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Titolo:
SOLVENT STUDY ON THE 9-SUBSTITUTED QUINOLIZINOCOUMARINS USED AS PRECOLUMN FLUORESCENT AND CHEMILUMINESCENT REAGENTS IN LIQUID-CHROMATOGRAPHY
Autore:
TRAORE F; PROGNON P; MAHUZIER G;
Indirizzi:
UNIV PARIS 11,FAC PHARM,CHIM ANALYT LAB 2,5 RUE JB CLEMENT F-92290 CHATENAY MALABRY FRANCE UNIV CONAKRY,FAC MED & PHARM CONAKRY GUINEA
Titolo Testata:
Analytica chimica acta
fascicolo: 1, volume: 294, anno: 1994,
pagine: 75 - 84
SICI:
0003-2670(1994)294:1<75:SSOT9Q>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOLVATOCHROMIC COMPARISON METHOD; ELECTRONIC SPECTRA; DERIVATIZATION; PROBES; SCALE; 2-AMINONAPHTHALENE-6-SULFONATE; LUMINARIN-1; MOLECULES; STATE;
Keywords:
FLUOROMETRY; CHEMILUMINESCENCE; LIQUID CHROMATOGRAPHY; LUMINARIN; QUINOLIZINOCOUMARINS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
F. Traore et al., "SOLVENT STUDY ON THE 9-SUBSTITUTED QUINOLIZINOCOUMARINS USED AS PRECOLUMN FLUORESCENT AND CHEMILUMINESCENT REAGENTS IN LIQUID-CHROMATOGRAPHY", Analytica chimica acta, 294(1), 1994, pp. 75-84

Abstract

9-substitued fluorescent quinolizinocoumarin derivatives (luminarins)were extensively studied spectroscopically, because of the wide variation in the emissions observed during liquid chromatographic detectionin different mobile phases. Photophysical parameters measured at roomtemperature (lambda(ex), lambda(em), lambda(max), nu(a)(')-nu(f)('), Stokes' shift, relative quantum yield of fluorescence (phi(f)), singlet level energy, molar absorptivity, etc.) were measured for eleven quinolizinocoumarin derivatives in twelve solvents. The observed spectroscopic variations associated with the change in solvents were analysed in terms of modification in the microenvironment of the luminarin derivatives. For this, a multiple linear regression analysis was performedin the linear solvation energy relationships model. The same regression model was used to describe and demonstrate the correlation between the structure of 9-sided chains and the observed spectral modifications. Finally, the practical consequences of such a study allowed the influence of the microenvironment on the fluorescence detection of luminarin derivatives after normal and reversed phase liquid chromatography to be demonstrated.

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Documento generato il 01/04/20 alle ore 11:44:53