Article
Chemistry, Multidisciplinary
Victor G. Desyatkin, William B. Martin, Ali E. Aliev, Nathaniel E. Chapman, Alexandre F. Fonseca, Douglas S. Galvao, Ericka Roy Miller, Kevin H. Stone, Zhong Wang, Dante Zakhidov, F. Ted Limpoco, Sarah R. Almahdali, Shane M. Parker, Ray H. Baughman, Valentin O. Rodionov
Summary: In this study, multilayer gamma-Graphyne was synthesized through crystallization-assisted irreversible cross-coupling polymerization and comprehensively characterized. Experimental results showed that gamma-Graphyne is a 0.48 eV band gap semiconductor with a specific crystal structure. The reported methodology is scalable and applicable to other allotropes of the graphyne family.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Polymer Science
Mohamed Gamal Mohamed, Yu-Shan Chou, Po-Chih Yang, Shiao-Wei Kuo
Summary: In this study, a conjugated polyfluorene (PFDPP) containing two different diketo-pyrrolopyrrole (DPP) derivatives was successfully synthesized through Suzuki polymerization. The chemical sensing and optical properties of PFDPP were investigated, showing high sensitivity to Fe3+ and F- ions, and complete emission quenching at higher pH values due to protonation of DPP structures. The results suggest that PFDPP could be a promising material for chemosensory and environmental applications.
Article
Polymer Science
Ryota Iwamori, Ryota Sato, Junpei Kuwabara, Takaki Kanbara
Summary: Nonstoichiometric polyaddition was achieved through Co-catalyzed hydroarylation of diyne monomers with excess 1-(2-pyrimidinyl)pyrrole. The 2-pyrimidinyl substituent acted as a directing group, facilitating intramolecular catalyst transfer and yielding poly(arylenevinylene)s with alkyne terminals and high molecular weight.
Article
Polymer Science
Brian P. Jacobs, Johnathan N. Brantley
Summary: Borylated motifs have great potential for functional soft materials by facilitating various reaction pathways. The study introduces a novel approach for Boron-based polymerization to access diverse borylated materials with potential for further chemical modification under mild conditions.
Article
Nanoscience & Nanotechnology
Matthias Mueller, Manfred Drusgala, Roland C. Fischer, Ana Torvisco, Wolfgang Kern, Michael Haas, Christine Bandl
Summary: Since the past few decades, surface-initiated photopolymerization techniques have gained increasing interest. Coupling of photoinitiators to surfaces and particles has become an important research topic in material and surface sciences. Covalent coupling of photoinitiators and subsequent photopolymerizations provide a wide range of surface properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Polymer Science
Alexander Kleine, Ulrich S. Schubert, Michael Jaeger
Summary: This study investigates the preparation of poly(N-alkyl-3,6-carbazole)s with defined alpha-/omega-end groups using a commercial Buchwald-type pre-catalyst. It is found that an excess of monofunctional aryl halide favors the Suzuki-Miyaura catalyst-transfer polymerization (SCTP) mechanism, resulting in heterotelechelic polymers with defined molar masses, narrow dispersities, and high chemical yields.
Article
Polymer Science
Claudia Carlucci, Daniele Conelli, Omar Hassan Omar, Nicola Margiotta, Roberto Grisorio, Gian Paolo Suranna
Summary: Direct arylation polymerization (DArP) is an eco-friendly alternative to conventional polycondensation methods for obtaining specific conjugated polymers. This study investigated the use of anisole as a solvent for the preparation of poly(9,9-dioctylfluorene-2,2'-bithiophene) under undried and aerobic conditions. The results showed successful polymerization without the activation of radical pathways or structural defects.
Review
Chemistry, Multidisciplinary
Austin M. Evans, Michael J. Strauss, Amanda R. Corcos, Zoheb Hirani, Woojung Ji, Leslie S. Hamachi, Xavier Aguilar-Enriquez, Anton D. Chavez, Brian J. Smith, William R. Dichtel
Summary: Synthetic chemists have developed various methods to synthesize molecules, polymers, and networks, but have long lacked the ability to prepare two-dimensional polymers from designed monomers. Recent advances in polymerization strategies and characterization methods have enabled the realization of covalently linked macromolecular sheets. Three predominant 2D polymerization strategies have emerged, producing 2DPs as either monolayers or multilayer assemblies.
Review
Polymer Science
Yi-Shen Huang, Dula Daksa Ejeta, Shiao-Wei Kuo, Yasuyuki Nakamura, Chih-Feng Huang
Summary: This article introduces the application of controlled/living polymerization techniques in polymer synthesis, with a focus on the research of combination methods and the synthesis of innovative materials. It is found that by using various polymerization reactions and reaction combinations, polymer materials with special structures and properties can be synthesized.
Article
Chemistry, Multidisciplinary
Hajime Sugita, Takeru Kamigawara, Sou Miyazaki, Ryusuke Shimada, Takayoshi Katoh, Yoshihiro Ohta, Tsutomu Yokozawa
Summary: This study investigates intramolecular catalyst transfer on benzoheterodiazoles in Suzuki-Miyaura coupling reactions and polymerization reactions. It is found that the Pd catalyst undergoes intramolecular transfer on dibromobenzotriazole, whereas intermolecular transfer occurs in part in the case of dibromobenzoxazole and is predominant for dibromobenzothiadiazole. In the polymerization reactions, different benzoheterodiazoles react with phenylenediboronates to produce high-molecular-weight polymer and cyclic polymer, with dibromobenzoxazole resulting in a moderate-molecular-weight polymer with bromine at both ends.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Sarah M. Zeitler, Progyateg Chakma, Matthew R. Golder
Summary: Mechanically-induced redox processes offer a promising alternative to conventional thermal and photochemical synthetic methods and provide exquisite control over the synthesis of high molecular weight polymers.
Review
Polymer Science
Ning Zhu, Xin Hu, Zheng Fang, Kai Guo
Summary: Chemoselective polymerizations present a significant challenge in advanced polymer precision synthesis, with issues such as ill-defined products and low efficiency in traditional methods. Significant progress has been made in chemoselective polymerizations through the development of novel catalysis and microflow technology.
PROGRESS IN POLYMER SCIENCE
(2021)
Article
Energy & Fuels
Laurel Simon Lobo, Kazuya Matsumoto, Mitsutoshi Jikei, Shun Ikeda, Hirokazu Okawa
Summary: Hyperbranched polyphenylene (HBP) shows potential as a bipolar electrode for Li-ion batteries due to advantages such as fast ion transportation, high specific surface area, and improved conductivity when combined with multiwalled carbon nanotubes (MWCNT). The branching structure, surface area, and electronic conductivity from MWCNT contribute to good cyclic stability and high specific capacity in the HBP/MWCNT composite anode electrode. Ex situ analysis using Fourier transform infrared spectroscopy reveals a lithium storage mechanism in HBP electrodes, indicating potential for high-performing organic electrodes for future metal-ion batteries.
Article
Energy & Fuels
Laurel Simon Lobo, Kazuya Matsumoto, Mitsutoshi Jikei, Shun Ikeda, Hirokazu Okawa
Summary: Polymeric electrodes, especially hyperbranched polyphenylene, show great potential as Li-ion battery electrodes due to their tunable structures and high specific surface area. The incorporation of multiwalled carbon nanotubes further improves electronic conductivity and overall performance, showing promising results for future metal-ion batteries.
Review
Polymer Science
Olivia Z. Durham, Devon A. Shipp
Summary: Thiol-X polymerizations have been widely used in the production of polymer colloidal particles, offering high yields, rapid synthesis, and compatibility with various monomer species. These reactions have been applied in heterogeneous polymerizations using different methods, showcasing their adaptability and practicality. The step-growth mechanism in thiol-X polymerizations allows for straightforward polymer functionalization and the examples provided demonstrate their potential in creating new technologies.
Article
Materials Science, Multidisciplinary
Velram Balaji Mohan, Krishnan Jayaraman, Manfred Stamm, Debes Bhattacharyya
Article
Chemistry, Multidisciplinary
Ivan Raguzin, Soumyadip Choudhury, Frank Simon, Manfred Stamm, Leonid Ionov
ADVANCED MATERIALS INTERFACES
(2017)
Article
Chemistry, Physical
Kamakshi, Rajesh Kumar, Vibhav K. Saraswat, Manoj Kumar, Kamlendra Awasthi, Manfred Stamm
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2017)
Article
Chemistry, Physical
Aruni Shajkumar, Bhanu Nandan, Sunita Sanwaria, Victoria Albrecht, Marcin Libera, Myong-Hoon Lee, Gudrun Auffermann, Manfred Stamm, Andriy Horechyy
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2017)
Article
Nanoscience & Nanotechnology
Lazaros Tzounis, Shreya Herlekar, Antonios Tzounis, Nikolaos D. Charisiou, Maria Goula, Manfred Stamm
JOURNAL OF NANOMATERIALS
(2017)
Article
Chemistry, Physical
Anne Freitag, Manfred Stamm, Leonid Ionov
JOURNAL OF POWER SOURCES
(2017)
Article
Polymer Science
Yevhen Karpov, Tim Erdmann, Manfred Stamm, Uwe Lappan, Olga Guskova, Mikhail Malanin, Ivan Raguzin, Tetyana Beryozkina, Vasiliy Bakulev, Florian Guenther, Sibylle Gemming, Gotthard Seifert, Mike Hambsch, Stefan Mannsfeld, Brigitte Voit, Anton Kiriy
Article
Chemistry, Multidisciplinary
Johanna Zessin, Franziska Fischer, Andreas Heerwig, Alfred Kick, Susanne Boye, Manfred Stamm, Anton Kiriy, Michael Mertig
Article
Chemistry, Physical
S. Choudhury, M. Azizi, I. Raguzin, M. Goebel, S. Michel, F. Simon, A. Willomitzer, V. Mechtcherine, M. Stamm, L. Ionov
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2017)
Article
Polymer Science
Soumyadip Choudhury, Tuhin Saha, Kinsuk Naskar, Manfred Stamm, Gert Heinrich, Amit Das
Article
Chemistry, Physical
Stefan Adam, Meike Koenig, Keith Brian Rodenhausen, Klaus-Jochen Eichhorn, Ulrich Oertel, Mathias Schubert, Manfred Stamm, Petra Uhlmann
APPLIED SURFACE SCIENCE
(2017)
Article
Chemistry, Physical
Anne Freitag, Ulrike Langklotz, Axel Rost, Manfred Stamm, Leonid Ionov
ENERGY STORAGE MATERIALS
(2017)
Article
Chemistry, Multidisciplinary
Evmorfia Psarra, Ulla Koenig, Martin Mueller, Eva Bittrich, Klaus-Jochen Eichhorn, Petra B. Welzel, Manfred Stamm, Petra Uhlmann
Article
Materials Science, Composites
Marcos Felisberto, Lazaros Tzounis, Leandro Sacco, Manfred Stamm, Roberto Candal, Gerardo H. Rubiolo, Silvia Goyanes
COMPOSITES COMMUNICATIONS
(2017)
Article
Chemistry, Multidisciplinary
Bijay P. Tripathi, Nidhi C. Dubey, Riyas Subair, Soumydip Choudhury, Manfred Stamm
