TY - GEN A1 - Grönke, Martin A1 - Arrozi, Ubed S. F. A1 - Bronkalla, Nadine A1 - Schmidt, Peer A1 - Valldor, Martin A1 - Oswald, Steffen A1 - Woodcock, Thomas G. A1 - Eckert, Victoria A1 - Hao, Qi A1 - Plüschke, Laura A1 - Lederer, Albena A1 - Nielsch, Kornelius A1 - Büchner, Bernd A1 - Kaskel, Stefan A1 - Hampel, Silke T1 - Layered α-TiCl₃: Microsheets on YSZ Substrates for Ethylene Polymerization with Enhanced Activity T2 - Chemistry of Materials N2 - The transition metal halide α-titanium(III) chloride (α-TiCl₃) is a layered two-dimensional compound and a well-established Ziegler–Natta catalyst for the polymerization of ethylene. A new synthesis technique is used to obtain thin sheets of α-TiCl₃ that show exceptional physical properties in contrast to their bulk counterparts, due to an enlarged surface-to-volume ratio. Chemical vapor transport (CVT) of α-titanium(III) chloride directly on substrates results in microsheets that exhibit an improved catalytic effect. For rational planning of synthesis conditions, thermodynamic simulations of occurring gas-phase equilibria were performed. Based on these calculation results, crystal growth was achieved by adding GaCl₃via pure short term CVT in a temperature gradient of 700–600 K on yttrium-stabilized zirconia (YSZ) substrates. Phase pure, as-grown, single crystal sheets with high crystallinity and a thickness of around 4 μm were obtained. These thin sheets of α-TiCl₃ on YSZ substrates were implemented as catalysts for the ethylene polymerization reaction. A significant improvement of catalytic activity of 16% was achieved, probably due to an increased surface-to-volume ratio. As a highlight, the as-grown microsheets were exfoliated subsequently to a thickness lower than 200 nm and an even higher catalytic activity of up to 24% was confirmed experimentally due to delamination effects. This is the first time that an improved catalytic effect of α-TiCl₃ is observed as a result of downscaling from bulk to microsheets by CVT. KW - Crystal growth KW - Chemical vapor transport KW - Thermodynamic modeling KW - 2D layered compounds KW - Halides KW - Nanocrystals (1) Y1 - 2019 UR - https://pubs.acs.org/doi/10.1021/acs.chemmater.9b01818 U6 - https://doi.org/10.1021/acs.chemmater.9b01818 VL - 31 IS - 14 SP - 5305 EP - 5313 ER - TY - GEN A1 - Hall, Braeden A1 - Schmidt, Kathleen A1 - Wagge, Jordan A1 - Lewis, Savannah C. A1 - Weissgerber, Sophia C. A1 - Kiunke, Felix A1 - Pfuhl, Gerit A1 - Stieger, Stefan A1 - Tran, Ulrich S. A1 - Barzykowski, Krystian A1 - Bogatyreva, Natalia A1 - Kowal, Marta A1 - Massar, KarlIJn A1 - Pernerstofer, Felizitas A1 - Sorokowski, Piotr A1 - Voracek, Martin A1 - Chartier, Christopher R. A1 - Brandt, Mark J. A1 - Grahe, Jon E. A1 - Özdoğru, Asil A. A1 - Andreychik, Michael R. A1 - Chen, Sau-Chin A1 - Evans, Thomas R. A1 - Hautekiet, Caro A1 - IJzerman, Hans A1 - Kačmár, Pavol A1 - Krafnick, Anthony J. A1 - Musser, Erica D. A1 - Vergauwe, Evie A1 - Werner, Kaitlyn M. A1 - Aczel, Balazs A1 - Arriaga, Patrícia A1 - Batres, Carlota A1 - Beaudry, Jennifer L. A1 - Cova, Florian A1 - Ďurbisová, Simona A1 - Cramblet Alvarez, Leslie D. A1 - Feldman, Gilad A1 - Godbersen, Hendrik A1 - Gottfried, Jaroslav A1 - Haeffel, Gerald J. A1 - Hartanto, Andree A1 - Isloi, Chris A1 - McFall, Joseph P. A1 - Milyavskaya, Marina A1 - Moreau, David A1 - Nosáľová, Ester A1 - Papaioannou, Kostas A1 - Ruiz-Fernandez, Susana A1 - Schrötter, Jana A1 - Storage, Daniel A1 - Vezirian, Kevin A1 - Volz, Leonhard A1 - Weisberg, Yanna J. A1 - Xiao, Qinyu A1 - Awlia, Dana A1 - Branit, Hannah W. A1 - Dunn, Megan R. A1 - Groyecka-Bernard, Agata A1 - Haneda, Ricky A1 - Kielinska, Julita A1 - Kolle, Caroline A1 - Lubomski, Paweł A1 - Miller, Alexys M. A1 - Mækelæ, Martin J. A1 - Pantazi, Mytro A1 - Ribeiro, Rafael R. A1 - Ross, Robert M. A1 - Sorokowska, Agnieszka A1 - Aberson, Christopher L. A1 - Vassiliou, Xanthippi Alexi A1 - Baker, Bradley J. A1 - Bognar, Miklos A1 - Cong, Chin Wen A1 - Danvers, Alex F. A1 - Davis, William E. A1 - Dranseika, Vilius A1 - Dumbravă, Andrei A1 - Farmer, Harry A1 - Field, Andy P. A1 - Forscher, Patrick S. A1 - Graton, Aurélien A1 - Hajdu, Nandor A1 - Howlett, Peter A. A1 - Kabut, Radosław A1 - Larsen, Emmett M. A1 - Lee, Sean T. H. A1 - Legate, Nicole A1 - Levitan, Carmel A. A1 - Levy, Neil A1 - Lu, Jackson G. A1 - Misiak, Michał A1 - Morariu, Roxana E. A1 - Novak, Jennifer A1 - Pronizius, Ekaterina A1 - Prusova, Irina A1 - Rathnayake, Athulya S. A1 - Romanova, Marina O. A1 - Röer, Jan P. A1 - Sampaio, Waldir M. A1 - Schild, Christoph A1 - Schulte-Mecklenbeck, Michael A1 - Stephen, Ian D. A1 - Szecsi, Peter A1 - Takacs, Elizabeth A1 - Teeter, Julia N. A1 - Thiele-Evans, Elian H. A1 - Valeiro-Paterlini, Julia A1 - Vilares, Iris A1 - Villafana, Louise A1 - Wang, Ke A1 - Wu, Raymond A1 - Álvarez-Solas, Sara A1 - Moshontz, Hannah A1 - Buchanan, Erin M. T1 - Registered Replication Report: A Large Multilab Cross-Cultural Conceptual Replication of Turri et al. (2015) T2 - Advances in Methods and Practices in Psychological Science Y1 - 2024 U6 - https://doi.org/10.1177/25152459241267902 SN - 2515-2459 VL - 7 IS - 4 SP - 1 EP - 38 PB - SAGE Publications ER - TY - JOUR A1 - Gracia, F. A1 - Martin-Concepcion, A. I. A1 - Barranco, A. A1 - Holgado, J. P. A1 - Espinos, J. P. A1 - Yubero, F. A1 - Batchelor, David R. A1 - Schmeißer, Dieter A1 - Gonzalez-Elipe, A. R. T1 - XAS investigation of texture in TiO2 thin films prepared by IBICVD Y1 - 2002 ER - TY - CHAP A1 - Lips, Klaus A1 - Schulze, Tim F. A1 - Starr, David E. A1 - Bär, Marcus A1 - Wilks, Regan G. A1 - Fenske, F. A1 - Ruske, Florian A1 - Reiche, Martin A1 - Krol, Roel van de A1 - Reichardt, Gerd A1 - Schäfers, Franz A1 - Hendel, Stefan A1 - Follath, Rolf A1 - Bahrdt, Johannes A1 - Peredkov, Sergey A1 - DeBeer, Serena A1 - Hävecker, Michael A1 - Knop-Gericke, Axel A1 - Rau, Björn A1 - Kaufmann, Christian A1 - Schlatmann, Rutger A1 - Schlögl, Robert A1 - Rech, Bernd A1 - Raoux, Simone T1 - EMIL: The Energy Materials In-situ Laboratory Berlin – A novel characterization facility for photovoltaic and energy materials T2 - 31st European Photovoltaic Solar Energy Conference and Exhibition, proceedings of the international conference held in Hamburg, Germany, 14 -18 September 2015 Y1 - 2015 SN - 3-936338-39-6 U6 - https://doi.org/10.4229/EUPVSEC20152015-1AO.2.1 SP - 25 EP - 28 PB - WIP CY - München ER - TY - JOUR A1 - Vyvenko, Oleg F. A1 - Krüger, O. A1 - Kittler, Martin T1 - Depth Profiling of the Recombination Activity of Defects Measured by Temperature-dependent Cross-sectional EBIC Y1 - 2001 ER - TY - CHAP A1 - Vyvenko, Oleg F. A1 - Krüger, O. A1 - Kittler, Martin T1 - Temperature-dependent Cross-sectional EBIC Study of Hydrogen Passivation of Defects in mc-Si Y1 - 2001 ER - TY - JOUR A1 - Kittler, Martin A1 - Yu, Xuegong A1 - Vyvenko, Oleg F. A1 - Birkholz, Mario A1 - Seifert, Winfried A1 - Reiche, Manfred A1 - Wilhelm, T. A1 - Arguirov, Tzanimir V. A1 - Wolff, A. A1 - Fritzsche, W. A1 - Seibt, M. T1 - Self-organized pattern formation of biomolecules at Si surfaces: Intended application of a dislocation network Y1 - 2006 ER - TY - CHAP A1 - Drechsler, Martin A1 - Johst, Karin A1 - Wätzold, Frank A1 - Shogren, Jason F. T1 - An agglomeration payment for cost-effective biodiversity conservation in spatially structured landscapes Y1 - 2007 PB - Leipzig : UFZ ER - TY - JOUR A1 - Kittler, Martin A1 - Seifert, Winfried A1 - Yu, Xuegong A1 - Jia, G. A1 - Vyvenko, Oleg F. A1 - Mtchedlidze, T. A1 - Reiche, Manfred A1 - Sha, J. A1 - Yang, D. A1 - Arguirov, Tzanimir V. T1 - Silicon naostructures for IR light emitters JF - Materials Sience and Engineering C Y1 - 2007 SN - 1873-0191 VL - 27 IS - 5-8 SP - 1252 EP - 1259 ER - TY - GEN A1 - Kittler, Martin A1 - Yu, Xuegong A1 - Mtchedlidze, T. A1 - Arguirov, Tzanimir V. A1 - Vyvenko, Oleg F. A1 - Seifert, Winfried A1 - Reiche, Manfred A1 - Wilhelm, T. A1 - Seibt, M. A1 - Voss, O. A1 - Wolff, A. A1 - Fritzsche, W. T1 - Regular dislocation networks in silicon as a tool for nanostructures devices used in optics, biology and electronics Y1 - 2007 ER -