified gold nanoparticles, and positively charged, water-soluble conjugated polyelectrolyte to detect broad range of targets including nucleic acid (DNA) sequences, proteins, small molecules, inorganic ions. This nearly “universal” biosensor approach is based on the observation that, while specifically inhibits ability DNA prevent aggregation gold-nanoparticles, no such inhibition observed with...

A novel series of semiconducting conjugated copolymers, derived from alkyl-substituted fluorene, 4,7-diselenophen-2'-yl-2,1,3-benzothiadiazole (SeBT), and 4,7-diselenophen-2'-yl-2,1,3-benzoselenadiazole (SeBSe), was synthesized by a palladium-catalyzed Suzuki coupling reaction with various feed ratios. The optical band gap copolymers is very low, 1.87 eV for SeBT 1.77 SeBSe. efficient fast energy transfer fluorene segments to narrow-band-gap sites observed. emission photoluminescence...

Research on fused-ring small-molecular-acceptors (SMAs) has deeply advanced the development of organic solar cells (OSCs). Compared to fruitful studies ladder-type cores and end-caps SMAs, exploration side chains is monotonous. The widely utilized alkyl aryl usually produce a conflicting association between SMAs' crystallinity miscibility. Herein, fresh idea about modification reported explore subtle balance Specifically, phenyl introduced tail chain whereby new acceptor IDIC-C4Ph reported....

The 2D asymmetric side chain strategy via modification with different halogens can optimize the morphology, improve molecular interaction and control photophysical properties, promoting an outstanding PCE of 17.0% in binary ASM-OSCs.

The development of high-efficiency organic solar cells (OSCs) processed from non-halogenated solvents is crucially important for their scale-up industry production. However, owing to the difficulty regulating molecular aggregation, there a huge efficiency gap between and halogenated solvent OSCs. Herein, we fabricate o-xylene OSCs with approaching 20 % by incorporating trimeric guest acceptor named Tri-V into PM6:L8-BO-X host blend. incorporation effectively restricts excessive aggregation...

Abstract Hybrid cycloalkyl‐alkyl side chains are considered a unique composite side‐chain system for the construction of novel organic semiconductor materials. However, there is lack fundamental understanding variations in single‐crystal structures as well optoelectronic and energetic properties generated by introduction hybrid electron acceptors. Herein, symmetric/asymmetric acceptors (Y‐C10ch A‐C10ch) bearing bilateral unilateral 10‐cyclohexyldecyl designed, synthesized, compared with...

The addition of cyclane 1,5-diiodocycloctane (DICO) provides critical roles in extending exciton diffusion length within active layer, consequently contributing to the improvement power conversion. efficiency thick film organic solar cells.

Abstract All small molecule organic solar cells (ASM‐OSCs) have numerous advantages but lower power conversion efficiencies (PCEs) than their polymer equivalents, which is largely due to the suboptimal nanoscale network structure in a bulk heterojunction (BHJ). Herein, new donors with symmetric/asymmetric hybrid cyclopentyl‐hexyl side chains are designed, accounting for manipulated intermolecular interactions and BHJ morphology. Theoretical experimental results reveal that asymmetric...

Novel soluble conjugated random copolymers are synthesized by palladium-catalyzed Suzuki coupling reaction from 9,9-dioctylfluorene (DOF) and 4,7-di(4-hexylthien-2-yl)-2,1,3-benzothiadiazole (DHTBT) with DHTBT composition varying 1 to 50 mol % in the copolymer. All of polymers common organic solvents highly photoluminescent. Polyfluorene fluorescence is quenched completely at a concentration as low 1% solid film. The copolymer films fluorescent under UV irradiation contrast its parent...

It has been previously shown that incorporating alcohol/water-soluble conjugated polyelectrolytes (CPEs) as cathode interlayers can substantially enhance the open-circuit voltage (Voc) of bulk heterojunction polymer solar cells (PSCs). This improvement is attractive since there are only a few solution-based processing technologies Voc. In this article, Voc enhancement effect five distinct CPE materials was studied on three typical PSC device configurations, each using different donor...

Counterion exchange in cationic conjugated polyelectrolytes provides for a straightforward method to modulate the performance of these materials as electron transport (injection) layer (ETL) organic light emitting diodes. The bromide counterions [(9,9-bis(6'-N,N,N-trimethylammonium)-hexyl)fluorene]bromide (PF-Br) can be easily replaced with trifluoromethylsulfonate (PF-CF3SO3), tetrakis(imidazolyl)borate (PF-BIm4) or tetrakis(3,5-trifluoromethylphenyl)borate (PF-BArF4) by procedure that...

Many electrochemical biosensor approaches developed in recent years utilize redox-labeled (most commonly methylene blue or ferrocene) oligonucleotide probes site-specifically attached to an interrogating electrode. Sensors this class have been reported that employ a range of probe architectures, including single- and double-stranded DNA, more complex DNA structures, RNA aptamers, and, most recently, DNA-small molecule chimeras. Signaling sensors is generally predicated on binding-induced...

The time responses of polymer light-emitting diodes (PLEDs) incorporating conjugated polyelectrolyte electron transport layers (ETLs) are reported. Longer times required with thicker ETL and smaller applied voltages. These observations consistent a reduction the injection barrier that depends on ion motion in ETL. devices hybrid between PLEDs electrochemical cells.

The chemical structures and electronic at conjugated polyelectrolyte/Au interfaces demonstrate that polyelectrolytes with identical backbones but different pendant charges charge-compensating ions exhibit properties. This finding shows counterions backbone enable control of the nature critical device interfaces.

Conjugated microporous polymers are explored as high-performance electrode materials for lithium and sodium storage, exhibiting excellent electrochemical performance.

Two pairs of indacenodithiophene (IDT) and quinoxaline-based copolymers with meta- or para-hexyl-phenyl side chains on the IDT unit are synthesized. The meta-substituted polymers offer better solubility, higher molecular weight for both fluorinated non-fluorinated copolymers, a superior photovoltaic performance power conversion efficiency 7.8%. side-chain design strategy presented is an efficient way to produce high conjugated organic electronics.

A new alternating donor–acceptor (D–A1–D–A2) copolymer containing two electron-deficient moieties, isoindigo and quinoxaline, was synthesized. The photovoltaic performance of this polymer could be improved by incorporating fluorine atoms into the quinoxaline units, resulting in an efficiency 6.32%. This result highlights attractive promise D–A1–D–A2 copolymers for high-performance bulk heterojunction solar cells.

PCTF-4 with benzothiadiazole exhibited the highest CO₂ uptake (20.5 wt%) and CO₂/N₂ selectivity (56) among reported covalent triazine-based frameworks.

The new strategy, employing thiazole as a π bridge into the backbone of quinoid polymers, enhanced <italic>V</italic>_OC and photovoltaic performance.

Two 1D–2D asymmetric benzodithiophenes (BDTs) as donor building blocks are designed and synthesized, combining the advantages of both 1D 2D symmetric BDTs. The photovoltaic properties BDT-based polymers improved greatly in comparison with corresponding polymers. This work provides a new approach to design prospective organic optoelectronic materials employing symmetry-breaking strategy. As service our authors readers, this journal supporting information supplied by authors. Such peer...

To obtain a polymer based on benzodithiophene (BDT) owning both largely extended π-conjugation system and low-lying highest occupied molecular orbital (HOMO), (PBDTBzT-DTffBT) containing benzothienyl-substituted BDT is designed synthesized. Compared with the (PBDTT-DTffBT) thienyl-substituted BDT, PBDTBzT-DTffBT exhibits better thermal stabilities, red-shifted absorption spectra, stronger intermolecular interactions. The HOMO lowest unoccupied (LUMO) in are decreased by 0.11 0.13 eV,...

Abstract Ternary organic solar cells (TOSCs) offer a facile and efficient approach to increase the power conversion efficiencies (PCEs). However, critical roles that guest components play in complicated ternary systems remain poorly understood. Herein, two acceptors named LA1 LA9 with differing crystallinity are investigated. The overly crystalline induces large self‐aggregates PM6:LA9 binary system, resulting lower PCE (13.12%) compared PM6:LA1 device (13.89%). Encouragingly, both verified...