Stable n-Type Conducting Elastomer with High Stretchability and Electrical Conductivity.

Stretchable n-type conducting polymers are crucial for advancing high-performance optoelectronic and bioelectronic devices, yet their development lags significantly behind that of p-type counterparts due to the intrinsic challenge of harmonizing electrical conductivity with mechanical compliance. Herein, a novel strategy is reported to engineer a high-performance n-type conductive elastomer by synergistically blending the n-type polymer poly(benzodifurandione) (PBFDO) with thermoplastic polyurethane (TPU) and modulating phase separation via the ionic liquid (IL) 1-butyl-3-methylimidazolium tetrafluoroborate. The resulting PBFDO/TPU/IL composites (PBTI) achieve an unprecedented combination of n-type electrical conductivity exceeding 200 S cm¹, fracture elongation surpassing 200%, and robust operational stability, outperforming existing stretchable n-type conductive polymers.

Regiochemistry and Side-Chain Engineering Enable Efficient N-Type Mixed Conducting Polymers.

Developing high-performance n-type organic mixed ionic-electronic conducting (OMIEC) polymers with simple structural motifs is still challenging. We show that high-performance, low-threshold-voltage n-type OMIEC polymers can be achieved using a simple diketopyrrolopyrrole unit flanked by thiazole groups, which is functionalized with glycolated side chains. Interestingly, the regiospecific sp-N position in the repeating unit's thiazole governs the polymer chains' solvation and molecular packing.

Matching P- and N-type Organic Electrochemical Transistor Performance Enables a Record High-gain Complementary Inverter.

The charge transport of channel materials in n-type organic electrochemical transistors (OECTs) is greatly limited by the adverse effects of electrochemical doping, posing a long-standing puzzle for the community. Herein, an n-type conjugated polymer with glycolated side chains (n-PT3) is introduced. This polymer can adapt to electrochemical doping and create more organized nanostructures, mitigating the adverse effects of electrochemical doping.

Molybdenum disulfide quantum dots for rapid fluorescence detection of glutathione and ascorbic acid.

A method for the specific detection of glutathione (GSH) and ascorbic acid (AA) using 3-aminophenylboronic acid functionalized molybdenum disulfide quantum dots (APBA-MoS QDs) was reported. The APBA-MoS QDs synthesized using the hydrothermal method showed the strongest fluorescence intensity at an emission wavelength of 375 nm with the optimum excitation wavelength of 320 nm. The detection method was constructed by the combination of the dynamic and static quenching and the inner filter effect (IFE) of APBA-MoS QDs by permanganate (MnO) and the rapid redox reaction (1 min) of MnO by GSH or AA.

Tailoring the Density of State of n-Type Conjugated Polymers through Solvent Engineering for Organic Electrochemical Transistors.

Conjugated polymers with ethylene glycol-type side chains are commonly used as channel materials in organic electrochemical transistors (OECTs). To improve the performance of these materials, new chemical structures are often created through synthetic routines. Herein, we demonstrate that the OECT performance of these polymers can also be improved by changing their density-of-state (DOS) profile through solvent engineering.