Analysis of Fluorescence Quenching of Coumarin Derivatives by 4-Hydroxy-TEMPO in Aqueous Solution

Żamojć, Krzysztof; Wiczk, Wiesław; Zaborowski, Bartłomiej; Jacewicz, Dagmara; Chmurzyński, Lech

doi:10.1007/s10895-013-1342-3

Cited by 36 publications

(9 citation statements)

References 33 publications

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“…Only four of the fluorescent probes studied (11)(12)(13)(14) exhibited this "reverse" polarity dependence of decreased intensity with decreased polarity; their structures are shown in probes, [50][51] namely showing decreased emission in decreased polarity. We have previously reported extensive studies of the host-guest inclusion of 7MC into various CDs.…”

Section: R a F T Fluorescent Probes Which Exhibit Decreased Emissiomentioning

confidence: 94%

The polarity sensitivity factor of some fluorescent probe molecules used for studying supramolecular systems and other heterogeneous environments

et al. 2018

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Fluorescence spectroscopy provides an excellent technique for investigating heterogeneous systems, due to its high sensitivity and the large effect of the local environment on molecular emission. In addition, the use of polarity-sensitive fluorescent probes as guests in supramolecular host–guest inclusion complexes can be exploited in fluorescent sensors. This paper identifies, tabulates, and quantifies a series of useful polarity-sensitive fluorescent probes, with a wide range of polarity-dependent fluorescence responses. The degree of polarity sensitivity is quantified using the polarity sensitivity factor (PSF), developed in our laboratory. In most cases, such polarity-sensitive probes show increased emission as the local polarity is decreased (PSF > 1); 10 such probes are described. However, less commonly, “reverse polarity dependence” can occur in which probe emission decreases with decreasing polarity (PSF < 1); four such probes are described. The mechanism for the observed polarity-induced fluorescence changes will also be discussed in selected representative cases. The purpose of this paper is to present details on a broad arsenal of polarity-sensitive fluorescence probes with varying properties, with potentially useful applications in the study of heterogeneous systems, including inclusion phenomena, and in practical applications such as fluorescent sensors, which will be useful to researchers studying supramolecular and other heterogeneous systems using fluorescence spectroscopy.

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Section: R a F T Fluorescent Probes Which Exhibit Decreased Emissiomentioning

confidence: 94%

The polarity sensitivity factor of some fluorescent probe molecules used for studying supramolecular systems and other heterogeneous environments

et al. 2018

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“…Although the determination of fluorescence quenching is able to give important knowledge on the photophysical processes occurring in the formation of coumarin complexes, few fluorescence quenching studies have been performed on the coumarins until now, most of them concerning only organic quenchers, and none the lanthanides [26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Fluorescence Quenching of Two Coumarin-3-carboxylic Acids by Trivalent Lanthanide Ions

Cissé¹,

Djandé²,

Capo‐Chichi³

et al. 2016

J Fluoresc

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The effects of various trivalent lanthanide ions (acetates of Ce, Er, Eu, Nd) on the electronic absorption and fluorescence spectra of un-substituted coumarin-3-carboxylic acid (CCA) and 7-N,N-diethylamino-coumarin-3-carboxylic acid (DECCA) have been investigated in dimethylsulfoxide (DMSO) at room temperature. Depending on the lanthanide ion nature and concentration, significant spectral changes of absorption bands occurred for both coumarin derivatives. These spectral changes were attributed to the formation of ground-state complexes between the coumarin carboxylate derivatives and lanthanide ions. The fluorescence quenching of CCA and DECCA upon increasing the lanthanide ion concentration was studied. Different quantitative treatments, including the Stern-Volmer equation, the Perrin equation and a polynomial equation, were applied and compared in order to determine the nature of the quenching mechanisms for both coumarin derivatives. The results suggested the contribution of both dynamic and static quenching. Significant differences of CCA and DECCA fluorescence quenching efficiency were also observed, depending on the lanthanide ion. DECCA fluorescence lifetime measurements, performed in the absence and in the presence of Ln, confirmed a contribution of static quenching.

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“…Although the studies on the fluorescence quenching (performed with steady state and transient methods) provide much information mainly about fluorescent dyes [21][22][23][24], such a technique has not been widely used for studies on TEMPO compounds as quenchers yet [25][26][27].…”

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confidence: 99%

Fluorescence quenching of 7-amino-4-methylcoumarin by different TEMPO derivatives

Żamojć

Wiczk

Zaborowski

et al. 2015

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Analysis of Fluorescence Quenching of Coumarin Derivatives by 4-Hydroxy-TEMPO in Aqueous Solution

Cited by 36 publications

References 33 publications

The polarity sensitivity factor of some fluorescent probe molecules used for studying supramolecular systems and other heterogeneous environments

The polarity sensitivity factor of some fluorescent probe molecules used for studying supramolecular systems and other heterogeneous environments

Fluorescence Quenching of Two Coumarin-3-carboxylic Acids by Trivalent Lanthanide Ions

Fluorescence quenching of 7-amino-4-methylcoumarin by different TEMPO derivatives

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