Two‐dimensional (2D) transition metal dichalcogenide has attracted significant attention recently due to its unique electrical and optical properties. However, MoS2 nanosheets fabricated by traditional methods exhibit poor electrical performance due to the existence of the 1T metal phase. A solution‐processable pure 2H semiconductor phase MoS2 nanosheet for use as the functional layer of high‐performance memristors is presented. The resulting memristor based on a Ag/MoS2/Pt structure exhibits excellent resistive switching properties including high endurance and multilevel retention. Moreover, the power consumption and programming current of the SET operation can be as low as 7.35 nW and 100 nA, respectively. Interestingly, it is demonstrated that the resistance of the Ag/MoS2/Pt device can be bidirectionally modulated over a wide range (pulse number >500) with an approximately linear trend. Furthermore, the accuracy of pattern recognition with handwritten data can reach 90.37%. This work provides a simple and practical method for the realization of fabrication of pure 2H‐MoS2 and application in biological neural computing systems.

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A molecularly imprinted polymer based on a ternary deep eutectic solvent comprised of choline chloride/caffeic acid/ethylene glycol was prepared. The caffeic acid in the ternary deep eutectic solvent was used as both a monomer and template. The molecularly imprinted polymer based on the ternary deep eutectic solvent was characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, field-emission scanning electron microscopy, Brunauer-Emmett-Teller surface area analysis, atomic force microscopy, and elemental analysis. A series of molecularly imprinted polymers based on choline chloride/caffeic acid/ethylene glycol with different molar ratios was prepared and applied to the molecular recognition of polyphenols. A comparison of the recognition ability of molecularly imprinted polymers to polyphenols revealed that the choline chloride/caffeic acid/ethylene glycol (1:0.4:1, molar ratio) molecularly imprinted polymer had the best molecular recognition effect with 132 μg/g of protocatechuic acid, 104 μg/g of catechins, 80 μg/g of epicatechin, and 123 μg/g of caffeic acid in 6 h, as well as good molecular recognition ability for polyphenols from a Radix Asteris sample. These results show that the ternary deep eutectic solvent based molecularly imprinted polymer is a potential medium that can be applied to drug purification, drug delivery, and drug analysis.

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