Analytical chemistry council

METHODS AND OBJECTS OF CHEMICAL ANALYSIS

(Metody i Ob''ekty Himicheskogo Analiza)

An international journal devoted to all aspects of Analytical chemistry

ISSN 2413-6166 (Online), ISSN 1991-0290 (Print)

Kiev University
 

Home Current issueArchiveCall for papars Contact us

cover

4-Amino-benzo[f]isoindole-1,3-dione Derivatives as Turn-on Fluorescent Indicators for Water Determination in Acetonitrile

R. Linnik*, I. Levkov, A. Chemnyi, O. Radchenko, Z. Voitenko, O. Zaporozhets

* Corresponding authors
Taras Shevchenko National University of Kyiv, Faculty of Chemistry, 64/13, Volodymyrska Str., Kyiv, Ukraine, 01601;
*e-mail linnik_ros@univ.kiev.ua

Methods Objects Chem. Anal., 2018, 13(4), p. 183-191

https://doi.org/10.17721/moca.2018.183-191 

Buy Article:

2 USD plus tax

DOI No.

preview the article

Abstract

4-Amino-9-(2,5-dioxo-pyrrolidin-1-phenyl-3-yl)-1-phenyl-benzo[f]isoindole-1,3-dione (1) and 4-amino-9-(2,5- dioxo-1-(4-methylphenyl)-pyrrolidin-3-yl)-1-(4-methylphenyl)-benzo[f]isoindole-1,3-dione (2) were studied as fluorescent indicators for water determination in acetonitrile. The intensity of fluorescence of these compounds in acetonitrile solutions increases in presence of water along with red shift of the emission peak. Intensity-based and wavelength-based procedures of water determination in acetonitrile are suggested with detection limit of 0.2 % (v/v) H2O in both cases. The linear response covers a concentration range of 0.2–20 % (v/v). The relative standard deviation at 1 % (v/v) water content is 0.20. The interferences of acetic acid, ammonia and metal ions have been studied. Ammonia and acetic acid don’t interfere with the determination of water by wavelength-based fluorescence technique. In intensity-based mode the determination of water is possible at concentration of these impurities up to 0.25 and 0.02 mol·L -1, respectively. Cu(II) ions have almost no effect on fluorescence of indicators up to 1·10 -5 mol·L -1 ; Zn (II) ions enhance fluorescence of 1 at concentration ≥ 5·10-6 mol·L-1 . The 4-amino-benzo[f]- isoindole-1,3-dione-based fluorescent indicators are pH-insensitive.

Keywords: 4-amino-benzo[f]isoindole-1,3-dione derivatives, turn-on fluorescence detection, water content, acetonitrile, solvatochromic shift

Article language: Ukr


Publisher:Taras Shevchenko National University, Kiev Ukraine

(Analytical chemistry department at Taras Shevchenko National University, 64 Vladimirskaya STR., Kiev, 01601 UKRAINE)
analysis@univ.kiev.ua, www.achem.univ.kiev.ua, +380-44-2393345

Papers published in Methods and Objects of Chemical Analysis are considered as publications suitable for PhD thesis

The journal website: www.moca.net.ua