TY - JOUR A1 - El Malah, T. A1 - Ciesielski, A. A1 - Piot, L. A1 - Troyanov, S.I. A1 - Mueller, U. A1 - Weidner, Steffen A1 - Samorì, P. A1 - Hecht, S. T1 - Conformationally pre-organized and pH-responsive flat dendrons: synthesis and self-assembly at the liquid-solid interface N2 - Efficient Cu-catalyzed 1,3-dipolar cycloaddition reactions have been used to prepare two series of three regioisomers of G-1 and G-2 poly(triazole-pyridine) dendrons. The G-1 and G-2 dendrons consist of branched yet conformationally pre-organized 2,6-bis(phenyl/pyridyl-1,2,3-triazol-4-yl)pyridine (BPTP) monomeric and trimeric cores, respectively, carrying one focal and either two or four peripheral alkyl side chains. In the solid state, the conformation and supramolecular organization were studied by means of a single crystal X-ray structure analysis of one derivative. At the liquid–solid interface, the self-assembly behavior was investigated by scanning tunneling microscopy (STM) on graphite surfaces. Based on the observed supramolecular organization, it appears that the subtle balance between conformational preferences inherent in the dendritic backbone on the one side and the adsorption and packing of the alkyl side chains on the graphite substrate on the other side dictate the overall structure formation in 2D. KW - Dendrons KW - MALDI Massenspektrometrie PY - 2012 DO - https://doi.org/10.1039/c1nr11434d SN - 2040-3364 SN - 2040-3372 VL - 4 SP - 467 EP - 472 PB - RSC Publ. CY - Cambridge AN - OPUS4-25378 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Pospiech, D. A1 - Fischer, O. A1 - Korwitz, A. A1 - Hoffmann, T. A1 - Köppl, T. A1 - Altstädt, V. A1 - Ciesielski, M. A1 - Döring, M. A1 - Brehme, Sven A1 - Schartel, Bernhard A1 - Vollmerhausen, D. T1 - Designed flame retardancy with phosphorus polymers N2 - Polymeric flame retardants offer the possibility to match effective flame retardancy with the requirements of new regulations. Synthesis, properties and efficiency in polymer matrices are discussed for two systems, epoxy resins as well as poly(butylene terephthalate). T2 - 25th Annual conference: Recent advances in flame retardancy of polymeric materials CY - Stamford, Connecticut, USA DA - 18.05.2014 KW - Flame retardancy KW - Phosphorus polymer KW - Poly(butylene terephthalate) KW - Epoxy resin PY - 2014 SP - 1 EP - 5 AN - OPUS4-30951 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -