Pyridinium N-Phenolate Betaine Dyes

VG Machado, RI Stock, C Reichardt - Chemical reviews, 2014 - ACS Publications
It is well-known that the solvent can strongly influence the course, rate, and equilibrium
position of many chemical reactions. 1, 2 The position and intensity of the bands in the …

Polarity of ionic liquids determined empirically by means of solvatochromic pyridinium N-phenolate betaine dyes

C Reichardt - Green Chemistry, 2005 - pubs.rsc.org
Solutions of the zwitterionic betaine dye 2, 6-diphenyl-4-(2, 4, 6-triphenylpyridinium-1-yl)
phenolate are solvatochromic, thermochromic, piezochromic, and halochromic. That is, the …

Pyridinium N-phenolate betaine dyes as empirical indicators of solvent polarity: Some new findings

C Reichardt - Pure and applied chemistry, 2004 - degruyter.com
Solutions of the zwitterionic betaine dye 4-(2, 4, 6-triphenylpyridinium-1-yl)-2, 6-di-
phenylphenolate are solvatochromic, thermochromic, piezochromic, and halochromic. That …

Pyridinium-N-phenolate betaine dyes as empirical indicators of solvent polarity: Some new findings

C Reichardt - Pure and Applied Chemistry, 2008 - degruyter.com
Solutions of the zwitterionic betaine dye 2, 6-diphenyl-4-(2, 4, 6-triphenylpyridinium-1-yl)
phenolate (hereinafter called standard betaine dye) and its derivatives are solvatochromic …

An easy and versatile experiment to demonstrate solvent polarity using solvatochromic dyes

VG Machado, C Machado - Journal of Chemical Education, 2001 - ACS Publications
In this easy and versatile experiment, undergraduate students of experimental physical
chemistry can discuss the concept of media polarity on the basis of the solvatochromic …

Two‐photon solvatochromism ii: experimental and theoretical study of solvent effects on the two‐photon absorption spectrum of Reichardt's dye

M Wielgus, R Zaleśny, NA Murugan… - …, 2013 - Wiley Online Library
In this study, we report on the influence of solvent on the two‐photon absorption (2PA)
spectra of Reichardt's dye (RD). The measurement of 2PA cross‐sections is performed for …

Theoretical computation of Betain B30 solvatochromism using a Polarizable Continuum Model

T Etienne, C Michaux, A Monari, X Assfeld… - Dyes and …, 2014 - Elsevier
We report in this paper the computation of optical properties of a solvatochromic probe using
Time-Dependent Density Functional Theory methodology. Our protocol includes the use of …

Have biofuel, will travel: A colorful experiment and a different approach to teach the undergraduate laboratory

OA El Seoud, C Loffredo, PD Galgano… - Journal of Chemical …, 2011 - ACS Publications
The substitution of petroleum-based fuels with those from renewable sources has gained
momentum worldwide. A UV–vis experiment for the quantitative analysis of biofuels …

Lösungsmittelpolarität‐Was ist das?

C Reichardt - Nachrichten aus Chemie, Technik und …, 1997 - Wiley Online Library
Chemische Reaktionen werden meist in Lösung ausgeführt, wobei die Auswahl des
richtigen Lösungsmittels oft von großer Bedeutung für deren Gelingen ist. Hierbei wird der …

Facile synthesis of ZnO particles via benzene-assisted co-solvothermal method with different alcohols and its application

P Maneechakr, S Karnjanakom, J Samerjit - RSC advances, 2016 - pubs.rsc.org
In this study, ZnO particles with different morphologies were synthesized by a novel co-
solvothermal method using benzene. The prepared samples were characterized by …