A cost-effective, and low-energy room-temperature cascade catalytic carbonization strategy is demonstrated for converting lignin into graphite with a high yield of 87 %, a high surface potential of -37 eV and super-hydrophilicity. This super-hydrophilic feature endows the lignin-derived graphite to be dispersed in a variety of polar solvents, which is important for its future applications. Encapsulating of liquid metals with the graphite for electrical circuit patterning on flexible substrates is also advocated. These written patterns show superb conductivity of 4.9 × 10 S/m, offering good performance stability and reliability while being repeatedly stretched, folded, twisted, and bent. This will offer new designs for flexible electronic devices, sensors, and biomedical devices.
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http://dx.doi.org/10.1016/j.biortech.2024.130802 | DOI Listing |
Mikrochim Acta
January 2025
Key Laboratory of Organic Integrated Circuit, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China.
A Cr-doped VO nanobelt (Cr/VO) with remarkable peroxidase-like activity was synthesized and coupled with uricase to catalyze the cascade reaction for detection of uric acid. Notably, the affinity of Cr/VO for 3,3',5,5'-tetramethylbenzidine dihydrochloride hydrate (TMB) and hydrogen peroxide (HO) is tenfold and 20-fold higher, respectively, than that of horseradish peroxidase (HRP). The Cr/VO exhibits highly reactive and stable peroxidase activity at temperatures of 20-60 ℃.
View Article and Find Full Text PDFJ Org Chem
January 2025
Key Laboratory of Novel Targets and Drug Study for Neural Repair of Zhejiang Province, School of Medicine, Hangzhou City University, Hangzhou, Zhejiang 310015, China.
Reported herein is a concise synthesis of sulfoximidoyl amidines enabled by a Pd-catalyzed cascade aza-Claisen rearrangement and nucleophilic reaction at room temperature. Free -sulfoximines and -allylynamides were employed as the modular building blocks to produce the expected sulfoximine amidine derivatives in highly chemoselective models and in 100% atom efficiency. A broad range of functional groups were well tolerated under these gentle reaction conditions to give the desired products in generally good to excellent yields.
View Article and Find Full Text PDFAnal Chem
December 2024
Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education Chongqing, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
Herein, a novel zinc-organic gel with self-catalysis-enhanced electrochemiluminescence (ECL) performance was prepared as an emitter for the first time to assemble a biosensor for ultrasensitive detection of microRNA-221 (miR-221) related to liver cancer. Interestingly, Zn served as a central ion to coordinate with multidentate ligands 2,4,6-tris(4-carboxyphenyl)-1,3,5-triazine (TATB) at room temperature to form Zn-TATB-MOGs with excellent ECL intensity. More importantly, compared to metal ions (e.
View Article and Find Full Text PDFOrg Lett
December 2024
College of Chemistry, Zhengzhou University, Zhengzhou, Henan 450001 China.
1-(2-(Arylethynyl)benzoyl)indoles were developed as an innovative scaffold for radical cascade cyclization under visible-light and mild conditions, enabling efficient synthesis of sulfonated benazepino[1,2-]indolones. This method operates at room temperature and demonstrates broad substrate compatibility and scalability, with promising potential for sunlight-driven reactions.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China. Electronic address:
Enzymatic glycosylation is an efficient and biocompatible approach to enhance natural product bioavailability. Cellobiose phosphorylase, a novel glycosyltransferase, utilizes 1-phospho-glucose (1-p-Glc) as a glycosyl donor for regioselective glycosylation of various natural substrates. However, the high cost of 1-p-Glc limits the economic feasibility of the process.
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