期刊
RESEARCH ON CHEMICAL INTERMEDIATES
卷 48, 期 12, 页码 4963-4985出版社
SPRINGER
DOI: 10.1007/s11164-022-04841-3
关键词
Bis-coumarinyl methane; Amberlyst 15; Thin film; Nano-material; Memory device; WORM memory
资金
- Department of Science and Technology (DST), Govt. of India [SR/FST/CSI-263/2015]
Investigated the efficient one pot synthesis of various bis-coumarinyl methane derivatives under refluxing conditions in ethanol-water, providing high yield and advantages; the synthesized compounds were used to develop nanostructured materials and subjected to various tests.
An efficient one pot synthesis of various bis-coumarinyl methane derivatives was investigated by condensing a series of aldehydes with 4-hydroxy coumarin in the presence of Amberlyst 15 catalyst under refluxing conditions in ethanol-water (1:1). This one pot domino Knoevenagel condensation/Micheal addition reaction provides excellent yield of bis-coumarinyl methane derivatives with lots of advantages like shorter reaction time, eco-friendly reaction medium, simple work up, recyclability of the catalyst and chromatography-free purification. Moreover, the synthesized compound was exploited to develop bis-coumarinyl methylene-based nanostructured materials of special interests which were investigated by UV-Vis, fluorescence spectroscopy, imaging in scanning electron microscope and atomic force microscope. Our UV-Vis and fluorescence study indicated that some of the organic compounds are organized as H-aggregate in the thin film. We also investigated I-V characteristics of the thin film of some of the selective compounds which showed write-once-read-more memory switching behaviour onto the thin film under investigations.
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