Article
Polymer Science
Yoshihisa Tokushita, Shogo Furuya, Shotaro Nobe, Kazuhiro Nakabayashi, Sadaki Samitsu, Hideharu Mori
Summary: Selenium-containing polymers with high refractive indices were prepared by radical polymerization, showing potential for improving refractive indices of (meth)acrylate-based copolymers. By adjusting the content of methyl methacrylate, the refractive indices of copolymers could be controlled, with higher transparency achieved in copolymers with more MMA content. The polymers exhibited good transmittances around 400 nm wavelength.
Article
Polymer Science
Yuanming Deng, Cuiting Li, Jiangtao Fan, Xie Guo
Summary: A novel open-to-air photo RAFT polymerization method was reported, in which a series of acrylate and methacrylate monomers were polymerized by a matching chain transfer agent irradiated by far-red light in DMSO. The polymerization initiation was achieved by the generation of hydroxyl radical (& BULL;OH) from methylene blue (MB) sensitized decomposition of H2O2 via photo-Fenton like-reaction. The living/control characteristic of the polymerization was evidenced by kinetic study, end-group fidelity characterization, and successful chain extension, while the temporary controllability was proved by light on/off switch experiment.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Xue Zhao, Manussada Ratanasak, Jun-ya Hasegawa, Kazumasa Kon, Kazuaki Ishihara
Summary: This study developed magnesium(ii) and sodium(i) complexes derived from BHT-H and PBTP-H-2 as catalysts for the transesterification of MA and MMA. The Mg(PBTP) and Na-2(PBTP) catalysts were found to be 41 and 81 times more effective than Mg(BHT)(2) and Na(BHT), respectively. These catalysts showed high efficiency across a range of alcohols.
Article
Polymer Science
Rachel L. Atkinson, Olivia R. Monaghan, Matthew T. Elsmore, Paul D. Topham, Daniel T. W. Toolan, Matthew J. Derry, Vincenzo Taresco, Robert A. Stockman, Davide S. A. De Focatiis, Derek J. Irvine, Steven M. Howdle
Summary: Terpenes are considered ideal candidates for sustainable polymer feedstocks due to their natural abundance and availability from existing waste streams. By using RAFT control, well-defined polymers and precise di- and multiblock copolymer architectures can be synthesized. A wide range of T-g values are observed for terpene (meth)acrylate homopolymers, which can be utilized to create renewably-sourced hard-soft block copolymers.
Article
Polymer Science
Alexander Schweigerdt, Daniel D. Stoebener, Andreas Schaefer, Selin Kara, Marie Weinhart
Summary: In this study, the thermoresponsive properties of two novel glycerol ether-based poly(meth)acrylates with beta-hydroxy-functional side chains were comprehensively investigated. The phase transition behavior and its dependence on intrinsic and extrinsic factors were analyzed in detail. The results provide a basis for the rational design of polymers with adjustable hydration and demonstrate the potential of these polymers as postfunctionalizable thermoresponsive polymer platforms.
Article
Polymer Science
Julien Alex, Jens Ulbrich, Miguel Rosales-Guzman, Christine Weber, Ulrich S. Schubert, Carlos Guerrero-Sanchez
Summary: The study focused on the kinetics of RAFT copolymerization of PFPMA and MMA, showing that copolymer molar mass control was achieved when initial PFPMA feed was below 40%, and MMA radicals exhibited a preference for adding PFPMA monomers. Furthermore, kinetic investigations of RAFT homopolymerization of PFPA revealed an induction period and poor molar mass control in polar solvents, with better control observed in 1,4-dioxane using the same CTA. Polymerizations with a trithiocarbonate CTA were less affected by solvent polarity, achieving good control on molar mass in acetonitrile and 1,4-dioxane even at high monomer conversion.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Nicole Ziegenbalg, Franka Gruschwitz, Torben Adermann, Lukas Mayr, Svetlana Guriyanova, Johannes C. Brendel
Summary: In contrast to commonly used activated monomers, vinyl thioethers possess unique characteristics and can be used as a reactive building block for the preparation of functional polymers. Recent progress in the direct vinylation of mercaptans has made vinyl mercaptoethanol an attractive monomer for future materials design.
Article
Chemistry, Multidisciplinary
Hugo Fouilloux, Wei Qiang, Carine Robert, Vincent Placet, Christophe M. Thomas
Summary: The study introduces a one-pot catalytic system that can efficiently transform renewable materials into monomers suitable for polymer production, enabling the synthesis of a new library of unique poly(meth)acrylates under mild conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Polymer Science
Zhikang Chen, Wuchao Zhao, Conglei Liu, Liuying Jiang, Gang Fu, Yuetao Zhang, Hongping Zhu
Summary: The use of easily synthesized phosphonium ylides as Lewis base in the Lewis pair polymerization of (meth)acrylates has been reported. Among the studied systems, the P-ylide-2/AlMe(BHT)(2) system is the best for living/controlled polymerizations.
Article
Polymer Science
Piotr Cieciorski, Pawel W. Majewski, Elzbieta Megiel
Summary: A series of photoresponsive poly(meth)acrylates containing azobenzene groups were synthesized, showing reversible structural transformation under light illumination and high potential for energy storage applications. The enthalpy determined from DSC was relatively high, indicating liquid-crystalline behavior of the materials.
Article
Polymer Science
Yoshihiko Kimura, Takaya Terashima
Summary: Cation template-assisted RAFT cyclopolymerization can efficiently produce thermoresponsive pseudo-crown ether polymers, including large in-chain ring cyclopolymers and amphiphilic random cyclocopolymers with hydrophilic hexa(ethylene glycol) rings and hydrophobic groups.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Polymer Science
Tomohiro Shirai, Hiroki Fukumoto, Yasunori Kanno, Toshio Kubota, Tomohiro Agou
Summary: Novel polyacrylates with vinylene-bridged fluoroalkyl side chains were successfully synthesized to prevent the formation of bioaccumulative polyfluorinated compounds. These polymers exhibited excellent surface properties, making them promising alternatives to conventional analogues.
Article
Polymer Science
Chris Gaebert, David Hicke, Julia Bahnemann, Leonhard Mayrhofer, Matthias Hartlieb, Stefan Reinicke
Summary: A light-assisted RAFT copolymerization protocol is developed to synthesize HEA/SPA copolymers with increased SPA contents. Visible light irradiation prevents the isomerization of SPI into MC form, which can hinder the polymerization process by abstracting a hydrogen atom from an active radical via its phenolic oxygen.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Polymer Science
Zhengyuan Zhang, Yu Liu, Xiaochuan Shui, Youqing Yu, Chunyan Zheng, Yuechuan Wang
Summary: This study found that acetylenyl acrylates with di-substitutes on propargyl can produce linear and soluble polymers without branching and gelation. Laser flash photolysis experiments revealed that the reactivities of vinyl and acetylene groups differ by less than 20 times, leading to the formation of lactone units on polymer chains.
Article
Polymer Science
Shusuke Okamoto, Toyofumi Shinozuka, Takeshi Endo
Summary: The study reports the synthesis of acrylates with a significant volume expansion upon radical photo-polymerization. Among them, the acrylate containing benzyl bisurethane moieties exhibits the largest volume expansion and helps to restrict volume change when copolymerized with a diacrylate showing volume shrinkage. Additionally, a correlation is revealed between volume change behavior and polymer structure through the radical photo-polymerization of the isocyanurate core-based diacrylate with benzyl bisurethane moieties under various concentration conditions.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
D. Chomicki, O. Kharchenko, L. Skowronski, J. Kowalonek, V. Smokal, O. Krupka, B. Derkowska-Zielinska
Summary: The optical and photochromic properties, as well as surface quality, of thin films of methacrylic copolymers containing 2-methylquinoline and quinoline azo-dyes were presented. The presence of a methyl substituent in the 2nd position of the quinoline moiety was found to affect the optical properties and photoisomerization rates of the investigated polymers. The quality of the thin films was examined using Atomic Force Microscopy measurements.
APPLIED NANOSCIENCE
(2022)
Article
Chemistry, Physical
Beata Derkowska-Zielinska, Anna Kaczmarek-Kedziera, Malgorzata Sypniewska, Dariusz Chomicki, Robert Szczesny, Lukasz Skowronski, Viviana Figa, Oksana Krupka
Summary: A series of new materials based on methacrylic polymers modified with 1-(4-nitrophenyl)piperazine side chains were obtained and characterized for potential applications in optoelectronic devices. Structural modifications led to hypsochromic shift of the absorption spectrum and lowest refractive index values were found for the polymer with distant ethylene group in the side-chains and increased separation between piperazine units. Optical energy band gaps of investigated piperazine-containing polymers ranged from 2.73 to 2.81 eV, showing promising potential for advances in photovoltaics, field effect transistors, or electrochromic devices.
JOURNAL OF PHYSICAL CHEMISTRY B
(2021)
Article
Physics, Multidisciplinary
P. Sedzicki, E. Nowak, M. Szybowicz, B. Derkowska-Zielinska
Summary: This article investigates the photoluminescence of ZnO sol-gel films coated on glass substrates using a spincoating method and annealed at different temperatures. The heat treatment aims to remove organic waste and promote polycrystalline layer formation. The temperature dependence of photoluminescence is studied, and Gaussian deconvolution is used to analyze optically active defects in the material. It is demonstrated that luminescence properties can be controlled by adjusting the annealing conditions.
ACTA PHYSICA POLONICA A
(2022)
Article
Chemistry, Analytical
Lukasz Peplowski, Robert Szczesny, Lukasz Skowronski, Anastasiia Krupka, Vitaliy Smokal, Beata Derkowska-Zielinska
Summary: This study presents the use of FTIR and Raman spectroscopies to characterize the infrared properties of methacrylic polymers containing heterocyclic azo dyes thin films, and compares the experimental results with theoretical predictions. The results show that the type of substitution in the azobenzene moiety strongly affects the infrared properties of the polymers.
VIBRATIONAL SPECTROSCOPY
(2022)
Article
Chemistry, Physical
Lucia Mydlova, Bouchta Sahraoui, Karolina Waszkowska, Houda El Karout, Malgorzata Makowska-Janusik, Anna Migalska-Zalas
Summary: Theoretical and experimental investigations were conducted on the optical properties of composite materials embedded in a polymer matrix, and the results were confirmed by calculations and simulations.
Article
Biochemistry & Molecular Biology
Pawel Popielarski, Lidia Mosinska, Lukasz Skowronski, Robert Szczesny, Viviana Figa, Mieczyslaw Naparty, Beata Derkowska-Zielinska
Summary: This study investigates the effect of annealing on the polycrystalline alpha and beta phases of copper and nickel phthalocyanines. It is found that annealing significantly influences the optical properties of the vapor-deposited layers, and changing the annealing temperature can adjust their optoelectronic parameters for different optoelectronic devices.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Beata Derkowska-Zielinska, Anna Kozanecka-Szmigiel, Dariusz Chomicki, Vitaliy Smokal, Yutaka Kawabe, Oksana Krupka
Summary: The photoinduced birefringence behavior of host-guest systems based on heterocyclic thiazole-azo dyes with different substituents dispersed into a PMMA matrix was investigated. It was found that similar levels of photoinduced birefringence were observed under different excitation wavelengths, except for the system containing a 2-methyl-5-benzothiazolyl substituent, which exhibited the highest birefringence value regardless of the excitation wavelength.
Article
Chemistry, Physical
Karolina Waszkowska, Anastasiia Krupka, Vitaliy Smokal, Oksana Kharchenko, Anna Migalska-Zalas, Mykhaylo Frasinyuk, Robert Wielgosz, Anatoliy Andrushchak, Bouchta Sahraoui
Summary: In this study, new photonics architectures and aurone-based methacrylic polymers were designed and synthesized for their optical and nonlinear optical properties. The impact of substitution on phenyl ring and dipole moment of chromophore on the nonlinear optical properties of the investigated polymers was determined through theoretical calculations and experimental measurements.
Article
Polymer Science
Malgorzata Sypniewska, Anna Kaczmarek-Kedziera, Alexandra Apostoluk, Vitaliy Smokal, Anastasiia Krupka, Robert Szczesny, Beata Derkowska-Zielinska
Summary: The aim of this study was to investigate the influence of various StQ substituents on the luminescence, structural, and optical properties of StQ-containing copolymers. The study found that the change in the nature of the substituent affects the emission band wavelength and can cause a transition in fluorescence color. FTIR and Raman spectroscopies were used to measure the structural properties, while absorbance measurements provided the optical parameters. Computational DFT analysis supported the application of these systems in optoelectronic devices.
Article
Nanoscience & Nanotechnology
M. Sypniewska, R. Szczesny, L. Skowronski, P. Kamedulski, E. Gondek, A. Apostoluk, B. Derkowska-Zielinska
Summary: This report presents the influence of polymer matrix on the morphological and optical properties of thin films containing zinc oxide and tris(8-hydroxyquinolinato)aluminium. The study found that adding polymer to the tris(8-hydroxyquinolinato)aluminium layer causes a blueshift in absorption and results in a change in the size of zinc oxide agglomerates depending on the polymer used.
APPLIED NANOSCIENCE
(2022)
Article
Chemistry, Physical
Dorota Korte, Egon Pavlica, Domen Klancar, Gvido Bratina, Michal Pawlak, Ewa Gondek, Peng Song, Junyan Liu, Beata Derkowska-Zielinska
Summary: The influence of P3HT:PCBM ratio on the thermal and transport properties of solar cells was studied using photothermal beam deflection spectrometry. Different P3HT:PCBM ratios were deposited on PEDOT:PSS/ITO layers in organic bulk-heterojunction solar cells. The results showed that the energy band gap and thermal diffusivity were dependent on the P3HT:PCBM ratio, while the charge carrier lifetime was determined by the PCBM concentration. The study also found that the carrier lifetime exhibited a similar dependence on the PCBM concentration as the open-circuit voltage of the solar cells under AM1.5 illumination. Therefore, photothermal beam deflection spectrometry is a suitable method for characterizing organic solar cells.
Article
Biochemistry & Molecular Biology
Malgorzata Sypniewska, Monika Pokladko-Kowar, Ewa Gondek, Aleksandra Apostoluk, Piotr Kamedulski, Vitaliy Smokal, Peng Song, Junyan Liu, Robert Szczesny, Beata Derkowska-Zielinska
Summary: For the first time, OLEDs based on bis(8-hydroxyquinoline) zinc with a styryl group dispersed in poly(N-vinylcarbazole) matrix were fabricated, showing strong electroluminescence in the yellow region. Among them, the OLED with the ZnStq_OCH3:PVK layer exhibited a narrow electroluminescence spectrum, high color purity, and potential for use in ultra-high-resolution displays with reduced power consumption.
Article
Chemistry, Multidisciplinary
Yaroslav Shchur, Andrii Bendak, Guillermo Beltramo, Anatoliy S. Andrushchak, Svetlana Vitusevich, Denys Pustovyj, Bouchta Sahraoui, Yurii Slyvka, Andriy V. Kityk
Summary: The synthesis of nanosized organic benzil crystals within the mesoporous SiO2 host matrix was studied using various techniques. It was found that the structural properties of the benzil nanocrystals were preserved when embedded into SiO2 host membranes. The confinement had minimal impact on the lattice vibrational properties.
