TY - GEN A1 - Reddy, K. M. A1 - Kudalkar, V. N. A1 - Madhusudan, C. P. A1 - Wiggenhauser, Herbert T1 - A NDT in civil engineering software for multiple testing methods KW - Beton KW - Software KW - Zerstörungsfreie Prüfung PY - 2008 SN - 978-1-57117-180-1 SP - 295 EP - 302 CY - Oakland, CA, USA AN - OPUS4-34611 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Ravi, J. A1 - Feiler, Torvid A1 - Mondal, A. A1 - Michalchuk, Adam A1 - Reddy, C. M. A1 - Bhattacharya, Biswajit A1 - Emmerling, Franziska A1 - Chandrasekar, R. T1 - Plastically bendable organic crystals for monolithic and hybrid micro-optical circuits N2 - Fluorescent plastically bendable crystals are a promising alternative to silicon-based materials for fabricating photonic integrated circuits, owing to their optical attributes and mechanical compliance. Mechanically bendable plastic organic crystals are rare. Their formation requires anisotropic intermolecular interactions and slip planes in the crystal lattice. This work presents three fluorescent plastically bendable crystalline materials namely, 2-((E)-(6-methylpyridin-2-ylimino)methyl)-4-chlorophenol (SB1), 2-((E)-(6-methylpyridin-2-ylimino)methyl)-4-bromophenol (SB2), and 2-((E)-(6-Bromopyridin-2-ylimino)methyl)-4-bromophenol (SB3) molecules. The crystal plasticity in response to mechanical stress facilitates the fabrication of various monolithic and hybrid (with a tip-to-tip coupling) photonic circuits using mechanical micromanipulation with an atomic force microscope cantilever tip. These plastically bendable crystals act as active (self-guiding of fluorescence) and passive waveguides both in straight and extremely bent (U-, J-, and O-shaped) geometries. These microcircuits use active and passive waveguiding principles and reabsorbance and energy-transfer mechanisms for their operation, allowing input-selective and direction-specific signal transduction. KW - Flexible crystals KW - Flexible waveguide PY - 2022 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-565302 DO - https://doi.org/10.1002/adom.202201518 SN - 2195-1071 SP - 1 EP - 10 PB - Wiley-VCH CY - Weinheim AN - OPUS4-56530 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Möhlmann, Lennart A1 - Chang, G.-H. A1 - Reddy, G. M. A1 - Lee, C.-J. A1 - Lin, W. T1 - Organocatalytic Enantioselective Synthesis of Tetrahydrofluoren-9- ones via Vinylogous Michael Addition/Henry Reaction Cascade of 1,3-Indandione-Derived Pronucleophiles N2 - An unprecedented organocatalytic enantioselective vinylogous Michael addition/Henry cyclization cascade is presented for the synthesis of highly substituted tetrahydrofluoren-9-ones 3 employing novel 1,3-indandionederived pronucleophiles 1a−g and nitroalkenes 2. Following a very simple protocol, a wide range of products were obtained in good to excellent yields and with excellent enantioinduction (43−98% yield, up to 98% ee). The reaction proceeded with excellent diastereocontrol despite the simultaneous generation of four stereogenic centers. Surprisingly, when 2-(1-phenylethylidene)-1H-indandione (1h) was used as a pronucleophile, no cyclization was observed, and only Michael addition adducts 4a−x were furnished in very good yields and excellent enantioselectivities. KW - square amide KW - organocatalysis KW - cascade reaction KW - enatioselective PY - 2016 DO - https://doi.org/10.1021/acs.orglett.5b03663 SP - 688 EP - 691 AN - OPUS4-36952 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -