DUMON, P.; JONUSAUSKAS, Gediminas; DUPUY, F.; PEE, P.; RULLIERE, C.; LETARD, J. F.; LAPOUYADE, R.

doi:10.1021/j100092a002

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DUMON, P.
Centre de physique moléculaire optique et hertzienne [CPMOH]

JONUSAUSKAS, Gediminas
Centre de physique moléculaire optique et hertzienne [CPMOH]

DUPUY, F.
Centre de physique moléculaire optique et hertzienne [CPMOH]

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The Journal of physical chemistry. 1994-10-01, vol. 98, n° 41, p. 10391-10396

American Chemical Society (ACS)

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Sub-picosecond absorption spectroscopy is used to examine the dynamics of calcium—azacrown interactions in the excited state of 4-(7V-monoaza-15-crown-5)-4,-phenylstilbene, in butyronitrile. This intrinsic fluorescence probe leads (in 8 ± 2 ps) to a new emitting state which is assigned to a twisted intramolecular charge transfer state. When the probe is complexed with Ca2+, the kinetic evolution of the absorption and gain bands is interpreted by a reversible breaking (in 8 ± 2 ps) of the nitrogen—calcium bond followed by the reversible formation (in 50 ± 10 ps) of a solvent-separated cation-probe pair.< Leer menos

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Picosecond Dynamics of Cation-Macrocycle Interactions in the Excited State of an Intrinsic Fluorescence Probe: The Calcium Complex of 4-(N-Monoaza-15-crown-5)-4'-phenylstilbene

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