Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Jean Kossanyi"'
Autor:
Jean Kossanyi, Driss Chahraoui
Publikováno v:
International Journal of Photoenergy, Vol 2, Iss 1, Pp 9-15 (2000)
An electron-transfer reaction takes place in the ground state between phthalocyanines (as electron-donors) and pyrylium cations (as electron-acceptors) in polar solvents, reaction which leads to the phthalocyanine radical-cations as evidenced by its
Externí odkaz:
https://doaj.org/article/e9c4c102c8f44cb391b15f3ba2fca0fd
Autor:
Gaston Hui Bon Hoa, Sergey P. Gromov, Boris M Uzhinov, Jean Kossanyi, Valery V. Volchkov, Mikhail V. Alfimov
Publikováno v:
Journal of Physical Organic Chemistry. 18:21-25
Neutral quinolyl-and pyridyl-substituted hetarylazoles and their protonated (ethylated) cations with anomalously high Stokes shifts were investigated. Fluorescence measurements at different temperatures and pressures confirmed the viscosity-dependent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79229f95d951bbe04bb504a2858b8e4c
https://doi.org/10.1002/poc.806
https://doi.org/10.1002/poc.806
Publikováno v:
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 57:1183-1190
The preparation and the solvatochromic behavior of two dyes, obtained by condensation of N , N ′-dimethylbarbituric acid with dimethylaminobenzaldehyde and with 4,4′-bis( N , N -dimethylamino)benzophenone (Michler's ketone) are described. The lat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c56727f79b2e6cee5533ebfca83f01a
https://doi.org/10.1016/s1386-1425(00)00461-3
https://doi.org/10.1016/s1386-1425(00)00461-3
Autor:
Jean Kossanyi, Véronique Wintgens, Thomas Hartmann, Yongsheng Tan, Pierre Valat, Heinz Dürr, Volker Huch
Publikováno v:
The Journal of Organic Chemistry. 66:1130-1137
A new photochromic family of tetrahydroazepinoisoquinolines (THAI) 4a-i has been prepared. It undergoes light-induced ring opening from spiro compounds 4 to betaines 3 that decolorize in a very fast cyclizing reaction. Depending on substitution of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1868b7fadc9b5c0dadac3f835f46325
https://doi.org/10.1021/jo000807+
https://doi.org/10.1021/jo000807+
Publikováno v:
Synthesis. 2001:1812-1817
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3699e6373b1023730dd35883c635d7d
https://doi.org/10.1055/s-2001-17528
https://doi.org/10.1055/s-2001-17528
Publikováno v:
Journal of Luminescence. 91:71-77
The room temperature triboluminescence of Er3+, Eu3+, Ho3+, Sm3+ and Tm3+ ions in the 400–850 nm range was observed during the abrasion of sintered polycrystalline ZnO samples containing the rare earth (RE) sesquioxides. The triboluminescence spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4de5ba00bddc78ce56ede07224d5307
https://doi.org/10.1016/s0022-2313(00)00204-0
https://doi.org/10.1016/s0022-2313(00)00204-0
Publikováno v:
Berichte der Bunsengesellschaft für physikalische Chemie. 102:1449-1458
The spectroscopic properties of 4-methyl-6-phenyl-2,2-difluoro-1,3,2-dioxaborine 1 and of several of its derivatives 2–5 substituted in para position on the phenyl ring or bearing an alkylene chain between their carbo-cyclic and heterocyclic rings
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::616fa82a3d070cf1fd454f389c4b6d7c
https://doi.org/10.1002/bbpc.199800013
https://doi.org/10.1002/bbpc.199800013
Autor:
László Biczók, Tibor Bérces, Véronique Wintgens, Jean Kossanyi, Pierre Valat, Attila Demeter, P. Nemes
Publikováno v:
Scopus-Elsevier
The photophysics of a series of N -alkyl- and N -cycloalkyl-substituted 1,2-naphthalimides has been investigated. Fluorescence spectra, fluorescence quantum yields and decay times as well as triplet yields are determined in a wide temperature range.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7d26f954a343d68628964b57254d6de
https://doi.org/10.1016/s1010-6030(97)00339-0
https://doi.org/10.1016/s1010-6030(97)00339-0
Autor:
Pierre Valat, Jean Kossanyi, Véronique Wintgens, Heinz Dürr, Patrick Scheidhauer, Heike Bleisinger
Publikováno v:
The Journal of Organic Chemistry. 63:990-1000
New photochromic spirodihydroindolizines (DHI) that are mono- (1a−e) or biphotochromic (3a−e) have been prepared. The monophotochromic DHIs 1d and 1e contain sterically highly demanding substituents. Photophysical studies, both static and time-re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a77b56841d409c62fce75c7b060704e
https://doi.org/10.1021/jo971182r
https://doi.org/10.1021/jo971182r
Publikováno v:
Journal of Luminescence. 75:35-49
The photoluminescence of polycrystalline sintered ZnO codoped with Li + and trivalent rate-earth (RE 3+ ) ions (Dy 3+ , Er 3+ , Eu 3+ , Ho 3+ , Nd 3+ , Sm 3+ and Tm 3+ ) has been studied. The luminescence spectra depend upon the nature of the rare ea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b8495ca9b865c8f1368c50befc521f9
https://doi.org/10.1016/s0022-2313(97)00093-8
https://doi.org/10.1016/s0022-2313(97)00093-8