Article
Chemistry, Physical
Tiantian Feng, Daniel Streater, Bing Sun, Korlan Duisenova, Dong Wang, Yi Liu, Jier Huang, Jian Zhang
Summary: In this study, the photophysical properties of three highly crystalline imine-linked 2D COFs were systematically investigated using experimental and computational methods. It was found that the different electron affinities in the materials can influence the excited state, charge transfer direction, and lifetime, thus affecting the performance of the materials. One of the materials exhibited a greater degree of delocalization, resulting in a long-lived charge-separated state.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Guangyang Bao, Wenyuan Yu, Qianqian Fu, Jianping Ge
Summary: This study reports a method of fabricating an electrically responsive photonic crystal (ERPC) in weak polar media. The ERPC shows good performance due to less screening of Coulombic interaction. By using aniline as a weak polar solvent, the ERPC is fabricated without any charge-controlling agent. The resulting SiO2/ANI ERPC exhibits a broad reflection wavelength tuning range (230 nm) and a low working potential (1.4 V), leading to improved stability and reversibility of the electrical tuning.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Han Yu, Jingjing Ren, Ya Xie, Xiaofang Su, Aiping Wang, Likai Yan, Feng Jiang, Yongge Wei
Summary: A new catalytic system using an iron compound as a molecular catalyst in water, with oxygen as the oxidant and KCl as the additive, allows for the high-yield oxidation of various alcohols to carboxylic acids under mild conditions, including active molecules and natural compounds.
Article
Chemistry, Multidisciplinary
Ushnish Chaudhuri, Navab Singh, R. Mahendiran, Adekunle O. Adeyeye
Summary: The nanopatterning of Yttrium Iron Garnets (YIGs) on conventional platforms is challenging, and researchers have proposed a method to indirectly pattern YIG films on a Gadolinium Gallium Garnet (GGG) substrate. They used nanostencil lithography to fabricate exchange-coupled arrays of Py dots on the YIG films, allowing for the transfer of patterned magnetic information. The properties of the YIG/Py dot structure and reference YIG film were characterized using magneto-optic Kerr effect and ferromagnetic resonance spectroscopy. The results demonstrate the potential of using easily patternable magnetic materials for future YIG-based magnonic devices.
Article
Polymer Science
Krisada Auepattana-Aumrung, Treethip Phakkeeree, Daniel Crespy
Summary: Corrosion is a significant issue for metals and alloys, but can be reduced by adding corrosion inhibitors to coatings, leading to the development of polymer-corrosion inhibitor conjugates. Different fields of applications require different levels and types of metal protection, where beta-thiopropionate and ester linkages play a role in providing suitable protection for varying corrosion levels.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Amy Edo-Osagie, Dylan Serillon, Federica Ruani, Xavier Barril, Christophe Gourlaouen, Nicola Armaroli, Barbara Ventura, Henri-Pierre Jacquot de Rouville, Valerie Heitz
Summary: A multi-responsive receptor consisting of two (acridinium-Zn(II) porphyrin) conjugates has been designed, showing eight states resulting from the cascade of recognition and responsive events. The binding constant between the receptor and a ditopic guest can be modulated by the addition of nucleophiles and oxidation of the porphyrin units. The acridinium/acridane conversion leads to a significant change in the photophysical properties, with a switch from electron to energy transfer processes. Interestingly, charge-transfer luminescence in the near-infrared has been observed for the bis(acridinium-Zn(II) porphyrin) receptor.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Medicinal
Yanjun Wang, Xiangchao Shi, Hongbao Fang, Zhong Han, Hao Yuan, Zhenzhu Zhu, Lei Dong, Zijian Guo, Xiaoyong Wang
Summary: PtPAN is a platinum-based photosensitizer that is unreactive to DNA in the dark but highly cytotoxic upon near-infrared irradiation for oxygen-independent photodynamic therapy. With its two-photon excitation property, PtPAN may be suitable for the treatment of deep solid tumors.
JOURNAL OF MEDICINAL CHEMISTRY
(2022)
Article
Chemistry, Organic
Vratta Grover, Mangalampalli Ravikanth
Summary: Three examples of moderately aromatic p-benzidithiasapphyrin and p-benzi tellurathiasapphyrin have been synthesized using p-benzithiophenediol and 16-thia/telluratripyrrane under acid-catalyzed reaction conditions. X-ray structural analysis showed that the thiophene ring in p-benzidithiasapphyrin is inverted, while the tellurophene ring in p-benzi tellurathiasapphyrins is in normal conformation. However, NMR studies revealed that the thiophene ring in protonated p-benzidithiasapphyrin flips to normal, while the tellurophene ring in p-benzi tellurathiasapphyrins flips to inverted orientation.
Article
Chemistry, Multidisciplinary
Srikanta Debata, Suvendu Kumar Panda, Satyaprakash Trivedi, William Uspal, Dhruv Pratap Singh
Summary: This study demonstrates a rod-shaped light-driven micromotor that can exhibit controlled swimming behavior by changing the pH of the medium. The findings have potential implications in microfluidics, micromachining, environmental sciences, and biomedicine.
Article
Chemistry, Multidisciplinary
Hongxu Liu, Chiara Lionello, Jenna Westley, Annalisa Cardellini, Uyen Huynh, Giovanni M. Pavan, S. Thayumanavan
Summary: Understanding the structural factors that control the dynamics of supramolecular assemblies and modulating the dynamics transition point by subtle changes in hydrophobic patches on the hydrophilic face help in the rational design of enzyme-responsive assemblies with tunable temperature responsive profiles.
Review
Chemistry, Applied
Jong Min An, Kyung Oh Jung, Myung Sook Oh, Dokyoung Kim
Summary: The correlation between diseases and acetylcholinesterase (AChE) has been emphasized in the medical field. AChE-responsive fluorescent probes can enhance the prevention of unexpected human diseases. This review discusses recent advances in AChE-responsive fluorescent probes for real-time detection of AChE expression and activity, categorized based on sensing rationale. Photophysical properties and proof-of-concept visualization studies are also summarized. It is hoped that this review will inspire the development of AChE-responsive fluorescent probes and contribute to improving global health conditions.
Article
Chemistry, Multidisciplinary
Qiang Chen, Amber L. Thompson, Kirsten E. Christensen, Peter N. Horton, Simon J. Coles, Harry L. Anderson
Summary: This study reported the synthesis of unprecedented β,β-directly linked cyclic zinc porphyrin oligomers, the trimer (CP3) and tetramer (CP4), through Yamamoto coupling of a 2,3-dibromoporphyrin precursor. The three-dimensional structures of CP3 and CP4 were confirmed by various analytical techniques. CP3 exhibited a propeller shape while CP4 had a saddle shape, resulting in different photophysical and electrochemical properties. CP4 also showed affinity for fullerenes, forming complexes with C70 and C60 in toluene solution.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Yi-Tao Xu, Urmi Vijay Mody, Mark J. MacLachlan
Summary: The study found that adding colloidal additives such as cellulose nanocrystals and clay nanoparticles to graphene oxide (GO) suspensions can result in significant color changes and tunable photonic properties. Blending polymeric or molecular additives with GO suspensions either deteriorates or has no impact on the photonic properties. This helps understand the interaction between GO suspensions and additives at different length scales.
Article
Chemistry, Multidisciplinary
Qiang Chen, Amber L. Thompson, Kirsten E. Christensen, Peter N. Horton, Simon J. Coles, Harry L. Anderson
Summary: In this study, unprecedented β,β-directly linked cyclic zinc porphyrin oligomers, the trimer (CP3) and tetramer (CP4), were synthesized and their three-dimensional structures were confirmed. The different geometries of CP3 and CP4 result in distinct photophysical and electrochemical properties. CP4, with its saddle-shaped structure, serves as a ditopic receptor for fullerenes.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Xichong Ye, Bowen Li, Zhaoxu Wang, Jing Li, Jie Zhang, Xinhua Wan
Summary: Hierarchically ordered chiral crystals have been the focus of intensive research efforts due to their potential applications in optical devices, asymmetric catalysis, and pharmaceutical crystal engineering. However, the use of expensive enantiomerically pure building blocks and the challenge of precise control over chirality transfer have hindered their practical application. A new strategy described in this study offers a solution by enabling the preferred formation of one enantiomorph from a racemic solution and subsequent enantiomer-specific oriented attachment through a balance of stereoselective and non-stereoselective interactions. This methodology allows for the efficient fabrication of homochiral organic crystals from racemic starting materials, demonstrating the potential for immediate practical use.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Hiroaki Kitagishi, Daiki Shimoji, Takehiro Ohta, Ryo Kamiya, Yasuhiro Kudo, Akira Onoda, Takashi Hayashi, Jean Weiss, Jennifer A. Wytko, Koji Kano
Article
Chemistry, Physical
Alexander R. Grimm, Daniel F. Sauer, Mehdi D. Davari, Leilei Zhu, Marco Bocola, Shunsuke Kato, Akira Onoda, Takashi Hayashi, Jun Okuda, Ulrich Schwaneberg
Article
Chemistry, Multidisciplinary
Akira Onoda, Yuta Tanaka, Koki Matsumoto, Minoru Ito, Takao Sakata, Hidehiro Yasuda, Takashi Hayashi
Article
Biochemistry & Molecular Biology
Hidehiro Ito, Ryuichi Kondo, Kosei Yoshimori, Toshiaki Kamachi
Article
Chemistry, Physical
Tomoki Himiyama, Minoru Waki, Dolores Esquivel, Akira Onoda, Takashi Hayashi, Pascal Van der Voort, Shinji Inagaki
Review
Chemistry, Multidisciplinary
Koji Oohora, Akira Onoda, Takashi Hayashi
ACCOUNTS OF CHEMICAL RESEARCH
(2019)
Article
Biochemical Research Methods
Nozomu Inoue, Akira Onoda, Takashi Hayashi
BIOCONJUGATE CHEMISTRY
(2019)
Article
Biochemistry & Molecular Biology
Akira Onoda, Nozomu Inoue, Eigo Sumiyoshi, Takashi Hayashi
Article
Microbiology
Hidehiro Ito, Kosei Yoshimori, Masahito Ishikawa, Katsutoshi Hori, Toshiaki Kamachi
Summary: In this study, a methanol production system was established using methanotroph mutants to control the expression of methanol dehydrogenase (MDH), allowing for methanol accumulation. By modulating the metal ion composition, the conditions for cell growth inhibition and methanol accumulation were repeatedly alternated, showcasing the potential for efficient conversion of methane to methanol.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Multidisciplinary Sciences
Hiroyuki Kawata, Masahiro Kohno, Kohei Nukina, Isanori Horiuchi, Hisataka Goda, Tomomi Kuwahara, Kosei Yoshimori, Akimitsu Miyaji, Toshiaki Kamachi, Toshikazu Yoshikawa
Summary: This study identified the chloroperoxyl radical as the active species in acidic sodium chlorite using ESR spectroscopy and demonstrated the feasibility of quantifying it with the DPD method. The chloroperoxyl radical showed high thermodynamic stability and had a linear relationship between its UV-visible absorbance at 354 nm and the ESR signal intensity. Quantifying the free chlorine concentration with the DPD method also showed a linear relationship with the absorbance and ESR signal intensity, suggesting the potential for quantifying the chloroperoxyl radical as the active species in ASC aqueous solution.
Article
Multidisciplinary Sciences
Masahiro Kohno, Toshiaki Kamachi, Koji Fukui
Summary: This study investigated the states of oxygen, nitrogen, and hydrogen dissolved in water using experimental trials and theoretical calculations. The results showed that the Earth's magnetic field is involved in the bonding and dissociation of molecules at the gas-liquid interface, and molecular interactions caused by electromagnetic properties and the external geomagnetic field affect intermolar bonding.
Article
Multidisciplinary Sciences
Zhen Lei, Mizuki Endo, Hitoshi Ube, Takafumi Shiraogawa, Pei Zhao, Koichi Nagata, Xiao-Li Pei, Tomoya Eguchi, Toshiaki Kamachi, Masahiro Ehara, Takeaki Ozawa, Mitsuhiko Shionoya
Summary: Photoluminescent gold clusters with unique chemical and physical properties based on the perturbed electronic structures have been synthesized using N-heterocyclic carbene ligands.
NATURE COMMUNICATIONS
(2022)
Article
Biotechnology & Applied Microbiology
Wataru Shiina, Hidehiro Ito, Toshiaki Kamachi
Summary: In this study, a lanthanide transporter was identified in Methylosinus trichosporium OB3b, and a potential interaction between intracellular lanthanide and glycerol was indicated. Understanding the genetic and environmental factors affecting lanthanide uptake should not only help improve the use of lanthanides for the bioconversion of methane into valuable products like methanol but also be of value for developing biomining to extract lanthanides under neutral conditions.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Chemistry, Medicinal
Fargol Taba, Akira Onoda, Urara Hasegawa, Toshiaki Enoki, Yousuke Ooyama, Joji Ohshita, Takashi Hayashi
Article
Chemistry, Physical
Yuta Tanaka, Akira Onoda, Shin-ichi Okuoka, Tomoyuki Kitano, Koki Matsumoto, Takao Sakata, Hidehiro Yasuda, Takashi Hayashi