Please use this identifier to cite or link to this item: https://dspace.udpu.edu.ua/jspui/handle/6789/118
Title: A wide-range fluorescent pH-indicator based on 3-hydroxyflavone structure
Authors: Валюк, Вікторія Федорівна
Keywords: 3-hydroxyflavone
Issue Date: 2005
Publisher: Enter the name of the publisher of the previously issued instance of this item.
Series/Report no.: Chemistry 175;(2005) 226–231
Abstract: With the aim to develop wide-range pH-indicators, we synthesized a new water-soluble compound, 3,4 -dihydroxy-3 ,5 -bis- (dimethylaminomethyl)flavone (FAM345), which displays a spectral sensitivity to pH in the range from 2 to 12 in absorption spectra as well as in fluorescence excitation or emission spectra. In all three cases, the estimation of pH is possible, either from the position of the maxima or from the absorbance or fluorescence intensity at one or several separated wavelengths, or also from absorbance or fluorescence intensity ratios. This last feature allows determining pH value of the medium independently from the probe concentration, from its possible photobleaching, as well as from any variation of light source intensity (at least in fluorescence methods). © 2005 Elsevier B.V. All rights reserved.
URI: http://dspace.udpu.org.ua:8080/jspui/handle/6789/118
Appears in Collections:Природничо-географічний факультет

Files in This Item:
File Description SizeFormat 
J Photochem and photobiol.pdf183,71 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.