Luminescent material or phosphor having a solid matrix within wh

Compositions – Organic luminescent material containing compositions

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25230134, 25230135, C09K 1106

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active

046474005

ABSTRACT:
The invention relates to a luminescent material or phosphor having a solid matrix within which is distributed a fluorescent compound, its preparation process and its use in a photovoltaic cell.
This luminescent material comprises a solid matrix having groups able to form hydrogen bonds, e.g. glass, polyamide or polyvinyl alcohol, and an organic compound which, by internal torsion, can have an excited state with charge transfer, distributed in the matrix, such as para-N,N-dimethylaminobenzonitrile (DMABN) or N,N-1-bimethylamino-4-cyanonaphtalene.

REFERENCES:
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Dubroca, C., Chemical Physics Letters, vol. 15, No. 2, pp. 207-210 (1972).
Dubroca, C., et al, Chemical Physics Letters, vol. 24, No. 1, pp. 49-54 (1974).
Kadiri, A., et al, Chemical Physics Letters, vol. 65, No. 3, pp. 484-489 (1979).
Chemical Abstracts, vol. 99, p. 536, Abstract No. 79453(a), Cazeau-Dubroca et al, "Twisted Internal Charge-Transfer Fluorescence of p-(Dimethylamino)benzonitrile in Rigid Matrix at Room Temperature", (1983).
Chemical Abstracts, vol. 95, p. 599, Abstract No. 178186(q), Cazeau-Dubroca et al, "New Temperature Effect on the `Hidden Bond` of N,N-Dimethylaniline in a Polyethylene Matrix", (1981).
Zander, Zeits. fur Naturf. 24A (1969) #2, pp. 254-257.
Khalil et al., Chemical Abstracts 88 (1978) #143742.
Grabowski, J. Luminescence, vol. 18/19 (1979), pp. 420-424.
Grabowski et al., Pure and Applied Chem., 55 (1983), pp. 245-252.

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