发布求助
文献互助 智能选刊 最新文献

Chemistry Letters最新文献

筛选
英文 中文
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":"84 1","pages":""},"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":"74 1","pages":""},"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":"42 1","pages":""},"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":"17 1","pages":""},"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
Encapsulation of silver nanoplates into poly(lactic-co-glycolic) acid nanoparticles and the antibacterial activity against intracellular bacteria 聚（乳酸-共聚乙醇）酸纳米粒子中的银纳米粒子封装及其对细胞内细菌的抗菌活性
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-05-31 DOI: 10.1093/chemle/upae084
Ryoko Nawata, Sayo Maruyama, Wei Xu, Takuro Niidome
{"title":"Encapsulation of silver nanoplates into poly(lactic-co-glycolic) acid nanoparticles and the antibacterial activity against intracellular bacteria","authors":"Ryoko Nawata, Sayo Maruyama, Wei Xu, Takuro Niidome","doi":"10.1093/chemle/upae084","DOIUrl":"https://doi.org/10.1093/chemle/upae084","url":null,"abstract":"We encapsulated silver nanoplates (AgNPLs) into poly(lactic-co-glycolic) acid (PLGA) nanoparticles. The encapsulation stabilized the AgNPLs in a physiological environment and the antibacterial activity of the AgNPLs against planktonic bacteria was reduced. However, the PLGA nanoparticles encapsulating the AgNPLs were internalized into macrophages and showed antibacterial activity against intracellular bacteria. AgNPL-loaded PLGA nanoparticles are promising for treating intractable infectious diseases caused by bacteria-infecting macrophages.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":"26 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141255245","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
Ni-photoredox-catalyzed amide arylation reaction using amidyl radical formation via PCET 通过 PCET 形成酰胺基，利用镍光氧催化酰胺芳基化反应
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-05-30 DOI: 10.1093/chemle/upae088
Sodai Nishino, Takuya Kurahashi
{"title":"Ni-photoredox-catalyzed amide arylation reaction using amidyl radical formation via PCET","authors":"Sodai Nishino, Takuya Kurahashi","doi":"10.1093/chemle/upae088","DOIUrl":"https://doi.org/10.1093/chemle/upae088","url":null,"abstract":"Herein, we report the N-arylation of amides based on the formation of N-centered amidyl radicals via proton-coupled electron transfer (PCET) using a nickel–photoredox dual catalyst. The reaction achieved arylation of sterically hindered linear secondary amides under mild conditions. Control experiments with radical inhibitors suggested the formation of amidyl radicals via the PCET mechanism.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":"37 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141255382","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 and Properties of 1,3-Dithiole[6]dendralene Analogs with Two Thiophene Spacers Inserted 插入两个噻吩间隔物的 1,3-二硫代[6]树枝烯类似物的合成及其特性
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-05-30 DOI: 10.1093/chemle/upae104
Tomoya Misaki, Masataka Nishiwaki, Toshiki Ito, Masafumi Ueda, Masahiro Fujisaki, Aya Yoshimura, Takashi Shirahata, Minoru Hayashi, Yohji Misaki
{"title":"Synthesis and Properties of 1,3-Dithiole[6]dendralene Analogs with Two Thiophene Spacers Inserted","authors":"Tomoya Misaki, Masataka Nishiwaki, Toshiki Ito, Masafumi Ueda, Masahiro Fujisaki, Aya Yoshimura, Takashi Shirahata, Minoru Hayashi, Yohji Misaki","doi":"10.1093/chemle/upae104","DOIUrl":"https://doi.org/10.1093/chemle/upae104","url":null,"abstract":"Derivatives of a 1,3-dithiole[6]dendralene analog with two thiophene spacers inserted (2) have been successfully synthesized. Cyclic voltammetry and spectroelectrochemistry revealed that their redox behavior, based on the distribution of the positive charges, differed depending on the position and the electronic effect of substituents on the 1,3-dithiole rings.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":"27 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141257069","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
CSIML: a cost-sensitive and iterative machine-learning method for small and imbalanced materials data sets CSIML：针对小型不平衡材料数据集的成本敏感迭代机器学习方法
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-05-30 DOI: 10.1093/chemle/upae090
Shengzhou Li, Ayako Nakata
{"title":"CSIML: a cost-sensitive and iterative machine-learning method for small and imbalanced materials data sets","authors":"Shengzhou Li, Ayako Nakata","doi":"10.1093/chemle/upae090","DOIUrl":"https://doi.org/10.1093/chemle/upae090","url":null,"abstract":"Materials science research benefits from the powerful machine-learning (ML) surrogate models, but it is also limited by the implicit requirement for sufficiently big and balanced data distribution for ML. In this paper, we propose a model to obtain more credible results for small and imbalanced materials data sets as well as chemical knowledge. Taking 2 bandgaps imbalanced data sets as instances, we demonstrate the usability and performance of our model compared with common ML models with normal sampling and resampling methods.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":"67 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141256668","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
Accelerated water stability test and lifetime prediction of metal-organic frameworks 金属有机框架的加速水稳定性测试和寿命预测
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-05-29 DOI: 10.1093/chemle/upae093
Tetsushi Ohmura, Yusuke Mukae, Yoichi Hosokawa, Hiroshi Nakamura, Takafumi Yamauchi
{"title":"Accelerated water stability test and lifetime prediction of metal-organic frameworks","authors":"Tetsushi Ohmura, Yusuke Mukae, Yoichi Hosokawa, Hiroshi Nakamura, Takafumi Yamauchi","doi":"10.1093/chemle/upae093","DOIUrl":"https://doi.org/10.1093/chemle/upae093","url":null,"abstract":"To predict the lifetime of metal-organic frameworks (MOFs) with high water capacity/stability as water harvesters and adsorption heat pumps, a simple accelerated water stability test was developed using liquid water and water vapor in an autoclave. The function obtained from Bnlnauer-Emmett-Teller (BET) surface area loss analysis of MOF-801-P was applied to lifetime prediction, and a long-term stability test of MOF-801-P with liquid water at 65 °C agreed well with the values predicted using the developed test.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":"23 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141256666","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
Control of sulfur number in sulfur-containing compounds: The effect of base type, equivalent of the base, and reaction solvent in synthesizing linear sulfur 控制含硫化合物中的硫数：碱类型、碱当量和反应溶剂对合成线性硫的影响
IF 1.6 4区 化学
Chemistry Letters Pub Date : 2024-05-28 DOI: 10.1093/chemle/upae105
Ryuto Nishimura, Yuichiro Kobayashi, Ryunosuke Kamioka, Shun Hashimoto, Hiroyasu Yamaguchi
{"title":"Control of sulfur number in sulfur-containing compounds: The effect of base type, equivalent of the base, and reaction solvent in synthesizing linear sulfur","authors":"Ryuto Nishimura, Yuichiro Kobayashi, Ryunosuke Kamioka, Shun Hashimoto, Hiroyasu Yamaguchi","doi":"10.1093/chemle/upae105","DOIUrl":"https://doi.org/10.1093/chemle/upae105","url":null,"abstract":"<jats:title>Abstract</jats:title> Since the properties of sulfur-containing compounds depend on the sulfur number contained in the compound, it is desirable to develop a method to control the sulfur number. A common method for synthesizing sulfur-containing compounds is to mix sulfur with a base to form linear sulfur, which is then reacted with an organic compound to obtain a sulfur-containing compound. In this study, we systematically investigated the relationship between the type of base, equivalent amount of the base, and the reaction solvent and the sulfur number in the resulting sulfur-containing compound. The sulfur number of sulfur-containing compounds prepared in water was controlled by the equivalent ratio of elemental sulfur (S8) and base. Sulfur-containing compound with high sulfur values was obtained using solvents with low dielectric constants and with lower base equivalents compared to S8.","PeriodicalId":9862,"journal":{"name":"Chemistry Letters","volume":"43 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141256766","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信