نتایج جستجو برای: solvatochromism

تعداد نتایج: 266  

Journal: :Dyes and Pigments 2021

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 ...

2017
Shangjun Chen Xin Li Liwen Song

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...

Journal: :Organic & biomolecular chemistry 2010
David W Dodd Kalen N Swanick Jacquelyn T Price Allison L Brazeau M J Ferguson Nathan D Jones Robert H E Hudson

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.

2014
María Alfonso Arturo Espinosa Alberto Tárraga Pedro Molina

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...

Journal: : 2023

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 ...

Journal: :Chemistry Africa 2021

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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