TY  - JOUR
A1  - Beck, Michael
A1  - Stiel, H.
A1  - Leupold, Dieter
A1  - Winter, Bernd
A1  - Pop, D.
A1  - Vogt, U.
A1  - Spitz, Christian
T1  - Evaluation of the energetic position of the lowest excited singlet state of ß-carotene by NEXAFS and photoemission spectroscopy
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Spitz, Christian
A1  - Dähne, Siegfried
A1  - Ouart, Andre
A1  - Abraham, Hans-Werner
T1  - Proof of Chirality of J-Aggregates Spontaneously and Enantioselectivily Generated from Achiral Dyes
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Spitz, Christian
A1  - von Seggern, David
A1  - Grunwaldt, Gisela
A1  - Menzel, Ralf
T1  - Biochemical Diagnostics by Excited State Absorption Spectroscopy
Y1  - 2002
SN  - 0-8194-4365-4
ER  - 
TY  - JOUR
A1  - Spitz, Christian
A1  - Knoester, Jasper
A1  - Ouart, Andre
A1  - Dähne, Siegfried
T1  - Polarized absorption and anomalous temperature dependence of fluorescence depolarization in cylindrical j- aggregates
Y1  - 2002
ER  - 
TY  - JOUR
A1  - Grunwaldt, Gisela
A1  - Haebel, Sophie
A1  - Spitz, Christian
A1  - Steup, Martin
A1  - Menzel, Ralf
T1  - Multiple binding sites of fluorescein isothiocyanate moieties on myoglobin : photophysical heterogeneity as revealed by ground- and excited-state spectroscopy
Y1  - 2002
SN  - 1011-1344
ER  - 
TY  - JOUR
A1  - Lampoura, Stephania S.
A1  - Spitz, Christian
A1  - Dähne, Siegfried
A1  - Knoester, Jasper
A1  - Duppen, K.
T1  - The optical dynamics of excitons in cylindrical j-aggregates
Y1  - 2003
ER  - 
TY  - JOUR
A1  - von Seggern, David
A1  - Modrakowski, Claudia
A1  - Spitz, Christian
A1  - Schlüter, A. D.
A1  - Menzel, Ralf
T1  - Charge transfer initiated by optical excitation in diester substituted biphenylpyrene as a function of the solvent characterized by excited state absorption spectroscopy
N2  - Cross-sections for ground and excited state absorptions of the charge transfer system 3-(3-tert- butoxycarbonylamino-propyl)-4'-pyren-1-yl-biphenyl-2,5-dicarbo xylicacid dimethyl ester (Py-C) are determined from nonlinear absorption and fluorescence measurements as a function of solvent. While in non-polar solvents no stable charge transfer (CT) state occurs after optical excitation, in polar solvents the CT state is stabilized. (C) 2004 Elsevier B.V. All rights reserved
Y1  - 2004
ER  - 
TY  - JOUR
A1  - Tedeschi, Concetta
A1  - Li, L.
A1  - Möhwald, Helmuth
A1  - Spitz, Christian
A1  - von Seggern, David
A1  - Menzel, Ralf
A1  - Kirstein, Stefan
T1  - Engineering of layer-by-layer coated capsules with the prospect of materials for efficient and directed electron transfer
N2  - We show a Lefschetz fixed point formula for holomorphic functions in a bounded domain D with smooth boundary in the complex plane. To introduce the Lefschetz number for a holomorphic map of D, we make use of the Bergman kernel of this domain. The Lefschetz number is proved to be the sum of the usual contributions of fixed points of the map in D and contributions of boundary fixed points, these latter being different for attracting and repulsing fixed points
Y1  - 2004
ER  - 
TY  - JOUR
A1  - Li, L.
A1  - Möhwald, Helmuth
A1  - Spitz, Christian
A1  - von Seggern, David
A1  - Mucke, M.
A1  - Menzel, Ralf
T1  - Long-lived photoinduced charge separation inside polarity gradient capsules
Y1  - 2005
ER  - 
TY  - JOUR
A1  - Zhang, T.
A1  - Spitz, Christian
A1  - Antonietti, Markus
A1  - Faul, C. F.
T1  - Highly photoluminescent polyoxometaloeuropate-surfactant complexes by ionic self-assembly
N2  - Facile organization of the inorganic sandwiched heteropolytungstomolybdate K-13[Eu(SiW9Mo2O39)(2)] (E) into highly ordered supramolecular nanostructured materials by complexation with a series of cationic surfactants is achieved by the ionic self-assembly (ISA) route. The structure and phase behavior of the complexes were examined by IR spectroscopy, differential scanning calorimetry, optical microscopy, and small- and wide-angle X-ray scattering. This class of materials shows a number of interesting physicochemical properties, namely liquid-crystalline phases (both thermotropic and lyotropic) and strong photoluminescence. The photophysical behavior (fluorescence spectra, fluorescence lifetimes, fluorescence quantum yield) of the complexes differs widely in solid powders, films, and solutions. The amphiphilic cationic surfactants not only play a structural role but also have a strong influence on the photophysical properties of E. The photophysical behavior of E can in this way be easily modified by its organizational motifs
Y1  - 2005
ER  -