Chinese Chemical Letters最新文献_第10页

Efficient solution-processed near-infrared organic light-emitting diodes with a binary-mixed electron transport layer

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-27 DOI: 10.1016/j.cclet.2024.110511

Haowen Shang , Yujie Yang , Bingjie Xue , Yikai Wang , Zhiyi Su , Wenlong Liu , Youzhi Wu , Xinjun Xu

{"title":"Efficient solution-processed near-infrared organic light-emitting diodes with a binary-mixed electron transport layer","authors":"Haowen Shang , Yujie Yang , Bingjie Xue , Yikai Wang , Zhiyi Su , Wenlong Liu , Youzhi Wu , Xinjun Xu","doi":"10.1016/j.cclet.2024.110511","DOIUrl":"10.1016/j.cclet.2024.110511","url":null,"abstract":"<div><div>A binary-mixed electron transport layer (ETL) has been reported for constructing solution-processable near-infrared organic light-emitting diodes (NIR OLEDs). Relative to the single-component ETL, the binary-mixed ETL composed of PDINN:TPBi can enhance the carrier transport capacity, reduce device impedance, and weaken fluorescence quenching of the emitting layer. By carefully selecting an appropriate luminescent material Y5 (a nonfullerene electron acceptor in organic solar cells) and precisely fine-tuning the molecular aggregation in active layer using a mixed solvent, the morphology is optimized and luminescence performance is enhanced, resulting in efficient NIR OLEDs with an emission peak at 890 nm. The experiment showcases a Y5-based near-infrared OLED with a maximum radiance of 34.9 W sr<sup>-1</sup> m<sup>-2</sup> and a maximum external quantum efficiency of 0.50%, which is among the highest values reported for non-doped fluorescent NIR OLEDs with an emission peak over 850 nm.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 4","pages":"Article 110511"},"PeriodicalIF":9.4,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149445","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

Transdermal delivery of amphotericin B using deep eutectic solvents for antifungal therapy

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-26 DOI: 10.1016/j.cclet.2024.110508

Bing Xie , Qi Jiang , Fang Zhu , Yaoyao Lai , Yueming Zhao , Wei He , Pei Yang

{"title":"Transdermal delivery of amphotericin B using deep eutectic solvents for antifungal therapy","authors":"Bing Xie , Qi Jiang , Fang Zhu , Yaoyao Lai , Yueming Zhao , Wei He , Pei Yang","doi":"10.1016/j.cclet.2024.110508","DOIUrl":"10.1016/j.cclet.2024.110508","url":null,"abstract":"<div><div><em>Candida albicans</em> is one of the most common pathogens causing invasive fungal infections, with a mortality rate of up to 20 %–50 %. Amphotericin B (AmB), a biopharmaceutics classification system (BCS) IV drug, significantly inhibits <em>Candida albicans</em>. AmB is primarily administered <em>via</em> oral and intravenous infusion, but severe infusion adverse effects, nephrotoxicity, and potential hepatotoxicity limit its clinical application. Deep eutectic solvents (DESs), with excellent solubilization ability and skin permeability, are attractive for transdermal delivery. Herein, we used DESs to deliver AmB for antifungal therapy transdermally. We first prepared and characterized DESs with different stoichiometric ratios of choline (Ch) and geranate (Ge). DESs increased the solubility of AmB by a thousand-fold. <em>In vitro</em> and <em>in vivo</em>, skin permeation studies indicated that DES<sub>1:2</sub> (Ch and Ge in 1:2 ratio) had the most outstanding penetration and delivered fluorescence dye to the dermis layer. Then, DES<sub>1:2</sub>-AmB was prepared and <em>in vitro</em> antifungal tests demonstrated that DES<sub>1:2</sub>-AmB had superior antifungal effects compared to AmB and DES<sub>1:2</sub>. Furthermore, DES<sub>1:2</sub>-AmB was skin-irritating and biocompatible. In conclusion, DES<del>-</del>AmB provides a new and effective therapeutic solution for fungal infections.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 5","pages":"Article 110508"},"PeriodicalIF":9.4,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511883","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

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 (W<sub>4</sub>MoO<sub>3</sub> 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 Na<sub>2</sub>SO<sub>4</sub>, W<sub>4</sub>MoO<sub>3</sub> NWs rich in O vacancies (CTAB-D-W<sub>4</sub>MoO<sub>3</sub>) achieve a large NH<sub>3</sub> yield of 60.77 µg h<sup>-1</sup> mg<sup>-1</sup><sub>cat.</sub> at -0.70 V <em>vs.</em> RHE and a high faradaic efficiency of 56.42 % at -0.60 V, much superior to the W<sub>4</sub>MoO<sub>3</sub> NWs deficient in oxygen vacancies (20.26 µg h<sup>-1</sup> mg<sup>-1</sup><sub>cat.</sub> and 17.1 % at -0.70 V <em>vs.</em> RHE). Meanwhile, W<sub>4</sub>MoO<sub>3</sub> NWs rich in O-vacancies also show high electrochemical stability. Density functional theory (DFT) calculations present that O vacancies in CTAB-D-W<sub>4</sub>MoO<sub>3</sub> 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}

引用次数: 0

Polyvinyl alcohol fiber with enhanced strength and modulus and intense cyan fluorescence based on covalently functionalized graphene quantum dots 基于共价官能化石墨烯量子点的具有更高强度和模量以及更强青色荧光的聚乙烯醇纤维

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-26 DOI: 10.1016/j.cclet.2024.110510

Manman Ou, Yunjian Zhu, Jiahao Liu, Zhaoxuan Liu, Jianjun Wang, Jun Sun, Chuanxiang Qin, Lixing Dai

{"title":"Polyvinyl alcohol fiber with enhanced strength and modulus and intense cyan fluorescence based on covalently functionalized graphene quantum dots","authors":"Manman Ou, Yunjian Zhu, Jiahao Liu, Zhaoxuan Liu, Jianjun Wang, Jun Sun, Chuanxiang Qin, Lixing Dai","doi":"10.1016/j.cclet.2024.110510","DOIUrl":"10.1016/j.cclet.2024.110510","url":null,"abstract":"<div><div>In this study, we proposed a novel and efficient way to strengthen polyvinyl alcohol (PVA) fiber using graphene quantum dots (GQDs). PVA molecular chains were grafted onto the surface of GQDs through Friedel-Crafts alkylation reaction to obtain functionalized GQDs (f-GQDs), and PVA/f-GQDs composite fiber was successfully prepared by wet spinning and post-treatment. The tensile strength and Young's modulus of the composite fiber reached up to 1229.24 MPa and 35.36 GPa which were approximately twice and 4 times those of the pure PVA fiber, respectively. Moreover, the composite fiber was demonstrated excellent resistance to solvents. In addition, the PVA/f-GQDs composite fiber showed intense and uniform cyan fluorescence, meanwhile, it could maintain stable solid-state fluorescence in acid and alkali solutions and particularly after long-term immersion in water (1 month). This study proposes a promising route for obtaining high-performance conventional fibers with some new functions.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 2","pages":"Article 110510"},"PeriodicalIF":9.4,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698950","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

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}

引用次数: 0

High-temperature-stable RRAMs with well-defined thermal effect mechanisms enable by engineering of robust 2D <100>-oriented organic-inorganic hybrid perovskites

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-24 DOI: 10.1016/j.cclet.2024.110495

Weihong Ding, Kaiyue Song, Xianglong Li, Xiaoxia Sun

{"title":"High-temperature-stable RRAMs with well-defined thermal effect mechanisms enable by engineering of robust 2D <100>-oriented organic-inorganic hybrid perovskites","authors":"Weihong Ding, Kaiyue Song, Xianglong Li, Xiaoxia Sun","doi":"10.1016/j.cclet.2024.110495","DOIUrl":"10.1016/j.cclet.2024.110495","url":null,"abstract":"<div><div>The exploitation of organic-inorganic hybrid perovskites (OIHPs) as active layer materials for typical sandwich-structured resistive memories has attracted widespread interest due to the property of low power consumption and fast switching. However, the inherent thermal instability of perovskites limits the application of OIHPs-based resistive memories under extreme conditions, while the influence of thermal effects on their resistance change characteristics remains unclear. Herein, a novel 2D <100>-oriented high-temperature resistant OIHP [(BIZ-H)<sub>2</sub>(PbBr<sub>4</sub>)]<sub><em>n</em></sub> (BIZ = benzimidazole) is prepared as an active layer material to fabricate FTO/[(BIZ-H)<sub>2</sub>(PbBr<sub>4</sub>)]<sub><em>n</em></sub>/Ag resistive memory with excellent thermal reproducibility and stability up to 120 °C. The increase in temperature leads to a decrease in the PbBr<sub>6</sub> octahedral distortion in the crystal structure, an increase in hydrogen bonding between the (BIZ-H)<sup>+</sup> cation and the (PbBr<sub>4</sub>)<sub><em>n</em></sub><sup>2<em>n</em>-</sup> layer, and a shortening of the spacing of the inorganic layers, which is found to result in the creation and predominance of thermally activated traps with increasing temperature. This work provides a new direction for the next generation of OIHPs-based resistive memories with high-temperature tolerance.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 4","pages":"Article 110495"},"PeriodicalIF":9.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149441","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

Efficient synthesis of nano high-entropy compounds for advanced oxygen evolution reaction

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-24 DOI: 10.1016/j.cclet.2024.110498

Genxiang Wang , Linfeng Fan , Peng Wang , Junfeng Wang , Fen Qiao , Zhenhai Wen

{"title":"Efficient synthesis of nano high-entropy compounds for advanced oxygen evolution reaction","authors":"Genxiang Wang , Linfeng Fan , Peng Wang , Junfeng Wang , Fen Qiao , Zhenhai Wen","doi":"10.1016/j.cclet.2024.110498","DOIUrl":"10.1016/j.cclet.2024.110498","url":null,"abstract":"<div><div>Developing efficient electrocatalysts for oxygen evolution reaction (OER) is imperative to enhance the overall efficiency of electrolysis systems and rechargeable metal-air batteries operating in aqueous solutions. High-entropy materials, featured with their distinctive multi-component properties, have found extensive application as catalysts in electrochemical energy storage and conversion devices. However, synthesizing nanostructured high-entropy compounds under mild conditions poses a significant challenge due to the difficulty in overcoming the immiscibility of multiple metallic constituents. In this context, the current study focuses on the synthesis of an array of nano-sized high entropy sulfides tailored for OER <em>via</em> a facile precursor pyrolysis method at low temperature. The representative compound, FeCoNiCuMnS<sub>x</sub>, demonstrates remarkable OER performance, achieving a current density of 10 mA/cm<sup>2</sup> at an overpotential of merely 220 mV and excellent stability with constant electrolysis at 100 mA/cm<sup>2</sup> for over 400 h. The <em>in-situ</em> formed metal (oxy)hydroxide has been confirmed as the real active sites and its exceptional performance can be primarily attributed to the synergistic effects arising from its multiple components. Furthermore, the synthetic methodology presented here is versatile and can be extended to the preparation of high entropy phosphides, which also present favorable OER performance. This research not only introduces promising non-noble electrocatalysts for OER but also offers a facile approach to expand the family of nano high-entropy materials, contributing significantly to the field of electrochemical energy conversion.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 4","pages":"Article 110498"},"PeriodicalIF":9.4,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098704","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

High quantum yield yellow emission carbon dots for the construction of blue light blocking films 用于构建蓝光阻挡薄膜的高量子产率黄色发射碳点

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-24 DOI: 10.1016/j.cclet.2024.110497

Liwen Wang , Boyang Wang , Siyu Lu , Shubo Lv , Xiaoli Qu

引用次数: 0

Synthesis of organoboron compounds via heterogeneous C–H and C–X borylation

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-24 DOI: 10.1016/j.cclet.2024.110503

Shuai Tang , Zian Wang , Mengyi Zhu, Xinyun Zhao, Xiaoyun Hu, Hua Zhang

引用次数: 0

Hyperforatone A, the 1,8-seco rearranged polycyclic polyprenylated acylphloroglucinol with a unique bicyclo[5.4.0]undecane core from Hypericum perforatum

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-09-20 DOI: 10.1016/j.cclet.2024.110478

Wu-Yang Liu , Xin-Xiang Lei , Wen-Ji Wang , Jun-Mian Tian , Yu-Qi Gao , Jin-Ming Gao

引用次数: 0