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Silver nanowire/gold nanosphere binary plasma-assembled membranes for sensitive SERS detection of homocysteine.
Mikrochim Acta
December 2024
School of Materials and Chemical Engineering, Fuzhou Institute of Oceanography, Minjiang University, Fuzhou, Fujian, 350108, China.
Silver nanowire (Ag NW)/gold nanosphere (Au NS) binary plasma films were prepared using plasma coupling between Ag NWs and Au NSs. The plasma films formed by combining these two noble metals showed better sensitivity for SERS detection with a minimum detection concentration of 10 M for R6G compared to pure Ag NWs or Au NSs. After rational optimisation of the substrate preparation process, the substrate showed good homogeneity, reproducibility and stability.
View Article and Find Full Text PDFConstruction of poly (styrene-divinylbenzene)@tris(4-aminophenyl)amine-p-phthalaldehyde-triethylenetetramine core-shell microspheres for the preparation of ion chromatography stationary phase.
J Chromatogr A
January 2025
Department of Applied Chemistry, Zhengzhou University of Light Industry, Zhengzhou 450000, China.
Core-shell composite microspheres are increasingly favored for the development of stationary phases due to their ability to integrate the monodispersity of inner core with the functional versatility of outer shell. In this study, poly(styrene-divinylbenzene)@(tris(4-aminophenyl)amine-p-phthalaldehyde-triethylenetetramine) (PS-DVB@TAPA-PPA-TETA) core-shell composite microspheres were constructed via an amine-aldehyde condensation reaction. The resultant microspheres were subsequently quaternized using the residual amine groups of TETA in the shell to create an effective anion-exchange stationary phase.
View Article and Find Full Text PDFPreparation of 1,2-benzenedialdehyde-crosslinked oligo-gelatin conjugates and poly-gelatin nanoparticles to stabilize traditional and Pickering emulsions, respectively.
Food Chem
January 2025
Medical Food Laboratory, Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai Institute for Pediatric Research, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China; National R&D Branch Center for Freshwater Aquatic Products Processing Technology (Shanghai), Integrated Scientific Research Base on Comprehensive Utilization Technology for By-Products of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Shanghai Engineering Research Center of Aquatic-Product Processing and Preservation, College of Food Science & Technology, Shanghai Ocean University, Shanghai 201306, China; Department of Clinical Nutrition, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai 200135, China; Marine Biomedical Science and Technology Innovation Platform of Lingang Special Area, Shanghai 201306, China. Electronic address:
This research aimed to develop a desolvation and 1,2-benzenedialdehyde crosslinking method to prepare crosslinked gelatin substances for emulsion stabilization. The oligo-gelatin conjugates and poly-gelatin nanoparticles could be formed at the 1,2-benzenedialdehyde concentration of 50 g/L and ≥ 150 g/L, respectively. The formation mechanism involved intra/inter-molecular amine-benzenedialdehyde-thiol and amine-benzenedialdehyde-amine crosslinking reactions.
View Article and Find Full Text PDFTriptycene derivatives are used extensively in supramolecular and materials chemistry, however, most are prepared using a multi-step synthesis involving the generation of a benzyne intermediate, which hinders production on a large scale. Inspired by the ease of the synthesis of resorcinarenes, we report the rapid and efficient preparation of triptycene-like 1,6,2',7'-tetrahydroxynaphthopleiadene directly from 2,7-dihydroxynaphthalene and phthalaldehyde. Structural characterisation confirms the novel bridged bicyclic framework, within which the planes of the single benzene ring and two naphthalene units are fixed at an angle of ∼120° relative to each other.
View Article and Find Full Text PDFOne-pot derivatization spectrofluorimetric method for detection of aspartame in sweetener commercial tablets and soft drinks: Greenness assessments of the methodology.
Luminescence
September 2024
Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, Egypt.
Aspartame is an artificial sweetener used in drinks and many foods. International Agency for Research on Cancer classified aspartame as possibly carcinogenic to humans (IARC Group 2B). In this study, a sensitive and selective spectrofluorimetric method was developed to detect aspartame.
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