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A three-component network for OFF/ON catalysis was built from a protonated nanoswitch and a luminophore. Its activation by addition of silver(i) triggered the proton-catalyzed formation of a biped and the assembly of a fast slider-on-deck ( = 540 kHz).
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http://dx.doi.org/10.1039/d3ra00062a | DOI Listing |
Anal Chim Acta
October 2025
College of Chemistry and Materials Sciences, College of Geography and Environmental Sciences, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China. Electronic address:
The demand for high-performance electrochemiluminescence (ECL) emitters in aqueous media continues to grow due to requirements for ultrasensitive biomedical detection. In this work, we report the synthesis of Zn (II) meso-tetra(4-carboxyphenyl) porphine (ZnTCPP) integrated with 4,4',4″-tricarboxytriphenylamine (TBA) for forming porphyrin-based hydrogen bond organic frameworks (ZnP-HOFs). The ZnP-HOFs showed strong ECL emission using KSO as coreactant, achieving a 5.
View Article and Find Full Text PDFJ Agric Food Chem
July 2025
Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education; Tianjin Key Laboratory of Industrial Microbiology; College of Biotechnology, National Engineering Laboratory for Industrial Enzymes, Tianjin University of Science and Technology, Tianjin 300457, P. R. China.
d-Allulose, biosynthesized through D-fructose isomerization, was limited by thermodynamic equilibrium, resulting in low yields. Herein, we redesigned a redox-driven cascade pathway for d-allulose biosynthesis in single-cell systems, utilizing post-translational protein-level reprogramming tools (protease-based programmable OFF/ON-switch toolbox) to resolve enzyme incompatibility. This OFF/ON-switch was systematically optimized by adjusting the expression levels of -Lon, degron, and repressors, enabling the simultaneous switching of protein abundance to desired states within 2 h based on a thermosensitive regulator.
View Article and Find Full Text PDFSci Rep
July 2025
Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China.
We present a novel, one-step hydrothermal synthesis of carbon dots (CDs) with intense blue fluorescence and a remarkably high quantum yield of 50%, using ethylene glycol tetraacetic acid (EGTA) as a single precursor eliminating the need for additional passivation agents. This streamlined strategy represents a significant advancement in the efficient production of functional CDs. The resulting CDs exhibit dual-mode fluorescence sensing, selectively detecting Fe through a fluorescence quenching mechanism, with an ultra-low detection limit of 23 nM.
View Article and Find Full Text PDFRSC Adv
April 2025
NANOCAST Laboratory, Center for Catalysis Science and Technology (CAST), Department of Chemistry, Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University 272 Rama VI Rd., Ratchathewi Bangkok 10400 Thailand
Plastic waste was transformed into high-performance quantum dots (QDs), combining technological innovation with a focus on environmental sustainability. The excellent fluorescence properties of the synthesized quantum dots were utilized to detect Fe and F ions with high sensitivity and selectivity in an "on-off-on" dual-mode fashion. Additionally, the synthesized quantum dots exhibited stable solid-state fluorescence, enabling their use in solid-phase applications without the typical fluorescence loss observed in other materials.
View Article and Find Full Text PDFAnal Chim Acta
June 2025
Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, Department of Pharmaceutical Analysis, Fujian Medical University, Fuzhou, 350122, China. Electronic address:
Monitoring D-amino acids concentrations has essential implications for gastric cancer diagnosis and treatment, especially in the non-invasive detection of gastric cancer. However, it remains a challenge to establish a high-performance detection method for D-amino acids. Here, a highly sensitive and selective d-alanine (D-Ala) ECL assay strategy via a turn-off-on split-type electrochemiluminescence (ECL) platform has been proposed.
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