TY - JOUR A1 - Poppenberg, J. A1 - Richter, S. A1 - Traulsen, Ch. H.-H. A1 - Darlatt, Erik A1 - Baytekin, B. A1 - Heinrich, Thomas A1 - Deutinger, P. M. A1 - Huth, K. A1 - Unger, Wolfgang A1 - Schalley, Ch. T1 - Programmable multilayers of nanometer-sized macrocycles on solid support and stimuli-controlled on-surface pseudorotaxane formation N2 - Mechanically interlocked molecules (MIMs) such as rotaxanes and catenanes are capable of mechanical motion on the nanoscale and are therefore promising prototypes for molecular machines in recent nanotechnology. However, most of the existing examples are isotropically distributed in solution, which prohibits concerted movement and with it the generation of macroscopic effects. Thus, arranging them in ordered arrays is of huge interest in recent research. We report the deposition of quite densely packed multilayers of tetralactam macrocycles on gold surfaces by metal-coordinated layer-by-layer self-assembly. Linear dichroism effects in angle-resolved NEXAFS spectra indicate a preferential orientation of the macrocycles. The sequence of the metal ions can be programmed by the use of different transition metal ions at each deposition step. Additionally, reversible on-surface pseudorotaxane formation was successfully realized by repeated uptake and release of axle molecules inside the macrocycles cavities. KW - NEXAFS KW - XPS KW - Supramolecular Chemistry KW - Multilayers KW - Pyridine KW - UV/Vis KW - Macrocycles KW - Pseudorotaxanes PY - 2013 DO - https://doi.org/10.1039/c3sc50558h VL - 4 IS - 8 SP - 3131 EP - 3139 AN - OPUS4-42668 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - SR-XPS and NEXAFS characterization of layer stacks formed by self-assembly and layer-by-layer deposition exploiting coordination chemistry T2 - Joint BER II and BESSY II Users' Meeting CY - Berlin, Germany DA - 2010-12-09 PY - 2010 AN - OPUS4-23070 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - Characterization of a rotaxane toplayer stack formed by self-assembly and layer-by-layer deposition exploiting coordination chemistry T2 - Berliner Chemie Symposium 2011 CY - Berlin, Germany DA - 2011-04-07 PY - 2011 AN - OPUS4-23547 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - ToF-SIMS study of the palladium(II) coordination on a pyridyl terminated self assembled monolayer T2 - SIMS XVIII CY - Riva del Garda, Italy DA - 2011-09-18 PY - 2011 AN - OPUS4-24197 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - Introduction of bulky donor head groups on a self assembled monolayer on gold exploiting click chemistry T2 - ECASIA 2011 CY - Cardiff, Wales DA - 2011-09-04 PY - 2011 AN - OPUS4-24201 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - Surface Chemical Analysis of immobilized Coordination Compounds based on Self assembled Monolayers on Gold T2 - ECASIA 2011 CY - Cardiff, Wales DA - 2011-09-04 PY - 2011 AN - OPUS4-24202 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - Evidence of click, coordination and side reactions on a self-assenbled monolayer by synchrotron radiation based XPS and NEXAFS T2 - 2. Berliner Chemie Symposium CY - Berlin, Germany DA - 2012-04-03 PY - 2012 AN - OPUS4-25679 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Poppenberg, J. A1 - Richter, S. A1 - Darlatt, Erik A1 - Traulsen, C.H.-H. A1 - Min, Hyegeun A1 - Unger, Wolfgang A1 - Schalley, C.A. T1 - Successive coordination of palladium(II)-ions and terpyridine-ligands to a pyridyl-terminated self-assembled monolayer on gold N2 - The deposition of palladium on a novel, reversibly protonatable, pyridyl-terminated self-assembled monolayer on gold substrates has been studied by X-ray photoelectron spectroscopy (XPS), near-edge X-ray absorption fine structure spectroscopy (NEXAFS spectroscopy) and time of flight-secondary ion mass spectrometry (ToF-SIMS). For this purpose, 12-(pyridin-4-yl)dodecane-1-thiol, consisting of a surface-active head group, an unfunctionalized hydrocarbon backbone and a terminal pyridyl group, has been synthesized and deposited on gold surfaces. Coordination of Pd(II) ions to the pyridyl group was examined. Furthermore, a reversible protonation/deprotonation cycle has been applied, and the relation between protonation and the amount of complexed palladium was studied. Investigation of the SAM by angle-resolved NEXAFS spectroscopy revealed the aliphatic backbone to be preferentially upright oriented with the aromatic head group being not preferentially oriented. The palladium layer was further coordinated with a CF3-labeled terpyridine ligand in order to prove the accessibility of the Pd(II) ions to further complexation and the platform useful for deposition of further layers toward a multi-layered system. KW - Supramolecular surface chemistry KW - Pyridine terminated monolayer KW - NEXAFS spectroscopy KW - ToF-SIMS KW - Pyridine-metal coordination PY - 2012 DO - https://doi.org/10.1016/j.susc.2011.10.020 SN - 0039-6028 VL - 606 IS - 3-4 SP - 367 EP - 377 PB - Elsevier CY - Amsterdam AN - OPUS4-25282 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Darlatt, Erik A1 - Traulsen, C.H.-H. A1 - Poppenberg, J. A1 - Richter, S. A1 - Kühn, Julius A1 - Schalley, C.A. A1 - Unger, Wolfgang T1 - Evidence of click and coordination reactions on a self-assembled monolayer by synchrotron radiation based XPS and NEXAFS N2 - An ethynylterpyridine was 'clicked' to an azide-terminated self-assembled monolayer on gold and characterized by synchrotron radiation based surface analysis as NEXAFS and XPS. The detection of azide and terpyridine signatures confirmed a partial click reaction at room temperature. The absence of the azides after reaction at 50 °C indicates an almost complete conversion. For the latter case successful Pd(II) coordination has been proven. The Au–S interface of the SAMs has been characterized by S 1s and S 2p XPS. KW - Synchrotron radiation XPS KW - NEXAFS spectroscopy KW - Surface click chemistry KW - Self-assembled monolayer KW - HAXPES KW - XANES PY - 2012 DO - https://doi.org/10.1016/j.elspec.2012.02.004 SN - 0368-2048 SN - 1873-2526 VL - 185 IS - 3-4 SP - 85 EP - 89 PB - Elsevier CY - Amsterdam AN - OPUS4-25596 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Darlatt, Erik T1 - The Coordination of Palladium(II)-ions changes the preferential orientation of pyridyl terminated self-assembled monolayer molecules - A NEXAFS study T2 - Joint BER II and BESSY II User Meeting 2011 CY - Berlin, Germany DA - 2011-12-01 PY - 2011 AN - OPUS4-24984 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -