Article
Polymer Science
Bhausaheb S. Rajput, Aaron Forman, Matthew W. Halloran, Thien An Phung Hai, Gordon B. Scofield, Michael D. Burkart
Summary: The utilization of bio-based materials for polymer production is challenging due to the availability and production costs of raw materials. The development of a phosgene-free flow chemistry method allows for the safe preparation of renewable diisocyanates, expanding their potential for various applications.
Article
Polymer Science
Xiang-Zhao Wang, Dong-Mei Xie, Xiao-Li Zhao, Yi-Dong Li, Jian-Bing Zeng
Summary: This study developed sustainable and reprocessable poly(urethane urea) covalent adaptable networks (CANs) by incorporating reversible piperazine-urea bonds (PaUBs) into castor oil-derived polyurethanes (CPUs). The CANs showed variable tensile behavior, excellent malleability, stable reprocessability, and multiple recyclability.
Article
Chemistry, Multidisciplinary
A. Khatun, A. Yadav, S. Zhang, S. Saha
Summary: By in-situ oxidative polymerization of preloaded redox-active monomers, the intrinsically insulating MOF has been transformed into electrically conducting MOF superset of conducting-polymer composites, which could be potentially applied in various porous MOFs to achieve engineered conductivity properties.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Polymer Science
Ranganath Wahalathantrige Don, Timothy J. Dowell, Briana L. Simms, Davita L. Watkins, David O. Wipf, Colleen N. Scott
Summary: In this study, a new polymer containing the rhodamine core, polyrhodamine (PRho), was synthesized and its optical and electrochemical properties were determined. The polymer is soluble in polar solvents, with repeat units existing in various forms depending on the pH of the media, affecting its photophysical properties. It exhibits electrochemical reversibility, stability up to 1000 cycles, and impressive conductivity in the semiconductor range when treated with 20% HCl.
Article
Polymer Science
Asif Raza, Amara Nasir, Mehwish Tahir, Shaista Taimur, Tariq Yasin, Muhammad Nadeem
Summary: Polyaniline grafted conducting nanohybrids were successfully synthesized by emulsion graft polymerization, with sepiolite as an ideal substrate showing excellent thermal stability and electrical conductivity. These nanohybrids exhibited outstanding EMI shielding effectiveness in the X-band frequency range.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Apoorv Saraswat, Sunil Kumar
Summary: This study focuses on functionalizing polyaniline through organic electrochemistry, by blending it with functional segments of other monomers. Functionalized polyaniline has shown potential in various applications such as chemical sensors and rechargeable batteries. Electrochemical tools play a crucial role in modifying and analyzing the electrochemical properties of polyaniline.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Electrochemistry
Elena Villani, Naoki Shida, Shinsuke Inagi
Summary: In this study, electrochemiluminescence (ECL) was successfully generated from entirely pure conducting polymer films in alkaline aqueous solution, using PEDOT and PPy films prepared by constant current electrolysis as bipolar electrodes. ECL intensity profiles showed gradient emission on both materials, with different light-emitting regions. Imaging analysis allowed evaluation of ECL behavior of both CPs as a function of applied voltage and conductivity, showing potential applications in ECL and bipolar electrochemistry fields.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Audrey Magnin, Lisa Entzmann, Alfred Bazin, Eric Pollet, Luc Averous
Summary: Polyurethane waste recycling is challenging, but a green recycling pathway was proposed in this study through enzyme depolymerization and organometallic-catalyzed synthesis of second-generation polymers.
Review
Polymer Science
Robert H. Aguirresarobe, Sil Nevejans, Bernd Reck, Lourdes Irusta, Haritz Sardon, Jose M. Asua, Nicholas Ballard
Summary: The development of self-healing materials with polymer networks containing dynamic bonds in polymers, particularly polyurethanes, has shown promise. The rheological properties and types of dynamic bonds in polyurethanes affect their healing capabilities, while characterization techniques and commercial applications present challenges for widespread use of healable polyurethanes.
PROGRESS IN POLYMER SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Huan Wang, Rikard Emanuelsson, Christoffer Karlsson, Patric Jannasch, Maria Stromme, Martin Sjodin
Summary: Rechargeable batteries utilizing redox-active organic compounds are being seen as a promising energy storage technology for the future. By functionalizing redox-active groups onto conducting polymers to create conducting redox polymers (CRPs), the low conductivity and dissolution issues of redox-active compounds can be effectively addressed. Through innovative techniques such as postdeposition polymerization, high-performance CRPs have been developed and optimized to achieve theoretical capacities, resulting in the creation of an efficient all-organic proton battery with impressive capacity retention.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Yupeng Chen, Zhongpeng Zhu, Xiangyu Jiang, Lei Jiang
Summary: This study presents a strategy for constructing free-standing 3D microcavity-patterned conducting polymer films on superhydrophobic substrates, investigating the effects of various factors on the construction process and achieving easy-peeling and nondestructive transfer properties.
Article
Chemistry, Multidisciplinary
Kaitlin R. Albanese, Parker T. Morris, Javier Read de Alaniz, Christopher M. Bates, Craig J. Hawker
Summary: This study presents the synthesis and characterization of statistical and block copolymers containing alpha-lipoic acid (LA) using reversible addition-fragmentation chain-transfer (RAFT) polymerization. The controlled copolymerization of LA and vinyl monomers allows for the synthesis of copolymers with predictable molecular weights and low molar-mass dispersities. The presence of lipoic acid diads in the resulting copolymers, which include disulfide bonds, enables efficient degradation when exposed to mild reducing agents.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Applied
Adrian Perez, Emily Kynaston, Christopher Lindsay, Nicholas Ballard
Summary: This study investigates the influence of alkali soluble resins (ASRs) on the mechanical properties of latex films. It is found that the composition of the copolymer phase has little effect on the Young's modulus, while the high Tg ASR phase plays a key role. Increasing the Tg of the copolymer phase leads to higher elongation break and tougher materials. Polar additives in coatings formulations selectively plasticize the polar ASR phase, resulting in a significant decrease in mechanical performance.
PROGRESS IN ORGANIC COATINGS
(2022)
Review
Chemistry, Physical
Michael Alowakennu, Ahmed Olalekan Omoniyi, Onome Ejeromedoghene, Yakubu Adekunle Alli, Ephraim Akor, Mary Otuosorochukwu Nnyia
Summary: Leveraging the unique properties of conjugated and conducting polymers, their use in light-induced processes has expanded. These polymers possess low-cost, chemical stability, and tunability through association with semiconductor materials. The review highlights the recent exploration of these polymers for photo-driven polymerization and various other photo-induced processes, emphasizing the structure-property correlation and mechanisms associated with these applications. It is crucial for understanding and enhancing their photo-functionality for large-scale use.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Polymer Science
Niklas Warlin, Erik Nilsson, Zengwei Guo, Smita Mankar, Nitin G. Valsange, Nicola Rehnberg, Stefan Lundmark, Patric Jannasch, Baozhong Zhang
Summary: A thermoplastic poly(cycloacetal-urethane) was successfully prepared by copolymerizing a rigid diol with potentially bio-based polytetrahydrofuran, resulting in high thermal stability and tunable glass transition temperatures. The polymer showed a relatively high pyrolysis char residue, indicating potential flame resistance, and could be melt-spun into homogeneous fibers with ease for further hydrolysis under acidic conditions.
Article
Chemistry, Multidisciplinary
Sailin Liu, Jitraporn (Pimm) Vongsvivut, Yanyan Wang, Ruizhi Zhang, Fuhua Yang, Shilin Zhang, Kenneth Davey, Jianfeng Mao, Zaiping Guo
Summary: To stabilize the zinc anode in zinc metal batteries, researchers have developed a controlled electrolytic method using a high dipole moment solvent dimethyl methylphosphonate (DMMP) to create a monolithic solid electrolyte interphase (SEI). This DMMP-based electrolyte generates a homogeneous and robust phosphate SEI (Zn-3(PO4)(2) and ZnP2O6). With the protection provided by this in situ monolithic SEI, the zinc electrode exhibits long-term cycling performance and high Coulombic efficiency in both zinc|zinc and zinc|copper cells. The use of a DMMP-H2O hybrid electrolyte in a full V2O5|zinc battery also results in high capacity retention following a large number of cycles.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Optics
Meguya Ryu, Molong Han, Lina Grineviciute, Jingwen Hu, Tania Moein, Reo Honda, Tomas Katkus, Mark J. Tobin, Jitraporn Vongsvivut, Tomas Tolenis, Yoshiaki Nishijima, Soon Hock Ng, Saulius Juodkazis, Junko Morikawa
Summary: The birefringence analysis of SiO2 films deposited at a glancing angle of 70° on resist pillar arrays and nanopatterned SiO2 substrates is carried out using spectral and color imaging modes. The films can be distinguished based on retardance and birefringence using RGB numerical analysis. By inserting a λ/2 waveplate and rotating the birefringent sample, the range of chromaticity xy-coordinates is increased, facilitating a better determination of birefringence.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Jaworski C. C. Capricho, Tzu-Ying Liao, Boon Xian Chai, Ahmed Al-Qatatsheh, Jitraporn (Pimm) Vongsvivut, Peter Kingshott, Saulius Juodkazis, Bronwyn Louise Fox, Nishar Hameed
Summary: This study demonstrates the potential of macroradical epoxies as surface coating materials, with the use of magnets during polymerization. The magnetically oriented and stable radicals in the polymer backbone render the coatings antimicrobial.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Applied
Anita P. Pax, Lydia Ong, Randolph A. Pax, Jitraporn Vongsvivut, Mark J. Tobin, Sandra E. Kentish, Sally L. Gras
Summary: This study finds that industrial freezing and tempering can preserve the protein network structure and functionality of cheese, and the quality of frozen cheese can be optimized through tempering time. Additionally, it provides insights into the heat transfer mechanism during the industrial freezing and tempering of cheese.
Article
Instruments & Instrumentation
Palalle G. Tharushi Perera, Zoltan Vilagosh, Denver Linklater, The Hong Phong Nguyen, Dominique Appadoo, Jitraporn Vongsvivut, Mark Tobin, Chaitali Dekiwadia, Croft G. Rodney, Elena P. Ivanova
Summary: The study found that the permeability of cell membranes can be changed by the uptake of nanospheres through photon radiation, but the cellular localization of the nanospheres remains unclear. The fate of silica core-shell gold nanospheres inside pheochromocytoma cells after photon radiation exposure was investigated. The nanospheres were found to be present in the cytoplasm or membrane, as single nanospheres or in clusters, with some being sequestered in vacuoles. This cellular uptake of nanospheres could have various applications in biomedical fields such as regenerative medicine, vaccines, cancer therapy, gene and drug delivery.
JOURNAL OF SYNCHROTRON RADIATION
(2023)
Article
Materials Science, Multidisciplinary
Ahmed Al-Qatatsheh, Jitraporn Vongsvivut, Saulius Juodkazis, Nisa V. Salim, Nishar Hameed
Summary: The use of a coordinated silver (I) complex based on solvate ionic liquid in epoxy resins enables unprecedented electrical and thermomechanical properties. The aligned molecular structure achieved through electric field treatment results in high electrical conductivity, excellent energy storage properties, and rapid curing behavior. Quantum mechanics and synchrotron beamline techniques are utilized to optimize and investigate the properties of the system, paving the way for the next generation of thermoset polymers with multifunctional properties.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Applied
Woojeong Kim, Yong Wang, Jitraporn Vongsvivut, Qianyu Ye, Cordelia Selomulya
Summary: This study aims to investigate the stability of spray dried β-carotene microcapsules by analyzing their surface composition using synchrotron-Fourier transform infrared (FTIR) microspectroscopy. The results showed that enzymatic cross-linking and polysaccharide addition improved the stability and encapsulation efficiency of the microcapsules. The cross-linked pea/whey protein blends-maltodextrin complex exhibited the highest encapsulation efficiency after 8 weeks of storage.
Article
Food Science & Technology
Yanyan Lao, Qianyu Ye, Yong Wang, Jitraporn Vongsvivut, Cordelia Selomulya
Summary: Roasting at 150 degrees C for shorter durations (10 and 20 min) positively affected the solubility and emulsion ability of pea protein concentrates and isolates, while longer duration (30 min) decreased the extraction efficiency. Pre-roasting also altered the structure and functional properties of pea proteins, increasing the emulsion ability index but decreasing the emulsion stability index.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Biochemistry & Molecular Biology
Pavel Seredin, Dmitry Goloshchapov, Vladimir Kashkarov, Anatoly Lukin, Yaroslav Peshkov, Ivan Ippolitov, Yuri Ippolitov, Tatiana Litvinova, Jitraporn Vongsvivut, Boknam Chae, Raul O. Freitas
Summary: This study utilizes infrared spectral analysis of protein secondary structure in dental biofilms to predict cariogenic status of the oral cavity. The study also found that the application of a medicinal agent, known as a modulator, showed strong sensitivity to the spectral markers. This research provides the foundation for infrared spectral diagnosis of changes in the oral microbiome due to tooth decay and for the selection of optimal therapeutic treatments based on microbiome-directed prevention measures.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Subham Ranjan, Meguya Ryu, Ryota Morioka, Shuji Kamegaki, Soon Hock Ng, Daniel Smith, Jitraporn Vongsvivut, Mark J. Tobin, Saulius Juodkazis, Junko Morikawa, Satoshi Takamizawa
Summary: A unique scissor-like two-directional ferroelastic deformation was achieved in organic crystals, shedding light on the understanding of multidirectional deformations in organic compounds. The study also revealed a correlation between the anisotropic structural arrangement and the difference in thermal diffusivity and mechanical behavior.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Tuyet Pham, Tien Thanh Nguyen, Ngoc Huu Nguyen, Andrew Hayles, Wenshao Li, Duy Quang Pham, Chung Kim Nguyen, Trung Nguyen, Jitraporn Vongsvivut, Neethu Ninan, Ylias Sabri, Wei Zhang, Krasimir Vasilev, Vi Khanh Truong
Summary: This study presents a novel sustainable technology, using argon atmospheric plasma jet, to transform microalgae into bioactive coatings with excellent antibacterial activity and biological compatibility. This technology has the potential to combat wound infections and advance wound care research.
Article
Materials Science, Multidisciplinary
Shuji Kamegaki, Daniel Smith, Meguya Ryu, Soon Hock Ng, Hsin-Hui Huang, Pegah Maasoumi, Jitraporn Vongsvivut, Daniel Moraru, Tomas Katkus, Saulius Juodkazis, Junko Morikawa
Summary: A four-polarisation camera was used to map the absorbance of olivine micro-grains before and after high-temperature annealing. It was found that high-temperature annealing caused magnetization of olivine xenoliths. Different operating modes of the polariscope were used to validate the three-point fit method for analyzing the birefringence and absorbance of the samples in transmission and reflection modes.
Article
Chemistry, Analytical
Thulya Chakkumpulakkal Puthan Veettil, Diana Alves, Jitraporn Vongsvivut, Rosemary L. Sparrow, Bayden R. Wood, Gil Garnier
Summary: Oxidative treatment of RBCs prior to freeze-drying stabilizes the cells for storage at room temperature. Synchrotron-based FTIR microspectroscopy was used to analyze single RBCs and compare lipid and protein spectral data before and after oxidation and freeze-drying. The analysis showed that oxidized and freeze-dried RBCs have different spectral profiles compared to untreated RBCs, indicating changes in lipid peroxidation, stiffness of the membrane, and protein secondary structure. Freeze-drying did not introduce additional changes. This study highlights the potential of freeze-dried RBCs as a stable source for blood serology testing and demonstrates the power of synchrotron FTIR microspectroscopic live-cell analysis.
Article
Chemistry, Multidisciplinary
Soon Hock Ng, Vijayakumar Anand, Molong Han, Daniel Smith, Jovan Maksimovic, Tomas Katkus, Annaleise Klein, Keith Bambery, Mark J. Tobin, Jitraporn Vongsvivut, Saulius Juodkazis
Summary: The FTIRm system of the Australian Synchrotron has a unique optical configuration and uses a Schwarzschild objective to focus the beam onto the sample for image scanning. In this study, the Lucy-Richardson-Rosen algorithm (LRRA) was applied for the first time in the online FTIRm system to improve image reconstruction. This new technique called coded aperture scanning holography was demonstrated with various samples for image recovery and 3D imaging applications.
APPLIED SCIENCES-BASEL
(2023)
Article
Biotechnology & Applied Microbiology
Andrew Hayles, Richard Bright, Ngoc Huu Nguyen, Vi Khanh Truong, Jonathan Wood, Dennis Palms, Jitraporn Vongsvivut, Dan Barker, Krasimir Vasilev
Summary: This study demonstrates the enhanced susceptibility of pathogenic bacteria to antibiotics by modifying the surface of implantable biomaterials with sharp nanospikes. The presence of nanospikes rejuvenates the activity of antibiotics, resulting in increased bacterial cell death. Differential gene expression and biochemical analysis provide evidence of the mechanism behind the modification of cell surface charge.
NPJ BIOFILMS AND MICROBIOMES
(2023)
