Article
Polymer Science
Emma H. Yee, Seunghyeon Kim, Hadley D. Sikes
Summary: The translation discusses the use of oxygen-tolerant radical polymerization in biosensors and the assessment of its reaction mechanism via experimental validation and modeling. By lowering oxygen exposure and increasing eosin photoinitiator concentration, polymer formation can be amplified in droplets for diagnostic assays.
Article
Multidisciplinary Sciences
Suranjana V. Mayani, Sandip P. Bhatt, Vishal J. Mayani, Gaurav Sanghvi
Summary: Graphene oxide (GO) was synthesized and characterized, and a composite material, Strontium Ferrite Graphene Composite (SF@GOC), was successfully fabricated. SF@GOC demonstrated excellent degrading activity for water pollutant dyes and showed antimicrobial properties. Furthermore, SF@GOC has potential applications in composite materials, solar energy, heterogeneous catalysis, and biomedical fields.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Hongna Zhang, Tianying Liu, Nicholas Dulock, Benjamin P. Williams, Yuanxing Wang, Boqiang Chen, Haden Wikar, David Z. Wang, Gary W. Brudvig, Dunwei Wang, Matthias M. Waegele
Summary: Heterogeneous water oxidation catalysis is crucial for renewable energy technologies. Previous studies have shown that reaction mechanisms are influenced by hole density at the active sites, but it was difficult to differentiate between explanations due to different catalyst materials. This comparison study of heterogenized dinuclear Ir catalysts on different supports reveals that the supporting substrate plays a critical role in determining the turnover of active sites, especially at high temperatures.
Article
Chemistry, Multidisciplinary
Yue Luo, Guorui Chang, Li Huang, Leilei Zhang, Jiaqi Cui, Xiaping Zhu, Shuxia Xu
Summary: The covalent immobilization of Eosin Y on graphene oxide resulted in a GO/EY composite with enhanced visible-light-driven photocatalytic activity for degrading CEC antibiotics. The modification of GO by EY as a sensitizer improved visible light absorption, leading to increased degradation efficiency of CEC.
Article
Biochemistry & Molecular Biology
Julia Polozhentseva, Maria Novozhilova, Mikhail Karushev
Summary: This study investigates an uncharacterized electrochemically active polymer of a Salen-type ligand H-2(3-MeOSalen) through various techniques. The effect of the central metal atom on the structure and charge transport properties of the polymer films is elucidated by comparing it with the polymer of a Salen-type nickel complex. It is found that the mechanism of charge transfer in the polymeric ligand is markedly different from the corresponding polymeric nickel complex.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Xiaochen Sun, Xin Zhang, Hongdong Li, Zheng Cui, Xiaoli Zhai, Nan Gao, Junsong Liu
Summary: Spontaneous growth of nanostructures in ambient environment using hydrothermally synthesized ZnO nanorods loaded with DNDs was demonstrated, leading to the formation of ZnCO3/ZnO concentric core-shell structures in a CO2 rich environment. The process leveraged the catalytic, reducibility, and porous structure of DNDs, providing a strategy for fabrication of novel nanostructures and potential for capturing and decomposing CO2 for carbon neutrality.
APPLIED SURFACE SCIENCE
(2022)
Article
Environmental Sciences
P. Dhakal, M. S. Coyne, D. H. McNear, O. O. Wendroth, M. M. Vandiviere, E. M. D'Angelo, C. J. Matocha
Summary: Chemodenitrification, the abiotic reduction of nitrite by iron (II), is an important process in nitrogen cycling due to its source of nitrous oxide production. This study investigated the reactivity of nitrite with goethite and Fe(II)-treated goethite under anoxic conditions. The results showed that nitrite removal by goethite was faster at pH 5.5 and involved a combination of sorption and reduction processes when high aqueous Fe(II) was present. The formation of a surface complex resembling protonated nitrite was observed with implications for nitrogen cycling and release of atmospheric pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Multidisciplinary
Maya Kumari, Sudip Kumar Bera, Svenja Blickle, Wolfgang Kaim, Goutam Kumar Lahiri
Summary: The dinuclear complexes of Epindolidione with [RuX2] have similar structures and electrochemical properties, suitable for molecular electronics applications, and capable of multiple electron transfers.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Nils Rotthowe, Michael Linseis, Lars Vogelsang, Nicole Orth, Ivana Ivanovic-Burmazovic, Rainer F. Winter
Summary: Careful optimization of reaction conditions allowed access to the particularly small tetraruthenium macrocycle (Ru2Ph)-Ru-2-Croc, enabling various oxidized forms to be electrochemically characterized and scrutinized by spectroscopy. The study revealed that the mixed-valent species within the macrocycle are strictly charge-localized on the metal-organic Ru2Ph entities, with minimal involvement of the croconate ligands. The observed redox differences were attributed to electrostatic and inductive effects rather than electronic coupling, making (Ru2Ph)-Ru-2-Croc a true pretender in terms of redox behavior.
Article
Chemistry, Multidisciplinary
Ju Yong Park, Ji Hyeong Ko, Hyun Ju Lee, Jun Hyeong Park, Junseong Lee, Seokpil Sa, Eun Ji Shin, Bun Yeoul Lee
Summary: Grignard reagents with carbanion characteristics are unreactive towards alkyl halides and require a catalyst for coupling reactions. In the large-scale synthesis of a specific compound, CuCN was found to be the most efficient catalyst. The reaction mechanism and intermediate structures were studied, leading to the successful synthesis of the desired compounds and significant cost reduction.
Review
Chemistry, Multidisciplinary
Eszter Fazekas, Phoebe A. Lowy, Maisarah Abdul Rahman, Anna Lykkeberg, Yali Zhou, Raju Chambenahalli, Jennifer A. Garden
Summary: This review focuses on efficient polymerization catalysts based on main group metals such as Group 1, Group 2, Zn, and Group 13. Key mechanisms and catalyst developments, including ligand design, heterometallic cooperativity, bicomponent systems, and selective polymerization conditions, are discussed.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Biochemistry & Molecular Biology
Abdelrahman O. A. Eldenary, H. M. Abd El-Salam, Abeer Enaiet Allah
Summary: Concerns over heavy metals in wastewater and their impact on the environment and human health can be addressed through adsorption technology. This study developed efficient and cost-effective adsorbents, specifically chitosan-grafted polyacrylonitrile/ZnO, for the treatment of water contaminated with heavy metals. Various tests confirmed the morphological and structural properties of the materials, and the adsorption behavior of Fe(II) ions was studied. The adsorption process followed the Langmuir model and pseudo-second-order kinetics, suggesting a monolayer formation of Fe(II) over the adsorbent surface.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Haruko Shibata, Moeko Nakayama, Koto Tagami, Tadashi Kanbara, Tomoko Yajima
Summary: In this study, hydroxylation and hydro-perfluoroalkylation reactions of styrene were successfully achieved using visible light reactions catalyzed by eosin Y. These reactions are heavy-metal free, use water as the hydroxyl or hydrogen source, and employ inexpensive and readily available reagents.
Review
Polymer Science
Przemyslaw Ledwon, Mieczyslaw Lapkowski
Summary: This review article presents various electrochemical and spectroelectrochemical techniques used to study conjugated polymers, providing a perspective on the development of this research area over the past 40 years. It discusses the significant impact of electrochemical and spectroelectrochemical methods in the advancement of organic semiconductors, demonstrating their potential in explaining various phenomena.
Article
Environmental Sciences
Francine Girardello, Camila Custodio Leite, Luciana Bavaresco Touguinha, Mariana Roesch-Ely, Chrys Katielli Hoinacki da Silva, Richard Macedo de Oliveira, Daniel Lazaro Gallindo Borges, Izabel Vianna Villela, Andreia Neves Fernandes, Mirian Salvador, Joao Antonio Pegas Henriques
Summary: This study evaluated the impact of zinc oxide nanoparticles (ZnO-NP) on the redox metabolism and DNA damage in Limnoperna fortunei, finding that ZnO-NP induced oxidative stress in the exposed golden mussels. The golden mussel was able to modulate its own antioxidant defenses in response to oxidative stress and could release Zn2+ into the cellular compartment by hydrolyzing the nanoparticles.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Physics, Applied
Yuki Tezuka, Kazuki Umemoto, Masaki Takeda, Yoshihito Takahashi, Hinako Ebe, Junya Enomoto, Sasiphapa Rodbuntum, Tomohiro Nohara, Daniela Fontecha, Satoshi Asakura, Takayuki Chiba, Madalina Ioana Furis, Tsukasa Yoshida, Hiroshi Uji-i, Akito Masuhara
JAPANESE JOURNAL OF APPLIED PHYSICS
(2020)
Article
Chemistry, Multidisciplinary
Halime Coskun, Abdalaziz Aljabour, Phil de Luna, He Sun, Nobuyuki Nishiumi, Tsukasa Yoshida, Georg Koller, Michael G. Ramsey, Theresia Greunz, David Stifter, Moritz Strobel, Sabine Hild, Achim Walter Hassel, Niyazi Serdar Sariciftci, Edward H. Sargent, Philipp Stadler
ADVANCED MATERIALS
(2020)
Article
Chemistry, Physical
Lina Sun, Kyota Uda, Tsukasa Yoshida, Yoshiyuki Suzuri
Summary: The photochemical conversion of a dry gel coating into a highly compact and transparent thin film of zinc oxide nanocrystals produces color-tunable photoluminescence. The excitation and emission mechanisms of the luminescent ZnO NCs are characterized, and their stability under VUV irradiation is demonstrated. The surface of the ZnO NCs is found to be covered with a luminescent Zn-MEA complex, responsible for the observed variable photoluminescence.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Ken-ichi Nakayama, Tatsuya Okura, Yuki Okuda, Jun Matsui, Akito Masuhara, Tsukasa Yoshida, Matthew Schuette White, Cigdem Yumusak, Phillip Stadler, Markus Scharber, Niyazi Serdar Sariciftci
Summary: Conjugated donor-acceptor molecules with intramolecular charge transfer absorption have been successfully utilized for single-component organic solar cells, resulting in high efficiency and stability. The molecular packing in the film is shown to have a significant impact on the device performance.
Article
Materials Science, Multidisciplinary
T. Nakamura, H. Kudo, Y. Tsuda, Y. Matsushima, T. Yoshida
Summary: The electrodeposition of metal organic framework (MOF) thin films bridged by terephthalic acid (TPA) allowed the successful conversion to a Co-doped ZnO thin film. The addition of TPA was crucial in blending Zn2+ and Co2+ ions, with a maximum achievable doping concentration of about 8%.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
H. Yamaguchi, E. Saito, K. Uno, R. Yamakado, S. Okada, T. Yoshida
Summary: Combining mesoporous metal oxide electrodes with adsorbed organic chromophores can result in fast, stable, reversible electrochromism, showing a two-step color change process of white-purple-yellow-yellow and yellow-purple-yellow. CE2V exhibited higher adsorption concentration compared to CEMV, with better retention of electrochromic performance after 500 redox cycles.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Tatsuki Sasaki, Lina Sun, Yu Kurosawa, Tatsuhiro Takahashi, Yoshiyuki Suzuri
Summary: This study investigated the VUV-induced PHPS densification process by examining the effects of Si-N bond number, PHPS film composition, and free volume. It was found that VUV irradiation caused rapid hydrogen release and film densification through the formation of Si-N bonds. The densification of nanometer-thick PHPS films was a relatively slow process characterized by a reduction in free volume in the Si-N network.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jun Matsui, Kazuki Ebata, Masaki Takeda, Kim Ngan Hua, Hiroshi Katagiri, Ken-ichi Nakayama, Akito Masuhara, Cigdem Yumusak, Philipp Stadler, Markus Clark Sharber, Matthew Schuette White, Niyazi Serdar Sariciftci, Tsukasa Yoshida, Madalina Furis
Summary: The study showed that millimeter-long organic fiber arrays can be prepared using the evaporation-induced self-assembled method, with individual fibers being HB194 single crystals. By eliminating defects and structural disorder, it was possible to achieve longer-lived intramolecular charge transfer (CT) excitonic states.
ISRAEL JOURNAL OF CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
David Allemeier, Benjamin Isenhart, Ekraj Dahal, Yuki Tsuda, Tsukasa Yoshida, Matthew S. White
Summary: The authors demonstrate tuning of the photonic band gap in vertically-stacked OLED microcavities through intelligent device design, resulting in an electrically-driven metal-dielectric photonic crystal emitter. Interaction with adjacent cavities causes states of individual microcavities to split into bands of hybridized photonic energy states.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Keisuke Ichijo, Sayuri Kimura, Tsukasa Yoshida, Ryohei Yamakado, Shuji Okada
Summary: In this study, cyanine cations with various counter anions were prepared as examples of ionic materials constructed using charged pi-conjugated systems. The optical properties and packing structures of these ion pairs were investigated through UV/vis absorption, fluorescence spectroscopy, and single-crystal X-ray analysis. It was found that the location and delocalization of the anions relative to the cations, as well as the stack formation of cyanine cations, depend on the size and structure of the anions.
Article
Chemistry, Multidisciplinary
Tatsuki Sasaki, Lina Sun, Yu Kurosawa, Tatsuhiro Takahashi, Yoshiyuki Suzuri
Summary: This study reports a solution-processed gas barrier technology that can protect electronic devices from water vapor damage. The gas barrier has high performance and sustainability advantages, making it a promising new technology.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Physical
Andreas Ringleb, Raffael Ruess, Nico Hofeditz, Wolfram Heimbrodt, Tsukasa Yoshida, Derck Schlettwein
Summary: The research found that V-OC of DSSCs can be significantly increased by Mg-doping, and the Mg concentration in MZO affects the transport and recombination of electrons in MZO, which in turn influences the performance of the cells. Nanoparticles with a pure ZnO core and an MZO shell structure can help reduce the impact of increased transport resistance in MZO and utilize the improved V-OC.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Sheng-Joue Young, Yi-Hsing Liu, M. D. Nahin Islam Shiblee, Kumkum Ahmed, Lin-Tzu Lai, Larry Nagahara, Thomas Thundat, Tsukasa Yoshida, Sandeep Arya, Hidemitsu Furukawa, Ajit Khosla
ACS APPLIED ELECTRONIC MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Sota Kodama, Shun Aoyama, Yuka Tanaka, Keisuke Ichijo, Tsukasa Yoshida, Ryohei Yamakado, Shuji Okada
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2020)