53968-62-0Relevant articles and documents
Fast and ratiometric naked eye detection of hydrazine for both solid and vapour phase sensing
Goswami, Shyamaprosad,Paul, Sima,Manna, Abhishek
, p. 2300 - 2305 (2015)
A new naked-eye ratiometric colorimetric and fluorometric chemodosimeter (PBF) was constructed to enable trace vapor detection of hydrazine. This probe utilizes an irreversible and fast hydrazine-promoted cleavage of the ester linkage in PBF. This probe was shown to be highly selective for hydrazine, and showed real time response as well as a positive linear relationship to hydrazine concentration. The probe also shows an excellent performance in the dip stick method.
A highly sensitive and selective turn-on fluorescent probe for sulfite and its application in biological imaging
Song, Jianhua,Zhang, Di,Liu, Yaqi,Zhao, Yufen,Ye, Yong
supporting information, p. 6284 - 6288 (2015/08/06)
A turn-on fluorescein-based probe (1) has been successfully developed for the highly sensitive and selective detection of sulfite. The probe exhibits high SO32- selectivity over other common anions and biothiols (Cys, Hcy and GSH), a
Effect of solvent-water mixtures on the prototropic equilibria of fluorescein and on the spectral properties of the monoanion
Klonis, Nectarios,Sawyer, William H.
, p. 179 - 185 (2007/10/03)
A spectral resolution procedure was used to resolve the absorption, excitation and emission spectra of the fluorescein monoanion in a number of solvent-water mixtures. This permitted an analysis of the effect of the solvent environment on the spectral properties of the monoanion and on the lactone/monoanion/dianion transitions of fluorescein. The monoanion excitation and emission spectra show relatively small changes with changing environment, a behavior that is related to the hydrogen-bonding environment of the solvent-water mixtures. There is also a general increase in the quantum yield of the monoanion from 0.36 in water to values up to 0.49 in the solvent-water mixtures. The presence of solvent also results in a general increase in the lactone content and in the monoanion:dianion and lactone:monoanion ratios. General polarity effects alone cannot account for the observed effects on the prototropic transitions indicating that specific solute-solvent effects involving hydrogen bonding perturb the prototropic equilibria of fluorescein.
EFFECT OF AN EXTERNAL HEAVY ATOM ON THE EPR SPECTRUM OF THE FLUORESCEIN SEMIQUINONE RADICAL
Klimchuk, E. S.,Makarov, B. P.,Serebrennikov, Yu. A.,Khudyakov, I. V.
, p. 1627 - 1630 (2007/10/02)
The effect of an external heavy atom on the EPR spectra of radicals in homogeneous liquid solutions was investigated.Broadening of the lines in the EPR spectrum of the fluorescein semiquinone radical in water-ethanol solution was found under the effect of the external heavy atom.It was hypothesized that this broadening is due to an increase in the anisotropy of the g-factor due to potentiation of the spin-orbital interaction on contact with the external heavy atom.
