Fluorescence of 9,10-dimethylanthracene in solutions containing diisopropylnaphthaline and in solid cyclodextrin complexes

Wolff, Thomas; Pfanner, Klaus; Springob, Christian

doi:10.1016/1010-6030(93)80123-q

Cited by 9 publications

(15 citation statements)

References 13 publications

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“…The slowest decay component of the DMA−γ-CD system obtained with the detection of the excimer-like emission was lengthened to τ 3 = 34.5 ns. This value is very close to the previously reported lifetime (30 ns) of a solid complex of DMA and γ-CD . The lengthening of the fluorescence lifetime of the DMA dimer from the monomer can be qualitatively explained by the vector composition of electronic transition dipoles of each monomer unit.…”

Section: Resultssupporting

confidence: 90%

Structure and Excitation Relaxation Dynamics of Dimethylanthracene Dimer in a γ-Cyclodextrin Nanocavity in Aqueous Solution

et al. 2006

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Dimethylanthracene (DMA), which exhibits almost no self-association in bulk organic solvents, forms a dimer and emits excimer-like fluorescence in a gamma-cyclodextrin nanocavity in a dilute aqueous solution. The 1Bb and 1La electronic transitions of the DMA dimer split by 2230 and 344 cm(-1), respectively, in a fluorescence excitation spectrum obtained with the excimer-like emission. From these energy splits, the structure of dimer in relation to a dielectric constant inside gamma-CD was discussed on the basis of atom-atom Lennard-Jones potential calculations including Coulombic interactions. Excitation relaxations of DMA in the presence of alpha-, beta-, and gamma-CDs in aqueous solutions were investigated by time-resolved fluorescence. The results suggest that both the hydrated and anhydrated species exist in the alpha- and gamma-CD complexes, while only the anhydrated species exists in the beta-CD complex.

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Section: Resultssupporting

confidence: 90%

Structure and Excitation Relaxation Dynamics of Dimethylanthracene Dimer in a γ-Cyclodextrin Nanocavity in Aqueous Solution

et al. 2006

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“…For example, the fluorescence of pyrene within NaY zeolites has been used to study the nonuniform distribution of organic molecules within these supramolecular structures. 49 Fluorescent solid host-guest inclusion complexes of cyclodextrins have also been reported, for example with 9,10-dimethylanthracene 50 and 1,8-ANS 20 as the fluorescent guest. In these solids, it is assumed that the fluorescent guests are included singly inside the cyclodextrin cavities and thus are individually isolated from each other.…”

Section: Discussionmentioning

confidence: 99%

The Lattice Inclusion Compound of 1,8-ANS and Cucurbituril: A Unique Fluorescent Solid

Wagner

MacRae

1999

J. Phys. Chem. B

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A solid precipitate is formed immediately upon the mixing of aqueous salt solutions of the fluorescence probe 1-anilino-8-naphthalenesulfonate (1,8-ANS) and the cage compound cucurbituril. The resulting solid compound is highly fluorescent, with a maximum emission at ca. 478 nm. Single crystals of this compound were obtained and studied by X-ray crystallography. The crystal structure indicates a rather novel solid fluorescent compound, described as a lattice inclusion compound, in which the smaller 1,8-ANS molecules have cocrystallized in the lattice of the cucurbituril cages. This structure is in effect a highly ordered solid solution, in which the fluorescent 1,8-ANS molecules are well separated from each other by the larger cucurbituril molecules. This separation of the fluorescent probe molecules by the nonabsorbing (in the visible range) cucurbituril spacers prevents interaction of the 1,8-ANS fluorophores and results in a highly fluorescent solid.

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“…Results were as follows: 9-methylanthracene, T fus = 354. 8 ). Purity was checked by the consistent results obtained from the combustion experiments, as well as by the closeness to unity of the carbon dioxide recovery ratios for each compound.…”

Section: Compounds and Purity Controlmentioning

confidence: 93%

“…Further, the latter compound is also employed as a fluorophore [7,8] and, recently, it has found medical application, since its photo-oxidation is used to evaluate the singlet molecular oxygen production, which is applied in photodynamic therapy, a new technique for treating cancer [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Thermochemistry of some alkylsubstituted anthracenes

Silva

Amaral

Santos

et al. 2006

The Journal of Chemical Thermodynamics

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Fluorescence of 9,10-dimethylanthracene in solutions containing diisopropylnaphthaline and in solid cyclodextrin complexes

Cited by 9 publications

References 13 publications

Structure and Excitation Relaxation Dynamics of Dimethylanthracene Dimer in a γ-Cyclodextrin Nanocavity in Aqueous Solution

Structure and Excitation Relaxation Dynamics of Dimethylanthracene Dimer in a γ-Cyclodextrin Nanocavity in Aqueous Solution

The Lattice Inclusion Compound of 1,8-ANS and Cucurbituril: A Unique Fluorescent Solid

Thermochemistry of some alkylsubstituted anthracenes

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