Chinese Chemical Letters最新文献_第2页

“Super-heterojunctioned” thermoelectric polymers "超级热结 "热电聚合物

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-30 DOI: 10.1016/j.cclet.2024.110523

Hanying Li , Wee-Liat Ong

引用次数: 0

Oxygen vacancies-rich molybdenum tungsten oxide nanowires as a highly active nitrogen fixation electrocatalyst 富氧空位钼钨氧化物纳米线作为高活性固氮电催化剂

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-26 DOI: 10.1016/j.cclet.2024.110491

Jincheng Zhang , Mengjie Sun , Jiali Ren , Rui Zhang, Min Ma, Qingzhong Xue, Jian Tian

{"title":"Oxygen vacancies-rich molybdenum tungsten oxide nanowires as a highly active nitrogen fixation electrocatalyst","authors":"Jincheng Zhang , Mengjie Sun , Jiali Ren , Rui Zhang, Min Ma, Qingzhong Xue, Jian Tian","doi":"10.1016/j.cclet.2024.110491","DOIUrl":"10.1016/j.cclet.2024.110491","url":null,"abstract":"<div><div>Herein, vacancy engineering is utilized reasonably to explore molybdenum tungsten oxide nanowires (W4MoO3 NWs) rich in O-vacancies as an advanced electrochemical nitrogen reduction reaction (eNRR) electrocatalyst, realizing further enhancement of NRR performance. In 0.1 mol/L Na2SO4, W4MoO3 NWs rich in O vacancies (CTAB-D-W4MoO3) achieve a large NH3 yield of 60.77 µg h-1 mg-1cat. at -0.70 V vs. RHE and a high faradaic efficiency of 56.42 % at -0.60 V, much superior to the W4MoO3 NWs deficient in oxygen vacancies (20.26 µg h-1 mg-1cat. and 17.1 % at -0.70 V vs. RHE). Meanwhile, W4MoO3 NWs rich in O-vacancies also show high electrochemical stability. Density functional theory (DFT) calculations present that O vacancies in CTAB-D-W4MoO3 reduce the energy barrier formed by the intermediate of *N-NH, facilitate the activation and further hydrogenation of *N-N, promote the NRR process, and improve NRR activity.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 1","pages":"Article 110491"},"PeriodicalIF":9.4,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592842","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}

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Engineered iron-based metal-organic frameworks nanoplatforms for cancer theranostics: A mini review 用于癌症治疗的铁基金属有机框架纳米平台：微型综述

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-25 DOI: 10.1016/j.cclet.2024.110501

Yunlong Li , Xinyu Zhang , Shuang Liu , Chunsheng Li , Qiang Wang , Jin Ye , Yong Lu , Jiating Xu

{"title":"Engineered iron-based metal-organic frameworks nanoplatforms for cancer theranostics: A mini review","authors":"Yunlong Li , Xinyu Zhang , Shuang Liu , Chunsheng Li , Qiang Wang , Jin Ye , Yong Lu , Jiating Xu","doi":"10.1016/j.cclet.2024.110501","DOIUrl":"10.1016/j.cclet.2024.110501","url":null,"abstract":"<div><div>Up to now, numerous emerging methods of cancer treatment including chemodynamic therapy, photothermal therapy, photodynamic therapy, sonodynamic therapy, immunotherapy and chemotherapy have rapidly entered a new stage of development. However, the single treatment mode is often constrained by the complex tumor microenvironment. Recently, the nanomaterials and nanomedicine have emerged as promising avenues to overcome the limitation in cancer theranostics. Especially, metal-organic frameworks (MOFs) have gained considerable interests in cancer therapy because of their customizable morphologies, easy functionalization, large specific surface area, and good biocompatibility. Among these MOFs, iron-based MOFs (Fe-MOFs) are particularly promising for cancer treatment due to their properties as nano-photosensitizers, peroxidase-like activity, bioimaging contrast capabilities, and biodegradability. Utilizing their structural regularity and synthetic tunability, Fe-MOFs can be engineered to incorporate organic molecules or other inorganic nanoparticles, thereby creating multifunctional nanoplatforms for single or combined theranostic modes. Herein, the minireview focuses on the recent advancements of the Fe-MOFs-based nanoplatforms for self-enhanced imaging and treatment at tumor sites. Furthermore, the clinical research development of Fe-MOFs-based nanoplatforms is discussed, addressing key challenges and innovations for the future. Our review aims to provide novice researchers with a foundational understanding of advanced cancer theranostic modes and promote their clinical applications through the modification of Fe-MOFs.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 2","pages":"Article 110501"},"PeriodicalIF":9.4,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657160","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}

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Recent advances in semi-heterogenous photocatalysis in organic synthesis 有机合成中半同源光催化技术的最新进展

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-18 DOI: 10.1016/j.cclet.2024.110469

Jia-Cheng Hou , Wei Cai , Hong-Tao Ji , Li-Juan Ou , Wei-Min He

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Corrigendum to ‘Fluorescence immunoassay based on alkaline phosphatase-induced in situ generation of fluorescent non-conjugated polymer dots’ [Chinese Chemical Letters 34 (2023) 107672] 基于碱性磷酸酶诱导原位生成荧光非共轭聚合物点的荧光免疫测定"[中国化学快报 34 (2023) 107672]勘误表

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-17 DOI: 10.1016/j.cclet.2024.109881

Donghui Wu , Qilin Zhao , Jian Sun , Xiurong Yang

引用次数: 0

Swelling and erosion assisted sustained release of tea polyphenol from antibacterial ultrahigh molecular weight polyethylene for joint replacement 抗菌超高分子量聚乙烯中茶多酚的膨胀和侵蚀辅助持续释放，用于关节置换术

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-15 DOI: 10.1016/j.cclet.2024.110468

Yue Ren , Kang Li , Yi-Zi Wang , Shao-Peng Zhao , Shu-Min Pan , Haojie Fu , Mengfan Jing , Yaming Wang , Fengyuan Yang , Chuntai Liu

{"title":"Swelling and erosion assisted sustained release of tea polyphenol from antibacterial ultrahigh molecular weight polyethylene for joint replacement","authors":"Yue Ren , Kang Li , Yi-Zi Wang , Shao-Peng Zhao , Shu-Min Pan , Haojie Fu , Mengfan Jing , Yaming Wang , Fengyuan Yang , Chuntai Liu","doi":"10.1016/j.cclet.2024.110468","DOIUrl":"10.1016/j.cclet.2024.110468","url":null,"abstract":"<div><div>The considerable hazard posed by periprosthetic joint infections underlines the urgent need for the rapid advancement of in-situ drug delivery systems within joint materials. However, the pursuit of sustained antibacterial efficacy remains a formidable challenge. In this context, we proposed a novel strategy that leverages swelling and erosion mechanisms to facilitate drug release of drug-loaded ultrahigh molecular weight polyethylene (UHMWPE), thereby ensuring its long-lasting antibacterial performance. Polyethylene oxide (PEO), a hydrophilic polymer with fast hydrating ability and high swelling capacity, was incorporated in UHMWPE alongside the antibacterial tea polyphenol (epigallocatechin gallate, EGCG as representative). The swelling of PEO enhanced water infiltration into the matrix, while the erosion of PEO balanced the release of the encapsulated EGCG, resulting in a steady release. The behavior was supported by the EGCG release profiles and the corresponding fitted release kinetic models. As demonstrated by segmented antibacterial assessments, the antibacterial efficiency was enhanced 2 to 3 times in the PEO/EGCG/UHMWPE composite compared to that of EGCG/UHMWPE. Additionally, the PEO/EGCG/UHMWPE composite exhibited favorable biocompatibility and mechanical performance, making it a potential candidate for the development of drug-releasing joint implants to combat prosthetic bacterial infections.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 2","pages":"Article 110468"},"PeriodicalIF":9.4,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657119","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

Structuring MoO3-polyoxometalate hybrid superstructures to boost electrocatalytic hydrogen evolution reaction 构建 MoO3-聚氧化金属酸盐混合超结构，促进电催化氢气进化反应

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-15 DOI: 10.1016/j.cclet.2024.110467

Bowen Li, Ting Wang, Ming Xu, Yuqi Wang, Zhaoxing Li, Mei Liu, Wenjing Zhang, Ming Feng

{"title":"Structuring MoO3-polyoxometalate hybrid superstructures to boost electrocatalytic hydrogen evolution reaction","authors":"Bowen Li, Ting Wang, Ming Xu, Yuqi Wang, Zhaoxing Li, Mei Liu, Wenjing Zhang, Ming Feng","doi":"10.1016/j.cclet.2024.110467","DOIUrl":"10.1016/j.cclet.2024.110467","url":null,"abstract":"<div><div>Improving the surface atoms utilization efficiency of catalysts is extremely important for large-scale H2 production by electrochemical water splitting, but it remains a great challenge. Herein, we reported two kinds of MoO3-polyoxometalate hybrid nanobelt superstructures (MoO3-POM HNSs, POM = PW12O40 and SiW12O40) using a simple hydrothermal method. Such superstructure with highly uniform nanoparticles as building blocks can expose more surface atoms and emanate increased specific surface area. The incorporated POMs generated abundant oxygen vacancies, improved the electronic mobility, and modulated the surface electronic structure of MoO3, allowing to optimize the H* adsorption/desorption and dehydrogenation kinetics of catalyst. Notably, the as-prepared MoO3-PW12O40 HNSs electrodes not only displayed the low overpotentials of 108 mV at 10 mA/cm2 current density in 0.5 mol/L H2SO4 electrolyte but also displayed excellent long-term stability. The hydrogen evolution reaction (HER) performance of MoO3-POM superstructures is significantly better than that of corresponding bulk materials MoO3@PW12O40 and MoO3@SiW12O40, and the overpotentials are about 8.3 and 4.9 times lower than that of single MoO3. This work opens an avenue for designing highly surface-exposed catalysts for electrocatalytic H2 production and other electrochemical applications.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 2","pages":"Article 110467"},"PeriodicalIF":9.4,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656934","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

Recent progress on non-metallic carbon nitride for the photosynthesis of H2O2: Mechanism, modification and in-situ applications 用于 H2O2 光合作用的非金属氮化碳的最新进展：机理、改性和原位应用

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-14 DOI: 10.1016/j.cclet.2024.110457

Hao Lv , Zhi Li , Peng Yin , Ping Wan , Mingshan Zhu

{"title":"Recent progress on non-metallic carbon nitride for the photosynthesis of H2O2: Mechanism, modification and in-situ applications","authors":"Hao Lv , Zhi Li , Peng Yin , Ping Wan , Mingshan Zhu","doi":"10.1016/j.cclet.2024.110457","DOIUrl":"10.1016/j.cclet.2024.110457","url":null,"abstract":"<div><div>Photocatalytic hydrogen peroxide (H2O2) production has been considered as a promising strategy for H2O2 synthesis due to its environmentally friendly. Among various photocatalysts, carbon nitride-based materials are excellent candidates for H2O2 production because of their excellent visible-light response, low cost and high stability. In this review, we summarize in detail the research progress on the photocatalytic production of H2O2 by carbon nitride. First, we summarize the basic principles of photocatalysis and photocatalytic H2O2 production. Second, the classification and modification methods of carbon-nitride-based materials are discussed, including morphology modulation, noble metal loading, defect control, heterojunction regulation, molecular structure engineering and elemental doping. Finally, the different in-situ applications of H2O2 via photosynthesis were discussed, including disinfection and antibiotic resistant genes degradation, organic pollutants degradation, medical applications and fine chemical synthesis. This review brings great promise for in-situ H2O2 photosynthesis, which is expected to serve as a key component in future applications.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 1","pages":"Article 110457"},"PeriodicalIF":9.4,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592841","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}

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EDA-complexes-enabled photochemical synthesis of α-amino acids with imines and tetrabutylammonium oxalate 用亚胺和草酸四丁基铵光化学合成α-氨基酸的 EDA 复合物

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-14 DOI: 10.1016/j.cclet.2024.110446

Min-Hang Zhou, Jun Jiang, Wei-Min He

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Modular miniaturized synthesis and in situ biological evaluation facilitate rapid discovery of potent MraY inhibitors as antibacterial agents 模块化微型合成和原位生物评估有助于快速发现作为抗菌剂的强效 MraY 抑制剂

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-12 DOI: 10.1016/j.cclet.2024.110455

Mianling Yang , Meehyein Kim , Peng Zhan

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