TY  - JOUR
A1  - Koetz, Joachim
A1  - Beitz, Toralf
A1  - Tiersch, Brigitte
T1  - Self assembled polymer-surfactant systems
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Beitz, Toralf
A1  - Bechmann, Wolfgang
A1  - Mitzner, Rolf
T1  - Investigation on the photoreactions of Nitrate and Nitrite ions with selected Azaarenes in water
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Tessmann, Joachim
A1  - Beitz, Toralf
A1  - Bechmann, Wolfgang
A1  - Mitzner, Rolf
T1  - Untersuchungen zu Toxizitätsänderungen in Photoreaktionen von Azaarenen
Y1  - 1999
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Beitz, Toralf
A1  - Kosmella, Sabine
A1  - Tiersch, Brigitte
T1  - Polymer-modified microemulsions
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Beitz, Toralf
A1  - Koetz, Joachim
A1  - Wolf, Gunter
A1  - Kleinpeter, Erich
A1  - Friberg, Stig E.
T1  - Poly(N-vinyl-2-pyrrolidone) and 1-octyl-2-pyrrolidinone modified ionic microemulsions
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Kosmella, Sabine
A1  - Beitz, Toralf
T1  - Self-assembled Polyelectrolyte Systems
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Beitz, Toralf
A1  - Laudien, Robert
A1  - Löhmannsröben, Hans-Gerd
A1  - Kallies, Bernd
T1  - Ion mobility spectrometric investigation of aromatic cations in the gas phase
N2  - In this work, ion mobility (IM) spectra of more than 50 aromatic compounds were recorded with a laser-based IM spectrometer at atmospheric pressure. IM spectra of PAH in the laser desorption experiment show a high complexity resulting from the occurrence of monomeric, dimeric, and oligomeric cluster ions. The mobilities of all compounds were determined in helium as drift gas. This allows the calculation of the diffusion cross sections (Omega(calc)) on the basis of the exact hard sphere scattering model and their comparison with the experimentally determined diffusion cross sections (Omega(exp)). Extended Omega(exp)/Omega(calc) and Omega(exp/)mass correlations were performed in order to gain insight into conformational properties of cationic alkyl benzenes and internal rotation of phenyl rings in aromatic ions. This is demonstrated with some examples, such as the evaluation of the dihedral angle of the ions of 9,10- diphenylanthracene, o- and m-terphenyl, and 1,2,3- and 1,3,5-triphenylbenzene. Furthermore, sandwich and T-structures of dimeric PAH cations are discussed. The analysis was extended to oligomeric ions with up to nine monomer units. Experimental evidence is presented suggesting the formation of pi-stacks with a transition toward modified pi-stacks with increasing cluster size. The distance between monomeric units in dimeric and oligomeric ions was obtained
Y1  - 2006
UR  - http://pubs.acs.org/journal/jpcafh
U6  - https://doi.org/10.1021/Jp055335n
SN  - 1089-5639
ER  -