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Combination of Knoevenagel Polycondensation and Water-Assisted Dynamic Michael-Addition-Elimination for the Synthesis of Vinylene-Linked 2D Covalent Organic Frameworks

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Angewandte Chemie 2022年第21期134卷

作者： Dr. Shunqi Xu Dr. Zhongquan Liao Dr. Arezoo Dianat Dr. Sang-Wook Park Dr. Matthew A. Addicoat Dr. Yubin Fu Dominik L. Pastoetter Filippo Giovanni Fabozzi Dr. Yannan Liu Prof. Gianaurelio Cuniberti Dr. Marcus Richter Prof. Stefan Hecht Prof. Xinliang Feng Chair of Molecular Functional Materials Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry Technische Universität Dresden Mommsenstrasse 4 01069 Dresden Germany Department of Synthetic Materials and Functional Devices Max-Planck Institute of Microstructure Physics 06120 Halle Germany Fraunhofer Institute for Ceramic Technologies and Systems (IKTS) 01109 Dresden Germany Chair of Material Science and Nanotechnology Faculty of Mechanical Science and Engineering Technische Universität Dresden Hallwachstraße 3 01069 Dresden Germany Leibniz-Institute for Polymer Research Dresden e.V. (IPF) 01069 Dresden Germany School of Science and Technology Nottingham Trent University Clifton Lane Nottingham NG11 8NS UK DWI-Leibniz Institute for Interactive Materials & Institute of Technical and Macromolecular Chemistry RWTH Aachen University 52074 Aachen Germany

Vinylene-linked two-dimensional conjugated covalent organic frameworks (V-2D-COFs), belonging to the class of two-dimensional conjugated polymers, have attracted increasing attention due to their extended π-conjugation over the 2D backbones associated with high chemical stability. The Knoevenagel polycondensation has been demonstrated as a robust synthetic method to provide cyano (CN)-substituted V-2D-COFs with unique optoelectronic, magnetic, and redox properties. Despite the successful synthesis, it remains elusive for the relevant polymerization mechanism, which leads to relatively low crystallinity and poor reproducibility. In this work, we demonstrate the novel synthesis of CN-substituted V-2D-COFs via the combination of Knoevenagel polycondensation and water-assisted dynamic Michael-addition-elimination, abbreviated as KMAE polymerization. The existence of C=C bond exchange between two diphenylacrylonitriles ( M1 and M6 ) is firstly confirmed via in situ high-temperature NMR spectroscopy study of model reactions. Notably, the intermediate M4 synthesized via Michael-addition can proceed the Michael-elimination quantitatively, leading to an efficient C=C bond exchange, unambiguously confirming the dynamic nature of Michael-addition-elimination. Furthermore, the addition of water can significantly promote the reaction rate of Michael-addition-elimination for highly efficient C=C bond exchange within 5 mins. As a result, the KMAE polymerization provides a highly efficient strategy for the synthesis of CN-substituted V-2D-COFs with high crystallinity, as demonstrated by four examples of V-2D-COF-TFPB-PDAN, V-2D-COF-TFPT-PDAN, V-2D-COF-TFPB-BDAN, and V-2D-COF-HATN-BDAN, based on the simulated and experimental powder X-ray diffraction (PXRD) patterns as well as N 2 -adsorption–desorption measurements. Moreover, high-resolution transmission electron microscopy (HR-TEM) analysis shows crystalline domain sizes ranging from 20 to 100 nm for the newly synthesized V-2D-COF

关键词： Dynamic Chemistry Knoevenagel Polymerization Two-Dimensional Organic Framework Vinylene-Linked systems

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Frontispiece: Augmenting the Performance of Hydrogenase for Aerobic Photocatalytic Hydrogen Evolution via Solvent Tuning

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Angewandte Chemie International Edition 2023年第22期62卷

作者： Dr. Michael G. Allan Thomas Pichon Dr. Jade A. McCune Dr. Christine Cavazza Dr. Alan Le Goff Dr. Moritz F. Kühnel Department of Chemistry Faculty of Science and Engineering Swansea University Singleton Park Swansea SA2 8PP Wales UK Univ. Grenoble Alpes CEA CNRS IRIG CBM 38000 Grenoble France Melville Laboratory for Polymer Synthesis University of Cambridge Lensfield Road Cambridge CB2 1EW UK University Grenoble Alpes CNRS DCM UMR 5250 F-38000 Grenoble France Dept. Hydrogen Labs and Field Tests Fraunhofer Institute for Wind Energy Systems Am Haupttor BC 4310 06237 Leuna Germany

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The ECFA Early Career Researcher's Panel: composition, structure, and activities, 2021-2022

arXiv

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arXiv 2022年

作者： Geanta, Andrei Alexandru Amendola, Chiara Apolinario, Liliana Arling, Jan-Hendrik Ashkenazi, Adi Augsten, Kamil Bagnaschi, Emanuele Bakos, Evelin Barak, Liron Bastos, Diogo Benato, Giovanni Bilin, Bugra Kraljevic, Neven Blaskovic Brenner, Lydia Brizioli, Francesco Camper, Antoine Camplani, Alessandra Vidal, Xabier Cid Dag, Hüseyin de Almeida Dias, Flavia Degens, Jordy Diociaiuti, Eleonora Dufour, Laurent Dunne, Katherine Erhardt, Filip Ghinescu, Stefan-Alexandru Gouskos, Loukas Herzan, Andrej Hinger, Viktoria Hiti, Bojan Ilg, Armin Irles, Adrián Jarkovská, Kateřina Jovicevic, Jelena Keszeghova, Lucia Kirschenmann, Henning Klaver, Suzanne Konstantinou, Sotiroulla Kuich, Magdalena Kumari, Neelam Gajdošová, Katarína Křížková Lelek, Aleksandra Lorenz, Jeanette Carvalho, Ana Luisa Major, Péter Malczewski, Jakub Mancini, Giada Martikainen, Laura Maurice, Émilie Mee, Seán Milosevic, Vukasin Moravcova, Zuzana Valero, Laura Moreno Moureaux, Louis Mäntysaari, Heikki Nikiforou, Nikiforos Otarid, Younes Pitt, Michael Placinta, Vlad-Mihai Räuber, Géraldine Ripellino, Giulia Roberts, Bryn Šantelj, Luka Schramm, Steven Shopova, Mariana Skovpen, Kirill Smolkovič, Aleks Sokmen, Gamze Sznajder, Pawel Gomez, Lourdes Urda Waldron, Abigail Victoria Williams, Sarah Zaccolo, Valentina Zardoshti, Nima Zeyen, Manuel Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest-Magurele Romania IRFU CEA Université Paris-Saclay Gif-sur-Yvette France Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Deutsches Elektronen-Synchrotron DESY Hamburg Germany Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague Prague Czech Republic CERN Geneva Switzerland Institute of Physics University of Belgrade Belgrade Serbia INFN Laboratori Nazionali del Gran Sasso L'Aquila Italy MAX IV Laboratory Lund University Lund Sweden Nikhef National Institute for Subatomic Physics University of Amsterdam Amsterdam Netherlands INFN Sezione di Perugia Perugia Italy Department of Physics University of Oslo Oslo Norway Niels Bohr Institute University of Copenhagen Copenhagen Denmark Universidade de Santiago de Compostela Santiago de Compostela Spain Department of Physics Bursa Technical University Bursa Turkey INFN Laboratori Nazionali di Frascati Frascati Italy Department of Physics Stockholm University Stockholm Sweden Physics Department Faculty of Science University of Zagreb Zagreb Croatia Slovak Academy of Sciences Bratislava Slovakia Paul Scherrer Institut Villigen Switzerland Department of Experimental Particle Physics Jožef Stefan Institute Department of Physics University of Ljubljana Ljubljana Slovenia Physik-Institut University of Zürich Zürich Switzerland IFIC Universitat de València and CSIC València Spain Faculty of Mathematics and Physics Charles University Prague Czech Republic Faculty of Mathematics Physics and Informatics Comenius University Bratislava Slovakia Department of Physics University of Helsinki Helsinki Finland Nikhef National Institute for Subatomic Physics VU University Amsterdam Amsterdam Netherlands University of Cyprus Nicosia Cyprus University of Warsaw Wa

The European Committee for Future Accelerators (ECFA) Early Career Researcher's (ECR) panel, which represents the interests of the ECR community to ECFA, officially began its activities in January 2021. In the first two years, the panel has defined its own internal structure, responded to ECFA requests for feedback, and launched its own initiatives to better understand and support the diverse interests of early career researchers. This report summarises the panel composition and structure, as well as the different activities the panel has been involved with during the first two years of its existence. © 2022, CC BY.

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Thin Films: Ethanedithiol Treatment of Solution‐Processed ZnO Thin Films: Controlling the Intragap States of Electron Transporting Interlayers for Efficient and Stable Inverted Organic Photovoltaics (Adv. Energy Mater. 5/2015)

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Advanced Energy Materials 2015年第5期5卷

作者： Sai Bai Yizheng Jin Xiaoyong Liang Zhizhen Ye Zhongwei Wu Baoquan Sun Zaifei Ma Zheng Tang Jianpu Wang Uli Würfel Feng Gao Fengling Zhang State Key Laboratory of Silicon Materials Department of Materials Science and Engineering Cyrus Tang Center for Sensor Materials and Application and Center for Chemistry of High‐Performance and Novel Materials Zhejiang University Hangzhou 310027 China Jiangsu Key Laboratory for Carbon‐Based Functional Materials and Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University 199 Ren'ai Road Suzhou 215123 China Department of Physics Chemistry and Biology (IFM) Linköping University SE‐581 83 Linköping Sweden Institute of Advanced Materials Nanjing Tech University Nanjing 210009 China Fraunhofer Institute for Solar Energy Systems ISE Heidenhofstr. 2 79110 Freiburg Germany Materials Research Centre FMF University of Freiburg Stefan‐Meier‐Str. 21 79104 Freiburg Germany

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Thiophenbasierte Polymergerüste ermöglichen zweidimensionale Poly(arylenvinylen)e mit hoher Ladungsträgermobilität

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Angewandte Chemie 2023年第35期135卷

作者： Yamei Liu Heng Zhang Dr. Hongde Yu Dr. Zhongquan Liao Dr. Silvia Paasch Dr. Shunqi Xu Dr. Ruyan Zhao Prof. Eike Brunner Prof. Mischa Bonn Dr. Hai I. Wang Prof. Thomas Heine Dr. Mingchao Wang Prof. Yiyong Mai Prof. Xinliang Feng School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry Technische Universität Dresden Mommsenstrasse 4 01062 Dresden Deutschland Diese Autoren haben zu gleichen Teilen zu der Arbeit beigetragen. Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Deutschland Fraunhofer Institute for Ceramic Technologies and Systems (IKTS) 01109 Dresden Deutschland Helmholtz-Zentrum Dresden-Rossendorf Forschungsstelle Leipzig 04318 Leipzig Deutschland Department of Chemistry Yonsei University Seoul 03722 Korea Max Planck Institute of Microstructure Physics Weinberg 2 06120 Halle Deutschland

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Biomedical image analysis competitions: The state of current participation practice

arXiv

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arXiv 2022年

作者： Eisenmann, Matthias Reinke, Annika Weru, Vivienn Tizabi, Minu Dietlinde Isensee, Fabian Adler, Tim J. Godau, Patrick Cheplygina, Veronika Kozubek, Michal Maier-Hein, Klaus Jäger, Paul F. Kopp-Schneider, Annette Maier-Hein, Lena Ali, Sharib Gupta, Anubha Kybic, Jan Noble, Alison de Solórzano, Carlos Ortiz Pachade, Samiksha Petitjean, Caroline Sage, Daniel Wei, Donglai Wilden, Elizabeth Alapatt, Deepak Andrearczyk, Vincent Baid, Ujjwal Bakas, Spyridon Balu, Niranjan Bano, Sophia Bawa, Vivek Singh Bernal, Jorge Bodenstedt, Sebastian Casella, Alessandro Choi, Jinwook Commowick, Olivier Daum, Marie Depeursinge, Adrien Dorent, Reuben Egger, Jan Eichhorn, Hannah Engelhardt, Sandy Ganz, Melanie Girard, Gabriel Hansen, Lasse Heinrich, Mattias Heller, Nicholas Hering, Alessa Huaulmé, Arnaud Kim, Hyunjeong Li, Hongwei Bran Landman, Bennett Li, Jianning Ma, Jun Martel, Anne Martín-Isla, Carlos Menze, Bjoern Nwoye, Chinedu Innocent Oreiller, Valentin Padoy, Nicolas Pati, Sarthak Payette, Kelly Sudre, Carole van Wijnen, Kimberlin Vardazaryan, Armine Vercauteren, Tom Wagner, Martin Wang, Chuanbo Yap, Moi Hoon Yu, Zeyun Yuan, Chun Zenk, Maximilian Zia, Aneeq Zimmerer, David Bao, Rina Choi, Chanyeol Cohen, Andrew Dzyubachyk, Oleh Galdran, Adrian Gan, Tianyuan Guo, Tianqi Gupta, Pradyumna Haithami, Mahmood Ho, Edward Jang, Ikbeom Li, Zhili Luo, Zhengbo Lux, Filip Makrogiannis, Sokratis Müller, Dominik Oh, Young-Tack Pang, Subeen Pape, Constantin Polat, Gorkem Reed, Charlotte Rosalie Ryu, Kanghyun Scherr, Tim Thambawita, Vajira Wang, Haoyu Wang, Xinliang Xu, Kele Yeh, Hung Yeo, Doyeob Yuan, Yixuan Zeng, Yan Zhao, Xin Abbing, Julian Adam, Jannes Adluru, Nagesh Agethen, Niklas Ahmed, Salman Al Khalil, Yasmina Alenyà, Mireia Alhoniemi, Esa An, Chengyang Arega, Tewodros Weldebirhan Avisdris, Netanell Aydogan, Dogu Baran Bai, Yingbin Calisto, Maria Baldeon Basaran, Berke Doga Beetz, Marcel Bian, Hao Blansit, Kevin Bloch, Louise Bohnsack, Robert Bosticardo, Sara Breen, Jack Brudfors, Mikael Brüngel, Raphael Cabezas, Mariano Cacciola, Alb Heidelberg Division of Intelligent Medical Systems Germany Heidelberg HI Helmholtz Imaging Germany Faculty of Mathematics and Computer Science Heidelberg University Heidelberg Germany Heidelberg Division of Biostatistics Germany Heidelberg Division of Medical Image Computing Germany Heidelberg HI Applied Vision Lab Germany IT University of Copenhagen Copenhagen Denmark Centre for Biomedical Image Analysis Masaryk University Brno Czech Republic Heidelberg Interactive Machine Learning Group Germany Faculty of Mathematics and Computer Science and Medical Faculty Heidelberg University Heidelberg Germany NCT Heidelberg DKFZ University Hospital Heidelberg Germany School of Computing University of Leeds Leeds United Kingdom SBILab Department of ECE IIIT-Delhi India Faculty of Electrical Engineering Czech Technical University Prague Czech Republic Institute of Biomedical Engineering University of Oxford United Kingdom Center for Applied Medical Research Pamplona Spain Shri Guru Gobind Singhji Institute of Engineering and Technology Maharashtra Nanded India Université de Rouen Normandie France Lausanne Switzerland School of Engineering and Applied Science Harvard University United States ICube University of Strasbourg CNRS France Institute of Informatics School of Management HES-SO Valais-Wallis University of Applied Sciences and Arts Western Switzerland Techno-Pôle 3 Sierre3960 Switzerland Department of Nuclear Medicine and Molecular Imaging Lausanne University Hospital Rue du Bugnon 46 LausanneCH-1011 Switzerland University of Pennsylvania PhiladelphiaPA United States Department of Radiology University of Washington United States Wellcome EPSRC Centre for Interventional and Surgical Sciences University College London London United Kingdom Visual Artificial Intelligence Lab Oxford Brookes University Oxford United Kingdom Universitat Autònoma de Barcelona & Computer Vision Center Spain Dresden Fetscherstraße 74 PF 64 Dresden01307 Germany

The number of international benchmarking competitions is steadily increasing in various fields of machine learning (ML) research and practice. So far, however, little is known about the common practice as well as bottlenecks faced by the community in tackling the research questions posed. To shed light on the status quo of algorithm development in the specific field of biomedical imaging analysis, we designed an international survey that was issued to all participants of challenges conducted in conjunction with the IEEE ISBI 2021 and MICCAI 2021 conferences (80 competitions in total). The survey covered participants' expertise and working environments, their chosen strategies, as well as algorithm characteristics. A median of 72% challenge participants took part in the survey. According to our results, knowledge exchange was the primary incentive (70%) for participation, while the reception of prize money played only a minor role (16%). While a median of 80 working hours was spent on method development, a large portion of participants stated that they did not have enough time for method development (32%). 25% perceived the infrastructure to be a bottleneck. Overall, 94% of all solutions were deep learning-based. Of these, 84% were based on standard architectures. 43% of the respondents reported that the data samples (e.g., images) were too large to be processed at once. This was most commonly addressed by patch-based training (69%), downsampling (37%), and solving 3D analysis tasks as a series of 2D tasks. K-fold cross-validation on the training set was performed by only 37% of the participants and only 50% of the participants performed ensembling based on multiple identical models (61%) or heterogeneous models (39%). 48% of the respondents applied postprocessing steps. © 2022, CC BY.

关键词： Benchmarking

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11th German Conference on Chemoinformatics (GCC 2015) Abstracts

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JOURNAL OF CHEMINFORMATICS 2016年第SUPPL 1期8卷 1-27页

作者： [Anonymous] GDCh-CIC Division Associated Board Member Beilstein-Institut zur Förderung der Chemischen Wissenschaften Trakehner Str. 7-9 60487 Frankfurt Germany. ufechner@beilstein-institut.de. Division Medicinal Chemistry Amsterdam Institute for Molecules Medicines and Systems (AIMMS) VU University Amsterdam The Netherlands. Centre for Bioinformatics Uni Hamburg Bundesstr. 43 20146 Hamburg Germany. Sanofi-Aventis Deutschland GmbH 65926 Frankfurt am Main Germany. stefan.guessregen@***. Sanofi-Aventis Deutschland GmbH 65926 Frankfurt am Main Germany. GlaxoSmithKline Stevenage SG1 2NY UK. nicola.j.richmond@***. Discngine Paris 75011 France. Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Germany. marwin.segler@wwu.de. Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Germany. Bundeskriminalamt Wiesbaden Central Analytics II 65173 Wiesbaden Germany. Department of Chemistry and Biochemistry University of California Santa Barbara CA 93111 USA. shea@chem.ucsb.edu. Department of Chemistry and Biochemistry University of California Santa Barbara CA 93111 USA. Chemistry Department Ludwig-Maximilians-Universität München Butenandtstr. 7 81377 Munich Germany. Inorganic Chemistry and Center for Nanointegration University of Duisburg-Essen Essen Germany. CAM-D Technologies Essen Germany. Institute for Bioinformatics and Chemoinformatics Westphalian University of Applied Sciences Recklinghausen Germany. Institute for Bioinformatics and Chemoinformatics Westphalian University of Applied Sciences Recklinghausen Germany. achim.zielesny@w-hs.de. Leiden University Leiden Netherlands. j.fraaije@chem.leidenuniv.nl. Culgi BV Berlin Germany. Physikalische Chemie III TU Dortmund 44227 Dortmund Germany. stefan.kast@tu-dortmund.de. Centre for Molecular Informatics Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW United Kingdom. kcb27@cam.ac.uk. Centre for Molecular Informatics Department of Chemistry

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Eine allgemeine Strategie zur Synthese von nanostrukturierten leitfähigen MOFs aus isolierenden MOF-Vorläufern für Superkondensatoren und chemiresistive Sensoren

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Angewandte Chemie 2023年第3期136卷

作者： Dr. Chuanhui Huang Prof. Weiming Sun Yingxue Jin Dr. Quanquan Guo David Mücke Xingyuan Chu Dr. Zhongquan Liao Dr. Naisa Chandrasekhar Dr. Xing Huang Dr. Yang Lu Dr. Guangbo Chen Dr. Mingchao Wang Dr. Jinxin Liu Dr. Geping Zhang Dr. Minghao Yu Dr. Haoyuan Qi Prof. Dr. Ute Kaiser Prof. Dr. Gang Xu Prof. Dr. Xinliang Feng Prof. Dr. Renhao Dong Center for Advancing Electronics Dresden & Faculty of Chemistry and Food Chemistry Technische Universität Dresden Mommsenstrasse 4 01062 Dresden Deutschland Diese Autoren haben zu gleichen Teilen zu der Arbeit beigetragen. The Department of Basic Chemistry The School of Pharmacy Fujian Medical University Fuzhou Fujian 350108 China State Key Laboratory of Structural Chemistry Fujian Provincial Key Laboratory of Materials and Techniques toward Hydrogen Energy Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China Central Facility for Materials Science Electron Microscopy Universität Ulm 89081 Ulm Deutschland Fraunhofer Institute for Ceramic Technologies and Systems (IKTS) Maria-Reiche-Strasse 2 01109 Dresden Deutschland Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education School of Chemistry and Chemical Engineering Shandong University Jinan 250100 China Department of Synthetic Materials and Functional Devices Max Planck Institute for Microstructure Physics 06120 Halle (Saale) Deutschland

Zweidimensionale konjugierte metallorganische Gerüstverbindungen (2D c-MOFs) entwickeln sich zu einer einzigartigen Unterklasse von geschichteten kristallinen Koordinationspolymeren, die gleichzeitig Porosität und elektrische Leitfähigkeit besitzen und ein breites Anwendungspotenzial in Energiespeicherung und elektronischen Geräten haben. Um die intrinsischen elektronischen Eigenschaften und strukturellen Besonderheiten von 2D c-MOFs optimal nutzen zu können, ist die kontrollierte Synthese von hierarchisch nanostrukturierten 2D c-MOFs mit hoher Kristallinität und maßgeschneiderten Morphologien unerlässlich, was eine große Herausforderung darstellt. In diesem Artikel stellen wir eine Template-Strategie zur Synthese einer Bibliothek von 2D c-MOFs mit kontrollierten Morphologien und Dimensionen über eine Transformation von isolierenden MOFs zu c-MOFs vor. Die daraus resultierenden hierarchisch nanostrukturierten 2D c-MOFs weisen höhere intrinsische elektrische Leitfähigkeiten und größere Oberflächen als die literaturbeschriebenen 2D c-MOFs auf, was für einen verbesserten Zugang zu aktiven Seiten und einen verbesserten Massentransport von Vorteil ist. Als Proof-of-Concept-Anwendungen zeigen die hierarchisch nanostrukturierten 2D c-MOFs eine überlegene Leistung für Anwendungen welche auf ihren elektrischen Eigenschaften basieren (hohle Cu-BHT-Nanowürfel-basierte Superkondensatoren und Cu-HHB Nanoblumen-basierte chemiresistive Gassensoren). Diese erreichen eine Verbesserung der spezifischen Kapazität und der Ansprechintensität von über 225 % bzw. 250 % gegenüber den entsprechenden durch Bulk-Synthese erhaltenen c-MOFs.

关键词： Chemiresistiver Sensor Leitfähige 2D MOFs Hierarchische Nanostrukturen Superkondensator Template Strategie

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The project »Rock-Star«: The evolution of rotary printing for solar cell metallization

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AIP Conference Proceedings 2021年第1期2367卷

作者： Andreas Lorenz M. Klawitter M. Linse S. Tepner J. Röth N. Wirth R. Greutmann M. Lehner A. Senne D. Reukauf M. Drews S. Gombert H. Brocker A. Mette J. Rohde E. Dörsam F. Clement 1Fraunhofer Institute for Solar Energy Systems ISE Heidenhofstraße 2 79110 Freiburg Germany 2ASYS Automatisierungssysteme GmbH Benzstr. 10 89160 Dornstadt Germany 3Gallus Ferd. Rüesch AG Harzbüchelstrasse 34 9016 St. Gallen Switzerland 4Lehner Engineering GmbH Ebnetstrasse 18 9032 Engelburg Switzerland 5ContiTechElastomer-BeschichtungenGmbH BreslauerStr.14 7154 Northeim Germany 6Hanhwa Q Cells GmbH Sonnenallee 17-21 06766 Bitterfeld-Wolfen Germany 7Kurt Zecher GmbH Görlitzer Str. 2 33098 Paderborn Germany 8Technische Universität Darmstadt Magdalenenstraße 2 64289 Darmstadt Germany

Within this work, we provide a comprehensive overview about research activities and current status with respect to rotary printed metallization for silicon solar cells. We will present the major results of the research project »Rock-Star« and previous activities which focused on the metallization of Si solar cells using flexographic printing and rotary screen printing. We demonstrate that the rear side metallization of passivated emitter and rear cells (PERC) can be realized with rotary screen printing on the same quality level as state-of-the-art flatbed screen printing. Furthermore, it is shown that both rotary screen printing and flexographic printing are able to realize the fine line front side metallization. Fine line front side contacts down to approx. 40 µm for rotary screen printing and around 30 µm for flexographic printing are demonstrated. However, further optimization is required to reduce finger width, increase finger height and thus decrease the mean lateral finger resistance. A major result of project »Rock-Star« is the development of an innovative demonstrator platform to enable rotary printed solar cell metallization with high printing speed and low cycle time per wafer. Newly developed transport, alignment and printing concept enables a cycle time of down to 0.45 s/wafer. The concept and features of the demonstrator machine are presented within this paper.

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Polymer Brushes: Polymer Brushes on Hexagonal Boron Nitride (Small 19/2019)

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Small 2019年第19期15卷

作者： Wenbo Sheng Ihsan Amin Christof Neumann Renhao Dong Tao Zhang Erik Wegener Wei-Liang Chen Paul Förster Hai Quang Tran Markus Löffler Andreas Winter Raul D. Rodriguez Ehrenfried Zschech Christopher K. Ober Xinliang Feng Andrey Turchanin Rainer Jordan Chair of Macromolecular Chemistry School of Science Technische Universität Dresden Mommsenstr. 4 01069 Dresden Germany Junior Research Group Biosensing Surfaces Leibniz Insitute for Plasma Science and Technology (INP) Felix-Hausdorff-Str. 2 17489 Greifswald Germany Department of Materials Science and Engineering Cornell University 310 Bard Hall Ithaca NY 14853 USA Institute of Physical Chemistry Friedrich Schiller University Jena Center for Energy and Environmental Chemistry Jena (CEEC Jena) Lessingstr. 10 07743 Jena Germany Chair of Molecular Functional Materials School of Science Technische Universität Dresden Mommsenstr. 4 01069 Dresden Germany Robert Frederick Smith School of Chemical and Biomolecular Engineering Cornell University 120 Olin Hall Ithaca NY 14853 USA Dresden Center for Nanoanalysis Center for Advancing Electronics Dresden (CfAED) Technische Universität Dresden Helmholtzstr. 18 01187 Dresden Germany Research School of Chemistry & Applied Biomedical Sciences Tomsk Polytechnic University 30 Lenin Ave 634050 Tomsk Russia Department Head Microelectronic Materials and Nanoanalysis Fraunhofer Institute for Ceramic Technologies and Systems Maria Reiche Str. 2 01099 Dresden Germany

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