TY - CONF A1 - Krüger, Ralph-Peter A1 - Much, Helmut A1 - Schulz, Günter T1 - New Results of Determination of Polymer Heterogeneity by Two-Dimensional Orthogonal Liquid Chromatography T2 - International GPC Symposium CY - Lake Buena Vista, FL, USA DA - 1994-06-05 PY - 1994 SP - 273 EP - 275 PB - Gordon and Breach CY - St. Helier, Jersey AN - OPUS4-2140 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Spickermann, J. A1 - Martin, K. A1 - Räder, H.J. A1 - Müllen, K. A1 - Schlaad, H. A1 - Müller, A. H. E. A1 - Krüger, Ralph-Peter T1 - Quantitative analysis of broad molecular weight distributions obtained by MALDI-TOF mass spectrometry PY - 1996 SN - 1469-0667 SN - 1356-1049 SN - 1365-0718 IS - 2 SP - 161 EP - 165 PB - IM Publications CY - Chichester AN - OPUS4-2153 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wachsen, O. A1 - Reichert, K.H. A1 - Krüger, Ralph-Peter A1 - Much, Helmut A1 - Schulz, Günter T1 - Thermal decomposition of biodegradable polyesters - III. Studies on the mechanisms of thermal degradation of oligo-L-lactide using SEC, LACCC and MALDI-TOF-MS PY - 1997 SN - 0141-3910 SN - 1873-2321 VL - 55 SP - 225 EP - 231 PB - Applied Science Publ. CY - London AN - OPUS4-2154 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Tressl, R. A1 - Wondrak, G. T. A1 - Krüger, Ralph-Peter A1 - Rewicki, D. T1 - New Melanoidin-like Maillard Polymers from 2-Deoxypentoses KW - Maillard system 2-deoxy-D-ribose / methylamine KW - Oligomerization of N-methyl-2-hydroxymethyl(and hydroxyl[13C]methyl)pyrrole KW - Antioxidative activity KW - Model compounds for melanoidins PY - 1998 SN - 0021-8561 SN - 1520-5118 VL - 46 IS - 1 SP - 104 EP - 110 PB - American Chemical Society CY - Columbus, Ohio AN - OPUS4-2158 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Tressl, R. A1 - Wondrak, G. T. A1 - Garbe, L.-A. A1 - Krüger, Ralph-Peter A1 - Rewicki, D. T1 - Pentoses and Hexoses as Sources of New Melanoidin-like Maillard-Polymers KW - Model compounds for melanoidins KW - Pyrroles from pentoses and hexoses KW - Beta-dicarbonyl pathway of the Maillard reaction KW - Polycondensation KW - MALDI-TOF-MS analysis KW - Antioxidative activity of oligomeric model compounds PY - 1998 SN - 0021-8561 SN - 1520-5118 VL - 46 IS - 5 SP - 1765 EP - 1776 PB - American Chemical Society CY - Columbus, Ohio AN - OPUS4-2159 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Tressl, R. A1 - Wondrak, G. T. A1 - Kersten, E. A1 - Krüger, Ralph-Peter A1 - Rewicki, D. ED - Shibamoto, T. ED - Terao, J. ED - Osawa, T. T1 - Identification of maillard type polymers with antioxidative activity T2 - 213th National Meeting of the American Chemical Society CY - San Francisco, CA, USA DA - 1997-04-13 PY - 1998 SN - 0-8412-3573-2 SN - 0097-6156 N1 - Serientitel: ACS Symposium Series – Series title: ACS Symposium Series IS - 702 SP - 209 EP - 220 PB - American Chemical Society CY - Washington, DC AN - OPUS4-2160 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Tressl, R. A1 - Kersten, E. A1 - Wondrak, G. T. A1 - Rewicki, D. A1 - Krüger, Ralph-Peter ED - O'Brien, J. T1 - Fragmentation of Sugar Skeletons and Formation of Maillard Polymers T2 - 6th International Symposium on the Maillard Reaction CY - London, England, UK DA - 1997-07-27 PY - 1998 SN - 0-85404-733-6 SN - 0260-6291 N1 - Serientitel: Special publication / Royal Society of Chemistry – Series title: Special publication / Royal Society of Chemistry IS - 223 SP - 69 EP - 75 PB - Royal Society of Chemistry CY - Cambridge AN - OPUS4-2161 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Veith, M. A1 - Elsässer, R. A1 - Krüger, Ralph-Peter T1 - Synthesis of Dendrimers with a N-Si-C Framework N2 - A novel family of air-stable dendrimers with a N-Si-C framework has been prepared up to the fourth generation. The divergent synthesis starts with the hydrosilylation of the trisilazane N(SiMe2vinyl)3 [0-G(vinyl)] by HSiMe2Cl, which gives the three-directional core molecule N(SiMe2CH2CH2SiMe2Cl)3 [0-G(Cl)]. A 1-to-2 branching achieved by reacting the core molecule [0-G(Cl)] with 3 equiv of KN(SiMe2vinyl)2 affords the first generation dendrimer [1-G(vinyl)]. By repeating the above two steps, the second [2-G(vinyl)], third [3-G(vinyl)], and fourth generation [4-G(vinyl)] can be obtained. The compounds have been characterized by 1H, 13C, and 29Si NMR spectroscopy, by elemental analysis, and up to the third generation by MALDI-TOF mass spectrometry. Gel permeation chromatography was used to prove the fourth generation [4-G(vinyl)]. PY - 1999 DO - https://doi.org/10.1021/om9807708 SN - 0276-7333 SN - 1520-6041 VL - 18 IS - 4 SP - 656 EP - 661 PB - American Chemical Society CY - Washington, DC AN - OPUS4-2162 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Krüger, Ralph-Peter A1 - Much, Helmut A1 - Schulz, Günter T1 - Determination of polymer heterogeneity by two-dimensional orthogonal liquid chromatography KW - Orthogonal chromatography KW - Size exclusion chromatography KW - Liquid adsorption chromatography at critical conditions KW - Matrix-assisted laser desorption ionization time-of-flight mass spectrometry KW - Polyester KW - Polyether PY - 1996 SN - 1023-666X SN - 1563-5341 VL - 2 SP - 221 EP - 235 PB - Gordon and Breach Publ. CY - Amsterdam AN - OPUS4-2146 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Sonnenschein, H. A1 - Kreher, T. A1 - Gründemann, E. A1 - Krüger, Ralph-Peter A1 - Kunath, A. A1 - Zabel, V. T1 - Novel Redox-Active Cyclophanes Based on 3,3'-Bisindolizines - Synthesis and Chirality PY - 1996 SN - 0022-3263 SN - 1520-6904 VL - 61 SP - 710 EP - 714 PB - American Chemical Society CY - Washington, DC AN - OPUS4-2147 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -