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Supercapacitors can deliver energy quickly, offering extraordinary potential for efficient electrochemical energy storage (EES) systems. Specifically, carbon-based supercapacitors have reliable operational stability and outstanding cycle lifespans. However, designing low-cost and high-energy-density carbon electrode materials using a simple method remains an enormous challenge. Here, we design a porous carbon material JKPC-4-700 derived from a second alcoholic fermentation rice by tuning the pore sizes using a simple approach. The main pore sizes of JKPC-4-700 are 0.57 and 1.22 nm, in good agreement with the 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIMBF4) ionic liquid. The specific surface area of JKPC-4-700 reaches 2662 m2g−1, which enables JKPC-4-700 a specific capacity of 465 F g−1(at 1.0 A g−1in 6 M KOH). The symmetric capacitors based on JKPC-4-700 deliver an excellent energy density of 117 Wh kg−1(at a power-density of 900 W kg−1). Our research offers a new strategy for developing high-energy-density, low-cost, and functional carbon materials for efficient EES systems.

In this study, amphiphilic diblock copolymers were designed and synthesized via the incorporation of reversible additionfragmentation chain transfer radical polymerization (RAFT) and a subsequent grafting technique. Subsequently, Hg2+-sensitive water-soluble fluorescent polymeric micelles (FNs) were prepared by a reprecipitation strategy. The spectroscopic characteristics demonstrate that the fluorescein isothiocyanate (FITC) was successfully linked into the polymer. Due to the promoted reaction of desulfurization cyclization by Hg2+, the fluorescence of fluorescein in FNs was obviously quenched. The as-prepared FNs showed admirable Hg2+-sensitivity (detection limit: 54 nM), excellent water-solubility and high selectivity. In addition, FNs were successfully used to determine Hg2+ in blood serum. We expected that the as-prepared FNs could perform potential applications in imaging, sensing, and bioanalytic chemistry.

The structural units of 35 polymethacrylates have been optimized and their quantum chemical descriptors have been calculated via density functional theory method at 6-31G (d) basis set level. The quantitative structure–property relationships of the quantum chemical descriptors and properties, such as molar volumes at room temperature V298K, refractive index n, and glass transition temperature Tg, have been obtained by stepwise regression and Artificial Neural Network (ANN) method. The values of the correlation coefficient R for the calculated and the experimental data are 0.9968 and 0.9949 for V298K, 0.9918 and 0.9980 for n, 0.9609 and 0.9708 for Tg, respectively. The results calculated by ANN method meet the experimental data better than those by the stepwise method.

The 1,3‐dipolar cycloaddition reaction of thiazolo[3,2‐a]pyrimidine derivatives (I) with in situ from N‐phenyl benzhydrazidoyl chloride (II) generated nitrilamine is investigated.

The 1,3‐dipolar cycloaddition of thiazolo[3,2‐a]triazine derivative (I) to azomethine ylide, generated in situ from sarcosine and acenaphthenequinone, affords novel spiro compounds (IV).

A range of novel aryl‐substituted trispiroheterocycles (VI) is prepared with high regio‐ and stereoselectivity via a tandem cycloaddition reaction of 2,5‐bis(arylmethylidene)cyclopentanones (III).

Azomethine ylides, derived from isatin and sarcosine or proline, react with substrates of type (I)/(V) to give the novel dispiroheterocycles regio‐ and stereoselectively.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.