Solvatochromic Dye
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. UNRAVELING THE SOLVATOCHROMISM OF A TRIARYLMETHANE DYE BY RESONANCE RAMAN SPECTROSCOPY
The effect of the solvent on the electronic properties of the triarylmethane dye rosolic acid (RA) is investigated by means of UV-VIS and resonance Raman (RR) spectroscopies. The comparison of the solvatochromic behavior of both neutral and dianionic species of RA in acetonitrile, dimethylsulfoxide, and methanol illustrates the effect of polarity and hydroge
Quím. Nova. Publicado em: 05/12/2019
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2. Estudo de um sensor cromogênico aniônico fundamentado na competição entre uma merocianina e um ânion pelo calix[4]pirrol
This work has studied the assembly of a chromogenic sensor that uses as receptor calyx[4]pyrrole (CP), which is capable to recognize fluoride with high efficience, and two solvatochromic dyes, Brookers merocyanine (MB) and Reichardts dye (CR), as signalizing unity. The solutions of MB in acetonitrile, a low polarity medium, exhibit violet color. It was obser
Publicado em: 2007
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3. Estudos do comportamento de corantes solvatocrômicos em soluções de ciclodextrinas
Neste trabalho investiga-se o comportamento de corantes solvatocrômicos em soluções contendo ciclodextrinas a fim de verificar a possível formação de complexos de inclusão. O comportamento espectroscópico das bandas solvatocrômicas da merocianina de Brooker e do corante de Reichardt em diversos solventes próticos (água, metanol, etanol, propan-2-o
Publicado em: 2005
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4. Síntese de diazatriciclos e propriedade solvatocrômica de 1,10-fenantrolinas
This work describes a new methodology for a variety of diazatricycles from the termocyclisation of phenylenediamine-bis(methylene Meldrumss acid) derivatives. The key intermediates 4,5-dimethyl-1,2-bis[(2,2-dimethyl-4,6-dioxo- 1,3-dioxan-5-ylidenemethyl)amino]benzene (58), 5-chloro-1,3-bis[(2,2-dimethyl-4, 6-dioxo-1,3-dioxan-5-ylidenemethyl)amino]benzene (62
Publicado em: 2003