نتایج جستجو برای: solvatochromism
تعداد نتایج: 266 فیلتر نتایج به سال:
A series of twelve dyes based on the 4,4-bis(4-methoxyphenyl)butadienyl donor and differing by electron acceptors have been designed synthesized. The different were characterized UV–visible absorption spectroscopy as well cyclic voltammetry. By fine tuning electron-accepting ability fourteen selected acceptors, absorbing between 400 650 nm could be obtained with this ?-extended donor. To get a ...
Key Laboratory of Resource Chemistry o Laboratory of Rare Earth Functional Mater Normal University, Shanghai, 200234, P. R. Division of Theoretical Chemistry and Biol Institute of Technology, SE-10691 Stockholm Shanghai Key Laboratory of Functional Mat Science and Technology, Shanghai 200237, † Electronic supplementary information NMR and high resolution mass spectra of Cite this: RSC Adv., 201...
We report the synthesis and photospectroscopic characterisation of intrinsically fluorescent triazole-appended cytidines. Fluorescence was found to be highly dependent on solvent conditions. X-Ray crystallographic data show the proton of the exocyclic amine of the nucleobase and the triazole N(3) engaged in a H-bond.
Aryl or heteroaryl 5-substituted imidazo-benzothiadiazole derivatives were synthesized and shown to display remarkable solvatofluorochromism and selectively sense mercury(II) cations, acetate anions, and nitroaromatic derivatives, with discrimination between p-nitrophenol and picric acid. These novel sensors are of importance these days, as the detection of explosives is a high priority in issu...
Recently, a large number of studies have been dedicated to chemistry and physical studies polymethine dyes, especially the functionalized symmetrical heptamethinecyanines based on indole derivatives. Due their unique versatile spectral properties, which lie in near infrared region (NIR), meso-substituted indotricarbocyanine dyes are widely used various biological fields. In present work, we ...
A ruthenium bipyridyl-dye sensitizer (N) based on the naphthyl-thiazole anchoring-ancillary ligand was synthesized and characterized using spectroscopic methods of UV–Vis, 1H NMR, FTIR fluorescence. The functional properties N were investigated through its photoinduced intramolecular charge transfer mechanisms. Subsequently, displayed interesting transfer-based (ESIPT) that are complementary to...
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