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Carbon dots as reductants to fabricate three-dimensional Au mesoflowers as SERS substrates 以碳点为还原剂制造三维金介质流作为 SERS 基底
IF 1.4 4区 化学
Chemistry Letters Pub Date : 2024-07-01 DOI: 10.1093/chemle/upae119
Chenxu Wang, Zhilong Lin, Wenqin Wang
{"title":"Carbon dots as reductants to fabricate three-dimensional Au mesoflowers as SERS substrates","authors":"Chenxu Wang, Zhilong Lin, Wenqin Wang","doi":"10.1093/chemle/upae119","DOIUrl":"https://doi.org/10.1093/chemle/upae119","url":null,"abstract":"\u0000 Reductive carbon dots (CDs) were obtained by a hydrothermal method using citric acid and diethylenetriamine as carbon sources. Three-dimensional Au mesoflowers (3D Au MFs) could be fabricated by directly mixing HAuCl4 and CD solution without using any extra reductant and morphology-directing reagent. The as-obtained 3D Au MFs exhibited high surface-enhanced Raman spectroscopy (SERS) activity in detection of methylene blue.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141695135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of a Symmetrically meta-Substituted Poly(diphenylacetylene) Bearing Chiral Amide Groups and Its Application as a Chiral Stationary Phase for HPLC 含有手性酰胺基团的对称元取代聚（二苯基乙炔）的合成及其在高效液相色谱手性固定相中的应用
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-07-01 DOI: 10.1093/chemle/upae129
Sanhanut Kesornsit, Tsuyoshi Taniguchi, Mai Nozaki, Tatsuya Nishimura, Katsuhiro Maeda
{"title":"Synthesis of a Symmetrically meta-Substituted Poly(diphenylacetylene) Bearing Chiral Amide Groups and Its Application as a Chiral Stationary Phase for HPLC","authors":"Sanhanut Kesornsit, Tsuyoshi Taniguchi, Mai Nozaki, Tatsuya Nishimura, Katsuhiro Maeda","doi":"10.1093/chemle/upae129","DOIUrl":"https://doi.org/10.1093/chemle/upae129","url":null,"abstract":"A symmetrically meta-substituted poly(diphenylacetylene) bearing chiral amide groups was synthesized by reacting (R)-1-phenylethylamine with a carboxy-group-containing precursor polymer, which was obtained by polymerizing the corresponding ester-containing diphenylacetylene using a modified Mo(V)-based catalytic system followed by hydrolysis. The polymer formed a one-handed helical conformation when thermally annealed in a solvent. The chiral recognition ability of the polymer before and after thermal annealing was investigated when used as a chiral stationary phase for high-performance liquid chromatography.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141502675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Solvated Ba2+ with square antiprismatic and cubic coordination geometries 具有方形反方和立方配位几何结构的溶解 Ba2+
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-06-28 DOI: 10.1093/chemle/upae126
Ayano Umakoshi, Takuo Minato, Yusuke Kanematsu, Masahiro Sadakane
{"title":"Solvated Ba2+ with square antiprismatic and cubic coordination geometries","authors":"Ayano Umakoshi, Takuo Minato, Yusuke Kanematsu, Masahiro Sadakane","doi":"10.1093/chemle/upae126","DOIUrl":"https://doi.org/10.1093/chemle/upae126","url":null,"abstract":"Solvated metal cations represent fundamental and crucial mononuclear species in various research fields, including chemical, physical, and biochemical studies. However, controlling their coordination geometry poses a significant challenge. In this study, we successfully synthesized and structurally characterized solvated Ba2+ complexes. The coordination geometry of [Ba(CH3CN)8]2+ was a thermodynamically stable square antiprism, while that of [Ba{(CH3)2CO}8]2+ exhibited a rare cubic structure, demonstrating a unique approach to controlling coordination geometry solely by altering crystallization solvents.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141502677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chain-length dependence in adsorption of perfluoroalkylcarboxylic acid on vesicles composed of amphiphiles with two bent hydrophobic chains 全氟烷基羧酸在具有两条弯曲疏水链的双亲化合物构成的囊泡上的吸附与链长有关
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-06-26 DOI: 10.1093/chemle/upae106
Hatsuho Usuda, Takahiro Toyoshima, Yoshie Mishima, Koji Sakurai, Chieko Takamura, Akira Takahashi, Kimitaka Minami, Tohru Kawamoto
{"title":"Chain-length dependence in adsorption of perfluoroalkylcarboxylic acid on vesicles composed of amphiphiles with two bent hydrophobic chains","authors":"Hatsuho Usuda, Takahiro Toyoshima, Yoshie Mishima, Koji Sakurai, Chieko Takamura, Akira Takahashi, Kimitaka Minami, Tohru Kawamoto","doi":"10.1093/chemle/upae106","DOIUrl":"https://doi.org/10.1093/chemle/upae106","url":null,"abstract":"Per- and polyfluoroalkyl substances (PFAS) are widely used but can have harmful effects on the human body. Activated carbon has been used to remove PFAS from water; however, vesicles consisting of amphiphiles are adsorbent candidates. Optimization of PFAS adsorption using vesicles has not yet been achieved. We analyzed the chain-length dependence of perfluorocarboxylic acid (PFCA) adsorption on vesicles composed of amphiphiles with two bent hydrophobic chains containing cis-double bonds to reveal the interaction between vesicles and PFCA.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141502678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nickel-photoredox-catalyzed E- and Z-stereoconvergent coupling of alkenyl halides and phenols 镍光氧化催化烯基卤化物和苯酚的 E 和 Z 立体转化偶联反应
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-06-25 DOI: 10.1093/chemle/upae111
Sodai Nishino, Takuya Kurahashi
{"title":"Nickel-photoredox-catalyzed E- and Z-stereoconvergent coupling of alkenyl halides and phenols","authors":"Sodai Nishino, Takuya Kurahashi","doi":"10.1093/chemle/upae111","DOIUrl":"https://doi.org/10.1093/chemle/upae111","url":null,"abstract":"Herein, we report a Ni-photoredox-catalyzed stereoconvergent coupling of phenols and alkenyl halides, which affords a Z-coupling product. Moreover, by simply changing the solvent, the reaction also provides access to the E-coupling product with high stereoselectivity. The key factor for changing the stereoisomer of the product was found to be the fluorescence lifetime of photocatalyst.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141518757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-pressure X-ray study of NbON oxynitride: direct transition from baddeleyite to cotunnite structure 氧化铌氮化物的高压 X 射线研究：从巴德利特结构直接过渡到阳起石结构
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-06-24 DOI: 10.1093/chemle/upae113
Shumma Kozaki, Yao Yuan, Hiroki Ubukata, Zefeng Wei, Tatsuya Tsumori, Shuto Asano, Ken Niwa, Masashi Hasegawa, Hiroshi Kageyama
{"title":"High-pressure X-ray study of NbON oxynitride: direct transition from baddeleyite to cotunnite structure","authors":"Shumma Kozaki, Yao Yuan, Hiroki Ubukata, Zefeng Wei, Tatsuya Tsumori, Shuto Asano, Ken Niwa, Masashi Hasegawa, Hiroshi Kageyama","doi":"10.1093/chemle/upae113","DOIUrl":"https://doi.org/10.1093/chemle/upae113","url":null,"abstract":"The structural properties of NbON oxynitride under high pressure were investigated through in situ synchrotron X-ray diffraction (SXRD) up to 43 GPa. It was found that the bulk modulus of baddeleyite NbON (290 GPa) is larger than that of ZrO2 (150 GPa), indicating that the introduction of highly covalent nitrogen imparts greater stiffness. Furthermore, SXRD patterns reveal the emergence of a peak signaling a new crystalline phase above around 20 GPa. This is in contrast to TaON, where diffraction patterns only show an increase in background beyond 33 GPa. First-principle calculations suggest that the high-pressure phase adopts an orthorhombic cotunnite-type structure, distinguishing it from the oxide counterparts, wherein the ambient pressure phase transforms to a cotunnite structure via an orthorhombic-I structure.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141502679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Efficient Inactivation of Influenza Virus Through Adsorption of Nanoceria and its Oxidative Power 通过吸附纳米铈及其氧化能力高效灭活流感病毒
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-06-21 DOI: 10.1093/chemle/upae124
Shota Sekiguchi, Eisuke Umezawa, Hiroko Ito Yamanaka, Kan Fujino, Takahiro Motoshiromizu, Miho Kawanishi Ouchi, Shunsuke Murai, Tomohide Masuda, Masateru Ito, Hitoshi Nobumasa, Satoshi Taharaguchi
{"title":"Efficient Inactivation of Influenza Virus Through Adsorption of Nanoceria and its Oxidative Power","authors":"Shota Sekiguchi, Eisuke Umezawa, Hiroko Ito Yamanaka, Kan Fujino, Takahiro Motoshiromizu, Miho Kawanishi Ouchi, Shunsuke Murai, Tomohide Masuda, Masateru Ito, Hitoshi Nobumasa, Satoshi Taharaguchi","doi":"10.1093/chemle/upae124","DOIUrl":"https://doi.org/10.1093/chemle/upae124","url":null,"abstract":"This study investigated the stabilizer's impact on nanoceria's antiviral activity. The positively charged nanoceria dispersion showed potent activity against the influenza virus, reducing the viral titer by over 4.0 log10 pfu/mL within 1 h, surpassing EN14476 criteria. It also inactivated the virus within 15 s, decreasing the infection titer by 2.2 log10 pfu/mL, and maintained efficacy even under bovine serum albumin loading.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141518758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Depth-resolved potentiometric detection of active species near the surface of an aqueous solution under atmospheric pressure plasma 常压等离子体下水溶液表面附近活性物种的深度分辨电位计检测
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-06-14 DOI: 10.1093/chemle/upae122
Kai Kubota, Yuko Yokoyama, Naoya Nishi, T. Sakka
{"title":"Depth-resolved potentiometric detection of active species near the surface of an aqueous solution under atmospheric pressure plasma","authors":"Kai Kubota, Yuko Yokoyama, Naoya Nishi, T. Sakka","doi":"10.1093/chemle/upae122","DOIUrl":"https://doi.org/10.1093/chemle/upae122","url":null,"abstract":"\u0000 Near the plasma/water interface highly active species such as ·OH are formed, providing unique reaction fields. To develop interfacial reaction systems that utilize them, it is important to conduct in-situ quantitative analysis for their supply and consumption kinetics. In this study, depth- and time-resolved in-situ potentiometric measurements were performed to detect redox-active species, such as OH radicals. A Pt electrode employed as an indicator electrode showed a large potential shift to 1.5 V vs SHE only when the depth is less than 10 µm, suggesting the presence of ·OH.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141341412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis, Characterization, and OFET Characteristics of p-Type Organic Semiconductors Incorporating Diketopyrrolopyrrole and Thiadiazole-Quinoxaline Acceptors 包含二酮吡咯并噻二唑-喹喔啉受体的 p 型有机半导体的合成、表征和 OFET 特性
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-06-13 DOI: 10.1093/chemle/upae115
Naohiro Takahashi, Tomoki Nishiyama, Weichun Weng, Yuki Miwa, Shinsuke Marumoto, Hirotaka Kitoh-Nishioka, Senku Tanaka, Takashi Okubo
{"title":"Synthesis, Characterization, and OFET Characteristics of p-Type Organic Semiconductors Incorporating Diketopyrrolopyrrole and Thiadiazole-Quinoxaline Acceptors","authors":"Naohiro Takahashi, Tomoki Nishiyama, Weichun Weng, Yuki Miwa, Shinsuke Marumoto, Hirotaka Kitoh-Nishioka, Senku Tanaka, Takashi Okubo","doi":"10.1093/chemle/upae115","DOIUrl":"https://doi.org/10.1093/chemle/upae115","url":null,"abstract":"\u0000 P-type Organic Semiconductors, TQx5-BT-DPP8 (1a) and TQx5-BT-DPP20 (1b), consisting of a donor unit of bithiophene (BT) and two acceptor units of thiadiazole quinoxaline (TQx) and diketopyrrolopyrrole (DPP), were synthesized, and their electronic states and physical properties were elucidated. These semiconductors demonstrate strong absorption extending from the visible to the near-infrared region, functioning effectively as strong donor dyes. The organic field-effect transistors (OFETs) exhibited normally on transistor characteristics, with carrier mobilities of 1.1×10−3 cm2/Vs for 1a and 3.3×10−4 cm2/Vs for 1b.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141346060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unravelling the crystallization mechanism of trinuclear Au complexes through crystal size-dependent luminescence 通过晶体尺寸发光揭示三核金配合物的结晶机制
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-06-12 DOI: 10.1093/chemle/upae121
Andriani Furoida, Urara Shiina, Kohsuke Matsumoto, Osamu Tsutsumi
{"title":"Unravelling the crystallization mechanism of trinuclear Au complexes through crystal size-dependent luminescence","authors":"Andriani Furoida, Urara Shiina, Kohsuke Matsumoto, Osamu Tsutsumi","doi":"10.1093/chemle/upae121","DOIUrl":"https://doi.org/10.1093/chemle/upae121","url":null,"abstract":"\u0000 The trinuclear Au complex, DT4, demonstrates room-temperature phosphorescence (RTP) in the crystalline state, along with size-dependent polymorphism. The phase transition between the crystal polymorphs of DT4 can be directly observed in real time during crystal growth through changes in RTP color. This study aims to elucidate the crystallization mechanism of DT4, focusing specifically on determining the critical particle size at which crystal-to-crystal phase transitions occur during crystal growth.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141354693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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