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Spectroscopy and Photophysics of 3'-[p-(dimethylamino)phenyl]spiro-[fluorene-9,4'-oxazolidine]-2',5'-dione

100%

Dobkowski J., Kołos R., Waluk J.

Acta Physica Polonica A

1995

vol. 88

issue 3

445-454

Electronic absorption and emission spectroscopy of the title molecule has been studied in solution, low-temperature glasses and polymer matrices. No luminescence could be observed down to 77 K. In the presence of water, the formation of the hydrated species was observed, accompanied by the appearance of phosphorescence. The structure and spectra of both forms were calculated using molecular mechanics and quantum chemical methods. The lack of phosphorescence in the anhydride is interpreted as due to proximity effects in the triplet manifold.

Orientation of Single Dibenzanthanthrene Molecules in Solid Xenon

100%

Sepioł J., Kołos R., Jasny J.

Acta Physica Polonica A

2007

vol. 112

issue S

S-121-S-126

The spatial distributions of individual dibenzanthanthrene electronic transition dipole moments in solid Xe was investigated at the single molecule level, with the high-resolution fluorescence spectroscopy. Samples were prepared by the co-deposition of dibenzanthanthrene/Xe vapours onto the 50 K surface. The results indicate that the orientation of planar aromatic molecules is preferentially parallel to the trapping surface.

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2 Acta Physica Polonica A

1 2007

1 1995

2 Kołos R.

1 Dobkowski J.

1 Jasny J.

1 Sepioł J.

1 Waluk J.

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Spectroscopy and Photophysics of 3'-[p-(dimethylamino)phenyl]spiro-[fluorene-9,4'-oxazolidine]-2',5'-dione

Orientation of Single Dibenzanthanthrene Molecules in Solid Xenon