Novel fluorescent probe.  Use of time-correlated fluorescence to explore the properties of micelle-forming detergent

Hautala, Richard R.; Schore, Neil E.; Turro, Nicholas J.

doi:10.1021/ja00798a013

Cited by 102 publications

(49 citation statements)

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“…This result is consistent with the Dorrance and Hunter report (1972) that pyrene fluorescence yield in HDTBr was not changed upon deoxygenation. Anomalous behaviour of aromatic hydrocarbon fluorescence in HDTBr has been reported and explained previously (Hautala et al, 1973;Gratzel and Thomas, 1973;Patterson and Vieil, 1973. Bromide ion is known to quench aromatic hydrocarbon fluorescence (Watkins, 1974). The high local concentration of Br-around the micelle enhances this quenching effect, causing shorter pyrene lifetimes to be observed in air and N, saturated HDTBr solutions.…”

Section: Resultssupporting

confidence: 67%

“…In addition, the quenching effects in HDTBr are not as great for pyrene compared to naphthalene. The rate constant, k,, for bromide quenching of naphthalene fluorescence in water is approximately 2 x lo* mol-' s-' (Hautala et al, 1973). We have obtained k, ,.…”

Section: Resultsmentioning

confidence: 74%

“…Aromatic hydrocarbons exhibit environment dependent fluorescence lifetime and polarization (e.g. Hautala et a!., 1973;Shinitsky et al, 1971; . These properties can be used to characterize the probe environment in biological systems.…”

Section: Introductionmentioning

confidence: 99%

“…Hautala et al, 1973;Infelta et al, 1974;Patterson & Vieil, 1974;Chen et al, 1974Soutar et al, 1974Cheng et al, 1974). Although oxygen quenching of aromatic hydrocarbon fluorescence has been studied in proteins (Vaughan & Weber, 1970;Lakowicz & Weber, 1973), the question of oxygen permeability in micelles has not been resolved.…”

Section: Introductionmentioning

confidence: 99%

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Pyrene Fluorescence Lifetime as a Probe for Oxygen Penetration of Micelles

Geiger

Turro

1975

Photochem & Photobiology

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Section: Resultssupporting

confidence: 67%

Section: Resultsmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pyrene Fluorescence Lifetime as a Probe for Oxygen Penetration of Micelles

Geiger

Turro

1975

Photochem & Photobiology

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“…These molecules which often have a very low solubility in water can be adsorbed onto the micellar surface [88], can move close to the hydrophobic chains of the monomers next to the heads or be buried deeper inside the micelle, in a region called the core [89,90]. These different positions are only average positions since the monomers move around the micelle as well as in and out of the micelle, which is in fact a dynamic structure [91].…”

Section: Micelles Structure and Propertiesmentioning

confidence: 99%

Luminescence in organized media and supramolecular interactions:physicochemical aspects and applications

Lerner¹,

Martín²

2000

Analusis

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Introduction Molecular luminescence of analytes in organized media or in supramolecular complexes of cyclodextrinsThe photophysical and photochemical behaviour of molecules complexed to cyclodextrins (CD) is generally different from their behaviour in solution. The first observations in the field were qualitative and were related to the increased stabilisation of labile molecules, mostly drugs, against photodegradation when complexed to natural cyclodextrins [1]. Complexation by CD's was then the preferred subject for those involved in supramolecular chemistry and drug vectorisation techniques [2] as well as in separation techniques [3][4][5]. Stabilization of a molecule against photochemical degradation is still very important in the field of pharmaceutical sciences. A recent example is the stabilisation of promazine as an inclusion complex with β-cyclodextrin [6]. Other photochemists were attracted quite early to this field of research and initiated studies, which were mostly photophysical in nature [7,8]. The key observation was that the formation of supramolecular complexes of analytes with cyclodextrins (CDs) resulted in an increase of their fluorescence quantum yield or even in the appearance of room temperature phosphorescence (RTP) [9][10][11][12]. This enhancement has been used to increase the sensitivity and the selectivity in both luminescence and chromatographic techniques [13-15].We will not say more about RTP with CDs as the subject will be developed in another contribution in the same issue of this Journal. However RTP is also observed in the solubilization of analytes in micellar colloïdal solutions and this field will be reviewed hereunder.These properties have been used to develop analytical techniques, which combine the selectivity of complexation with an enhanced emission [16][17][18][19]. In this way an improvement in the detection limits is obtained in many separation techniques such as HPLC, capillary electrophoresis (CE) or planar chromatography. Furthermore these molecular interactions allow to reveal or to stabilize new molecular forms or to turn species which are normally non-emitting into luminescent ones. All these aspects are reviewed hereunder after a short summary on the nature of the intermolecular interactions, which lie at the heart of these effects. Nature of the interactions between an analyte and a CD or a micelleWithout going into a thorough analysis of the origin of the interactions which exist between molecules in dense media which concern us here, it seems useful to recall the most important factors which should be taken into account when any type of luminescence, fluorescence or phosphorescence is involved.

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Photophysikalische und photochemische Prozesse in micellaren Systemen

1980

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712 0 Verlag Chemie, GmbH. 0.6940 Weinheim, 1YKO Wertvolle Informationen iiber Zusammensetzung, Struktur und dynamische Eigenschaften dieser Micellen sind durch Photolumineszenz-Experimente erhaltlich. Wir zeigen, wie photolumineszierende und photochemische Sonden zur Erforschung der Micellstruktur und der Phasentrennung in diesen mikroheterogenen Systemen dienen konnen. Uberdies wird darauf hingewiesen, daR sich photophysikalische und photochemische Reaktionen in micellaren Systemen von analogen Prozessen in homogener Losung erheblich unterscheiden"'. 0044-K249/80/0909~0712 $ 02.50/0 Angew. Chem. 92, 712-734 (1980) Angew. Chem. 92, 712-734 (1980) Angew. Chem. 92, 712-734 (19x0) Angew. Chem. 92, 71 2-734 ( I 980)

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Novel fluorescent probe. Use of time-correlated fluorescence to explore the properties of micelle-forming detergent

Cited by 102 publications

References 1 publication

Pyrene Fluorescence Lifetime as a Probe for Oxygen Penetration of Micelles

Pyrene Fluorescence Lifetime as a Probe for Oxygen Penetration of Micelles

Luminescence in organized media and supramolecular interactions:physicochemical aspects and applications

Photophysikalische und photochemische Prozesse in micellaren Systemen

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