Chinese Chemical Letters最新文献_第9页

Tuning amino/hydroxyl ratios of nanovesicles to manipulate protein corona-mediated in vivo fate 调整纳米微粒的氨基/羟基比例，操纵蛋白质电晕介导的体内命运

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-06-17 DOI: 10.1016/j.cclet.2024.110134

Wenhao Wang , Siyuan Peng , Zhengwei Huang , Xin Pan

引用次数: 0

Tuning up of chromism, luminescence in cadmium-viologen complexes through polymorphism strategy: Inkless erasable printing application 通过多态性策略提高镉-viologen 复合物的色度和发光性能：无墨可擦除印刷应用

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-06-15 DOI: 10.1016/j.cclet.2024.110123

{"title":"Tuning up of chromism, luminescence in cadmium-viologen complexes through polymorphism strategy: Inkless erasable printing application","authors":"","doi":"10.1016/j.cclet.2024.110123","DOIUrl":"10.1016/j.cclet.2024.110123","url":null,"abstract":"<div><div>In our work, polymorphism strategy has been successfully applied to tune up chromism and luminescence properties of viologen-based materials. Two polymorphs of viologen-based complexes of α-CdBr2(PHSQ)2(H2O)2 (1) and β-CdBr2(PHSQ)2(H2O)2 (2) (PHSQ = N-(4-sulfophenyl)-4,4′-bipyridinium) were synthesized by changing the solvent. They can both respond to UV light and electricity in the manner of chromism visible to the naked eye and the coloration states have good reversibility, through which an inkless erasable printing model has been established. But the coloration contrast of 1 is higher compared to 2. Meanwhile, they both exhibit photoluminescence properties and the intensity of 1 is twice that of 2, which is accompanied by photoquenching upon continuous UV light irradiation. The only divergence of disordered/ordered O atoms in the two crystalline compounds leads to significantly different chromic and luminescent properties. Further explorations simultaneously demonstrate that the different chromic performance between 1 and 2 should attribute to the alteration of stimulus-induced (light/ electricity) electron transfer channels caused by the ordered/disordered O atoms in the complexes, which is achieved through C<img>H···O and O<img>H···O interactions to change crystal arrangement and structural rigidity, thus affect luminescent properties.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 1","pages":"Article 110123"},"PeriodicalIF":9.4,"publicationDate":"2024-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141397561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

The study of antibacterial activity of cationic poly(β-amino ester) regulating by amphiphilic balance 通过两亲平衡调节阳离子聚（β-氨基酯）抗菌活性的研究

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-06-13 DOI: 10.1016/j.cclet.2024.110118

Chong Liu , Ling Li , Jiahui Gao , Yanwei Li , Nazhen Zhang , Jing Zang , Cong Liu , Zhaopei Guo , Yanhui Li , Huayu Tian

{"title":"The study of antibacterial activity of cationic poly(β-amino ester) regulating by amphiphilic balance","authors":"Chong Liu , Ling Li , Jiahui Gao , Yanwei Li , Nazhen Zhang , Jing Zang , Cong Liu , Zhaopei Guo , Yanhui Li , Huayu Tian","doi":"10.1016/j.cclet.2024.110118","DOIUrl":"10.1016/j.cclet.2024.110118","url":null,"abstract":"<div><div>It is well known that cationic polymers have excellent antimicrobial capacity accompanied with high biotoxicity, to reduce biotoxicity needs to decrease the number of cationic groups on polymers, which will influence antimicrobial activity. It is necessary to design a cationic polymer mimic natural antimicrobial peptide with excellent antibacterial activity and low toxicity to solve the above dilemma. Here, we designed and prepared a series of cationic poly(β-amino ester)s (PBAEs) with different cationic contents, and introducing hydrophobic alkyl chain to adjust the balance between antimicrobial activity and biotoxicity to obtain an ideal antimicrobial polymer. The optimum one of synthesized PBAE (hydrophilic cationic monomer :hydrophobic monomer = 5:5) was screened by testing cytotoxicity and minimum inhibitory concentration (MIC), which can effectively kill S. aureus and E. coli with PBAE concentration of 15 μg/mL by a spread plate bacteriostatic method and dead and alive staining test. The way of PBAE killing bacterial was destroying the membrane like natural antimicrobial peptide observed by scanning electron microscopy (SEM). In addition, PBAE did not exhibit hemolysis and cytotoxicity. In particular, from the result of animal tests, the PBAE was able to promote healing of infected wounds from removing mature S. aureus and E. coli on the surface of infected wound. As a result, our work offers a viable approach for designing antimicrobial materials, highlighting the significant potential of PBAE polymers in the field of biomedical materials.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 2","pages":"Article 110118"},"PeriodicalIF":9.4,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141414694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Photocatalytic Minisci-type multicomponent reaction for the synthesis of 1-(halo)alkyl-3-heteroaryl bicyclo[1.1.1]pentanes 用于合成 1-(卤代)烷基-3-杂芳基双环[1.1.1]戊烷的光催化迷你型多组分反应

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-06-13 DOI: 10.1016/j.cclet.2024.110115

Rong-Nan Yi , Wei-Min He

引用次数: 0

Organic pollutant sensing for human health based on carbon dots 基于碳点的人体健康有机污染物传感技术

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-06-13 DOI: 10.1016/j.cclet.2024.110117

引用次数: 0

Construction of mesoporous silica-implanted tungsten oxides for selective acetone gas sensing 构建用于选择性丙酮气体传感的介孔二氧化硅植入钨氧化物

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-06-12 DOI: 10.1016/j.cclet.2024.110111

{"title":"Construction of mesoporous silica-implanted tungsten oxides for selective acetone gas sensing","authors":"","doi":"10.1016/j.cclet.2024.110111","DOIUrl":"10.1016/j.cclet.2024.110111","url":null,"abstract":"<div>As a key biomarker for noninvasive diagnosis of diabetes, the selective detection of trace acetone in exhaled gas using a portable and low-cost device remains a great challenge. Semiconductor metal oxide (SMO) based gas sensors have drawn signification attention due to their potential in miniaturization, user-friendliness, high cost-effectiveness and selective real-time detection for noninvasive clinical diagnosis. Herein, we propose a one-pot solvent evaporation induced tricomponent co-assembly strategy to design a novel ordered mesoporous SMO of silica-implanted WO3 (SiO2/WO3) as sensing materials for trace acetone detection. The controlled co-assembly of silicon and tungsten precursors and amphiphilic diblock copolymer poly(ethylene oxide)-block-polystyrene (PEO-b-PS), and the subsequent thermal treatment enable the local lattice disorder of WO3 induced by the amorphous silica and the formation of ordered mesoporous SiO2/WO3 hybrid walls with a unique metastable ε-phase WO3 framework. The obtained mesoporous SiO2/WO3 composites possess highly crystalline framework with large uniform pore size (12.0–13.3 nm), high surface area (99–113 m2/g) and pore volume (0.17–0.23 cm3/g). Typically, the as-fabricated gas sensor based on mesoporous 2.5 %SiO2/WO3 exhibits rapid response/recovery rate (5/17 s), superior sensitivity (Rair/Rgas = 105 for 50 ppm acetone), as well as high selectivity towards acetone. The limit of detection is as low as 0.25 ppm, which is considerably lower than the thresh value of acetone concentration (>1.1 ppm) in the exhaled breath of diabetic patients, demonstrating its great prospect in real-time monitoring in diabetes diagnosis. Moreover, the mesoporous 2.5 %SiO2/WO3 sensor is integrated into a wireless sensing module connected to a smart phone, providing a convenient real-time detection of acetone.</div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"35 11","pages":"Article 110111"},"PeriodicalIF":9.4,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141394588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Electro-reductive carboxylation of CCl bonds in unactivated alkyl chlorides and polyvinyl chloride with CO2 未活化烷基氯化物和聚氯乙烯中的 C Cl 键与 CO2 的电还原羧化反应

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-06-08 DOI: 10.1016/j.cclet.2024.110104

引用次数: 0

Recent progress on surface chemistry II: Property and characterization 表面化学的最新进展二：性质与表征

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-06-08 DOI: 10.1016/j.cclet.2024.110100

引用次数: 0

IFC - Editorial Board/ Publication info 国际金融公司 - 编辑委员会/出版信息

IF 9.1 1区化学

Chinese Chemical Letters Pub Date : 2024-06-08 DOI: 10.1016/S1001-8417(24)00494-7

引用次数: 0

IFC - Editorial Board/ Publication info 国际金融公司 - 编辑委员会/出版信息

IF 9.1 1区化学

Chinese Chemical Letters Pub Date : 2024-06-06 DOI: 10.1016/S1001-8417(24)00464-9

引用次数: 0