Article
Chemistry, Analytical
Kun Hu, Yuanfan Li, Chuanxin Ge, Ling Bai, Guiwu Liu, Guanjun Qiao, Sung Gu Kang, Eui Jung Kim, Mingsong Wang
Summary: In this work, a three-dimensional ordered macroporous Au-loaded SnO2 sensor was developed, demonstrating ultrahigh room-temperature ppb-level NO2 sensitivity under intermittent UV light irradiation. The Au/SnO2 inverse opal structure was fabricated using a polystyrene opal crystal template, with finely dispersed Au nanoparticles anchored on the interconnected walls of SnO2. The decoration of Au nanoparticles improved the NO2 response of SnO2, especially under intermittent UV irradiation. The sensing mechanism responsible for the enhanced response toward NO2 was explained.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Medicinal
Masaki Honda, Hakuto Kageyama, Yelin Zhang, Takashi Hibino, Motonobu Goto
Summary: This study investigated the effect of oral supplementation with Astaxanthin on UV light-induced skin damage in guinea pigs. The results showed that Astaxanthin accumulates in the skin and prevents UV light-induced skin damage. The Z-isomers of Astaxanthin showed better skin-protective ability and reduced skin pigmentation caused by Astaxanthin accumulation compared to the all-E-isomer.
Article
Chemistry, Physical
Ziyuan Liu, Zhongyong Qiu, Chunju He
Summary: Inspired by Watasenia Scintillans, a novel antifouling coating with highly hydrophilic surface and luminescence layer is reported. The coating shows excellent performance in resisting non-specific protein adhesion and attachment of fouling organisms. The long-term underwater field tests also demonstrate its durability and effectiveness in inhibiting various biological fouling.
APPLIED SURFACE SCIENCE
(2022)
Article
Agriculture, Multidisciplinary
Emma B. A. Hinderink, Claire C. Berton-Carabin, Karin Schroen, Alain Riaublanc, Berenice Houinsou-Houssou, Adeline Boire, Claude Genot
Summary: Proteins play a key role in stabilizing emulsions, with their molecular properties affecting their interfacial and emulsifying properties. Fluorescence spectroscopy can provide insights into protein conformation. Whey proteins and pea proteins show different behaviors in emulsions, with whey proteins adsorbing at the oil-water interface rich in Trp residues while pea proteins exhibit soluble aggregates with no changes in Trp residues upon emulsification.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Chemistry, Physical
Yuejing Zeng, Jin Yang, Xiu Shen, Ruiyang Li, Zhiqiang Chen, Xiao Huang, Peng Zhang, Jinbao Zhao
Summary: A new lithiated-interpenetrating network gel-polymer electrolyte (LIPN-GPEs) has been designed and fabricated by ultraviolet-irradiation radical polymerization. The LIPN-GPEs exhibit excellent mechanical strength and flexibility due to the interpenetrating network, which eliminates volume changes of the lithium anode during the deposition/stripping process. Furthermore, the LIPN-GPEs demonstrate better self-supporting nature, high ionic conductivity, and stable SEI composition, making them ideal for lithium metal batteries. The study also shows that the LIPN-GPEs have wider electrochemical window, exceptional thermal stability, and good high-voltage resistance, indicating their potential in wearable devices.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Fuyuki Nakagawa, Ryota Kichijo, Mizuki Matsukawa, Ke-Hsuan Wang, Yoshiro Imura, Takeshi Kawai
Summary: We have demonstrated a UV irradiation method to synthesize conductive silver nanosheets from monolayers of silver nanoparticles (AgNPs). The process involves the decomposition of a cationic water-insoluble surfactant under UV irradiation, which promotes sintering between AgNPs and converts their surfaces into conductive nanosheets. Additionally, AgNPs from the surrounding area infiltrate the UV-irradiated region, allowing the fabrication of nanosheets with loosely packed, low-density structures and numerous voids.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Food Science & Technology
Hannes Bitterling, Lilo Mailaender, Walter Vetter, Dietmar R. Kammerer, Florian C. Stintzing
Summary: The impact of naturally occurring furocoumarins on essential agrumen oils was investigated, and it was found that the absence of furocoumarins led to the degradation of terpenes and the formation of hydroperoxides. However, the addition of furocoumarins slowed down the photo degradation and improved the olfactory quality of the oils. Blends of furocoumarins and terpenes can extend the shelf-life of light-sensitive oils.
EUROPEAN FOOD RESEARCH AND TECHNOLOGY
(2022)
Article
Virology
Larisa V. Kordyukova, Andrey V. Moiseenko, Marina V. Serebryakova, Marina A. Shuklina, Maria V. Sergeeva, Dmitry A. Lioznov, Andrei V. Shanko
Summary: In this study, different methods for inactivating the SARS-CoV-2 virus were compared, and it was found that beta-propiolactone, formaldehyde, and UV radiation can successfully inactivate the virus. The study also found that the beta-propiolactone-inactivated samples had a higher abundance of needle-like proteins on the viral surface. Mass spectrometry analysis detected the structural proteins of SARS-CoV-2. The results showed that the formaldehyde and UV-inactivated samples had the highest immunoreactivity against convalescent sera, while the beta-propiolactone and UV-inactivated samples showed stronger immunoreactivity against sera from people vaccinated with Sputnik V.
Article
Chemistry, Multidisciplinary
Hiromu Kubo, Takashi Hirose, Daiki Shimizu, Kenji Matsuda
Summary: A newly designed and synthesized helicene with high fluorescence quantum yield and circularly polarized luminescence properties showed solvatofluorochromism while maintaining good CPL performance.
Article
Chemistry, Organic
Akihiro Shimizu, Yu Ishizaki, Shun Horiuchi, Takashi Hirose, Kenji Matsuda, Hiroyasu Sato, Jun-ichi Yoshida
Summary: The study focused on designing and synthesizing small pi-conjugated zwitterions with electron-donating anions and electron-accepting cations. By adjusting the energy difference and interplanar angle between the anion's HOMO and the cation's LUMO, the molecules exhibited small HOMO-LUMO energy gaps, showing amphoteric redox properties and near-infrared electronic absorption exceeding 1000 nm.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Hiromu Kubo, Takashi Hirose, Takuya Nakashima, Tsuyoshi Kawai, Jun-ya Hasegawa, Kenji Matsuda
Summary: Substituting the [7]helicene framework can enhance the transition magnetic dipole moment (TMDM) for the S-1 -> S-0 transition, resulting in a higher fluorescence emission rate and improved optical properties in the derivative helicenes.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Takuya Fukushima, Kenta Tamaki, Atsushi Isobe, Takashi Hirose, Nobutaka Shimizu, Hideaki Takagi, Rie Haruki, Shin-ichi Adachi, Martin J. Hollamby, Shiki Yagai
Summary: The research investigates the helical folding mechanism of a novel type of SPs, realizing a reversible folding/unfolding process driven by photoisomerization. The helical folding is driven by internal structure ordering of the SP fiber that repairs defects and occurs only for the resulting helicoidal structure.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Daisuke Sakamaki, Shunya Tanaka, Katsuki Tanaka, Mayu Takino, Masayuki Gon, Kazuo Tanaka, Takashi Hirose, Daichi Hirobe, Hiroshi M. Yamamoto, Hideki Fujiwara
Summary: The study comprehensively investigated two types of double NO-hetero[5]helicenes composed of 12H-benzo[b]phenoxazine (BPO) and 13H-dibenzo[b,i]phenoxazine (DBPO). These helicenes exhibit good electron-donor properties and can function as p-type semiconductors. They also demonstrate the largest class of dissymmetry factors for circularly polarized luminescence (CPL) among helicenes reported to date, with opposite CPL signs for helicenes of different helicity.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Yusuke Nakakuki, Takshi Hirose, Kenji Matsuda
Summary: The electron transport capabilities of helically twisted molecules were evaluated theoretically, and it was found that the p-extended helicene with an olefinic electronic nature inside the helical framework exhibited excellent transport capability.
Article
Chemistry, Multidisciplinary
Guanglin Huang, Shota Hasegawa, Yoshifumi Hashikawa, Yuki Ide, Takashi Hirose, Yasujiro Murata
Summary: In this study, an H2O2 molecule was isolated inside hydroxylated open-cage fullerene derivatives, with two structural isomers obtained depending on the reduction site. The encapsulation ratio reached 81% at low temperature, showing strong hydrogen bonding between the encapsulated H2O2 and the hydroxy group at the orifice center. The presence of the hydroxy group acting as a kinetic stopper, together with intramolecular hydrogen bonding interaction, contributed to the high encapsulation ratio of 100% for one of the peroxosolvates isolated by HPLC.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Organic
Yusuke Nakakuki, Takashi Hirose, Kenji Matsuda
Summary: This paper reports the synthesis of a near-infrared emitter, tetrabenzo[f,jk,mn,r][7]helicene, with thermally stable helical chirality. The compound, consisting of only 44 carbon atoms, exhibits broad NIR fluorescence.
Article
Chemistry, Multidisciplinary
Ryuto Yasui, Daiki Shimizu, Kenji Matsuda
Summary: The single-molecular conductance between two pi-conjugated wires with and without a radical substituent has been compared. The study found that the radical-substituted wire has significantly higher conductance than the methyl-substituted reference, despite the fact that only a small portion of the radical is distributed on the wire. This study demonstrates the potential of radical substituents in achieving high conductivity in molecular wires.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Editorial Material
Chemistry, Multidisciplinary
Ryuto Yasui, Daiki Shimizu, Kenji Matsuda
Summary: This study compares the single-molecular conductance between pi-conjugated wires with and without a radical substituent. The results show that the radical-substituted wire has 3.2 times higher conductance than the methyl-substituted reference. This study demonstrates the potential of radical substituents to achieve high conductivity in molecular wires.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Organic
Masato Hisada, Daiki Shimizu, Kenji Matsuda
Summary: This article describes the synthesis and characterization of doubly diphenylene-fused 2,3,6,7-tetraazanaphthalene 1. X-ray diffraction analysis showed a highly twisted structure of 1, with a large degree of twisting. In the crystal, the molecules of 1 formed an orthogonal one-dimensional column with pi-stacking of diphenylene moieties and exhibited a rare example of lone-pair/pi* interaction in a supramolecular assembly.
Article
Multidisciplinary Sciences
Yusuke Nakakuki, Takashi Hirose, Hikaru Sotome, Min Gao, Daiki Shimizu, Ruiji Li, Jun-Ya Hasegawa, Hiroshi Miyasaka, Kenji Matsuda
Summary: Helically twisted conductive nanocarbon materials are suitable for optoelectronic and electromagnetic molecular devices on the nanometer scale, showing a large effective conjugation length and ultrafast decay dynamics. The extended π-helicenes achieved a large effective conjugation length through helical fusion, leading to an absorption edge in the near-infrared region.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Issei Ikariko, Sunnam Kim, Yae Hiroyasu, Kenji Higashiguchi, Kenji Matsuda, Takashi Hirose, Hikaru Sotome, Hiroshi Miyasaka, Satoshi Yokojima, Masahiro Irie, Seiji Kurihara, Tuyoshi Fukaminato
Summary: This study discovered a unique photoreaction mechanism of a photoswitching molecule that undergoes unexpected cyclization upon visible-light irradiation, which is enhanced in the presence of oxygen.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
