Chinese Journal of Chemistry最新文献

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Ultrathin PdAu Nanowires with High Alloying Degree for the Direct Oxidation of Methane to C1 Oxygenates 具有高合金化度的超细钯金纳米线用于将甲烷直接氧化为 C1 氧化合物
IF 5.5 1区 化学
Chinese Journal of Chemistry Pub Date : 2024-08-21 DOI: 10.1002/cjoc.202400591
Linhui Tan, Yi Shi, Yueshan Xu, Xue Zhang, Daoxiong Wu, Zhitong Wang, Juanxiu Xiao, Huan Wen, Jing Li, Xinlong Tian, Peilin Deng
{"title":"Ultrathin PdAu Nanowires with High Alloying Degree for the Direct Oxidation of Methane to C1 Oxygenates","authors":"Linhui Tan,&nbsp;Yi Shi,&nbsp;Yueshan Xu,&nbsp;Xue Zhang,&nbsp;Daoxiong Wu,&nbsp;Zhitong Wang,&nbsp;Juanxiu Xiao,&nbsp;Huan Wen,&nbsp;Jing Li,&nbsp;Xinlong Tian,&nbsp;Peilin Deng","doi":"10.1002/cjoc.202400591","DOIUrl":"10.1002/cjoc.202400591","url":null,"abstract":"<div>\u0000 \u0000 <p>The direct oxidation of methane (CH<sub>4</sub>) into high-valued C1 oxygenates production has garnered increased attention in effectively using vast CH<sub>4</sub> and alleviating the global energy crisis. However, due to the high cleavage energy of C—H bond and low polarity of CH<sub>4</sub> molecule, it is difficult to activate the first C—H bond. Furthermore, C1 oxygenates are readily inclined to be oxidized to CO<sub>2</sub>, because their weaker C—H bond comparing with CH<sub>4</sub> molecule, resulting in poor selectivity. Herein, we designed ultrathin Pd<sub><i>x</i></sub>Au<sub><i>y</i></sub> alloy NWs supported on ZSM-5 (Z-5) to investigate the direct oxidation of CH<sub>4</sub> to high value-added oxygenate under mild conditions. By precisely adjusting the molar ratio of Pd/Au and alloying degree, Pd<sub>9</sub>Au<sub>1</sub>NWs/Z-5 showed an excellent yield of 11.57 mmol·g<sup>–l</sup>·h<sup>–1</sup> and the outstanding selectivity of 95.1% for C1 oxygenates (CH<sub>3</sub>OH, CH<sub>3</sub>OOH and HCOOH). The <i>in-situ</i> spectroscopic and mechanism analysis proved that the enhanced catalytic performance of Pd<sub>9</sub>Au<sub>1</sub>NWs/Z-5 was ascribed to the stable one-dimensional nanostructure and the strong synergy effect with high alloying PdAu, which could increase the adsorption capacity of CH<sub>4</sub> molecules on Pd atoms to promote the CH<sub>4</sub> conversion. This work offers valuable insights into the design concept of high-efficient catalysts and the structure-activity relationship for the direct oxidation of CH<sub>4</sub>.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 23","pages":"2999-3005"},"PeriodicalIF":5.5,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195526","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
Inside Cover Picture 封面内页图片
IF 5.5 1区 化学
Chinese Journal of Chemistry Pub Date : 2024-08-15 DOI: 10.1002/cjoc.202490182
{"title":"Inside Cover Picture","authors":"","doi":"10.1002/cjoc.202490182","DOIUrl":"https://doi.org/10.1002/cjoc.202490182","url":null,"abstract":"<p>3,4-Dihydroquinazoline frameworks which have frequently been encountered in natural products and bioactive molecules, prompted the development of creative pharmaceuticals owing to their prominent biological properties, such as trypanothione reductase inhibitor, Hepatitis B virus inhibitive activities, anticancer activities, <i>etc</i>. <i>De novo</i> assembling of chiral 3,4-dihydroquinazolines from simple chemical feedstocks via multicomponent reactions remains several great obstacles, and this scenario is capable of the divergent and flexible modulation of these skeletons which is urgently required for drug discovery. More details are discussed in the article by Yu <i>et al</i>. on page 2140—2146.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 18","pages":"2122"},"PeriodicalIF":5.5,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cjoc.202490182","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141986040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Earth-Abundant Nickel-Catalyzed Asymmetric Hydrogenation† 地球富集镍催化的不对称氢化反应† (Earth-Abundant Nickel-Catalyzed Asymmetric Hydrogenation†)
IF 5.5 1区 化学
Chinese Journal of Chemistry Pub Date : 2024-08-13 DOI: 10.1002/cjoc.202400352
Peng Wang, Zhao-Lin He, Zi-Fei Xia, Jun Wei, Xiu-Qin Dong
{"title":"Earth-Abundant Nickel-Catalyzed Asymmetric Hydrogenation†","authors":"Peng Wang,&nbsp;Zhao-Lin He,&nbsp;Zi-Fei Xia,&nbsp;Jun Wei,&nbsp;Xiu-Qin Dong","doi":"10.1002/cjoc.202400352","DOIUrl":"10.1002/cjoc.202400352","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Comprehensive Summary&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Transition metal-catalyzed asymmetric hydrogenation is an efficient and direct synthetic method to access chiral compounds, which features simplicity, easy working-up process, and high atomic economy. It typically relies on precious transition metal catalytic systems, including ruthenium, rhodium, iridium and palladium, which always face the difficulties of limited resources, high cost, and environmental contamination. Therefore, great efforts were made to apply earth-abundant, low (non-)toxic, and environmentally friendly transition metals, such as iron, cobalt, nickel and copper, to the asymmetric hydrogenation in the past decades, and some considerable breakthroughs have been obtained. In this review, we mainly summarized some recent research progress of nickel-catalyzed asymmetric hydrogenation of prochiral unsaturated molecules, including olefins, imines and ketones. And continuous development of chiral nickel catalytic systems and the application of them into challenging asymmetric hydrogenation is prospected in the future.&lt;/p&gt;\u0000 \u0000 &lt;p&gt;\u0000 &lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Key Scientists&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Transition metal-catalyzed asymmetric hydrogenation has been regarded as an important and direct approach to access chiral molecules. The first example of homogeneous catalytic asymmetric hydrogenation was developed by Knowles and Horner in 1968, respectively. In 1971, Kagan developed privileged chiral DIOP ligand for asymmetric hydrogenation. Halpern and Brown made deep studies on the Rh-catalyzed asymmetric hydrogenation in 1977, respectively. Noyori developed a powerful and privileged chiral BINAP ligand in 1980. Owing to Knowles and Noyori's great contribution in the field of catalytic asymmetric hydrogenation, they were awarded the Nobel Prize in Chemistry in 2001. In 1984, Ohkubo developed pioneering earth-abundant transition metal Ni-catalyzed asymmetric hydrogenation of ethyl α-methylcrotonate. A great many scientists made tremendous contribution to the development of chiral privileged ligands, such as, Bosnich, Kumada, Giongo, Takaya, Miyashima, Achiwa, Burk, Pflaltz, Chan, X. Zhang, Imamoto, Zhou, Genet, Sannicolo, Ding, Hoge, W. Zhang, Z. Zhang, Tang, these ligands owned wide application in the catalytic asymmetric hydrogenation. In addition, Zhou, Fan made deep investigation on the asymmetric hydrogenation of challenging aromatic heterocyclic compounds. Owing to the great importance of the development of the asymmetric (transfer) hydrogenation promoted by cheap transition metal catalytic systems, some researchers, such as Hamada, Gao, J. S. Zhou, Chirik, X. Zhang, Y.-G. Zhou, W. Zhang, Lv, Dong, Fu, Deng, and Hou, made great efforts to the development of earth-abundant nickel-catalyzed asymmetric hydrogenation o","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 23","pages":"3135-3156"},"PeriodicalIF":5.5,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195543","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
Precursor-Mediated Direct Growth of Defect-Rich Hierarchical Nanocarbons for Electrocatalytic Hydrogen Peroxide Production† 以前驱体为介质直接生长富缺陷分层纳米碳,用于电催化过氧化氢生产†。
IF 5.5 1区 化学
Chinese Journal of Chemistry Pub Date : 2024-08-13 DOI: 10.1002/cjoc.202400455
Xiaoting Sun, Tiantian Lu, Jialei Chen, Youzeng Li, Shan Chen, Xuelong Liao, Ying Liu, Runyu Lv, Huan Wang
{"title":"Precursor-Mediated Direct Growth of Defect-Rich Hierarchical Nanocarbons for Electrocatalytic Hydrogen Peroxide Production†","authors":"Xiaoting Sun,&nbsp;Tiantian Lu,&nbsp;Jialei Chen,&nbsp;Youzeng Li,&nbsp;Shan Chen,&nbsp;Xuelong Liao,&nbsp;Ying Liu,&nbsp;Runyu Lv,&nbsp;Huan Wang","doi":"10.1002/cjoc.202400455","DOIUrl":"10.1002/cjoc.202400455","url":null,"abstract":"<div>\u0000 \u0000 <p>Carbon-based nanomaterials show great potential in selective electrochemical oxygen reduction reaction (ORR) through two-electron (2e<sup>−</sup>) pathway for H<sub>2</sub>O<sub>2</sub> production, which provides an eco-friendly alternative to industrial energy-intensive anthraquinone process. However, it still remains challenging to directly construct topological defects, which makes it difficult to study the working mechanism on 2e<sup>–</sup> ORR. Herein, we propose a precursor-mediated chemical vapor deposition (CVD) approach for direct growth of topological defect-rich hierarchical nanocarbons. Boric acid (H<sub>3</sub>BO<sub>3</sub>) is introduced into the precursor for disturbing the nucleation and growth through decomposing B-containing species, which can <i>in situ</i> induce the formation of pentagon defects. The topological defect is found to be capable of introducing lattice strain, which can modify the electronic structure of nanocarbons and promote the key intermediate (*OOH) formation, thus greatly enhancing the 2e<sup>–</sup> ORR performance. Experimentally, the 2e<sup>–</sup> ORR selectivity shows a positive correlation to the topological defect density, where the average H<sub>2</sub>O<sub>2</sub> selectivity reaches above 90% over a wide potential range with optimized concentration of H<sub>3</sub>BO<sub>3</sub> as mediator. Moreover, in a flow cell, the hierarchical nanocarbons achieve a high H<sub>2</sub>O<sub>2</sub> production rate of 998 mmol·g<sub>catalyst</sub><sup>−1</sup>·h<sup>−1</sup> over 20 h of continuous electrocatalysis with stable current density (&gt;100 mA·cm<sup>–2</sup>) and Faradaic efficiency (&gt; 90%). This work provides a straightforward method for the synthesis of active metal-free carbon-based catalyst for sustainable H<sub>2</sub>O<sub>2</sub> production.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 23","pages":"3113-3121"},"PeriodicalIF":5.5,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195545","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
Formate-Mediated Synthesis of β-Hydroxysulfides from Olefins and Thiosulfonates via EDA Complex Strategy under Visible Light Irradiation in Air 在空气中可见光辐照下,通过 EDA 复合物策略,以烯烃和硫代磺酸盐为原料,合成甲醛介导的 β-羟基硫化物
IF 5.5 1区 化学
Chinese Journal of Chemistry Pub Date : 2024-08-13 DOI: 10.1002/cjoc.202400530
Qing Shen, Xiaoyan Peng, Jiahong Sui, Min Peng, Xiangwei Liu, Hezhong Jiang, Rui Tan, Min Zhou, Jiahong Li
{"title":"Formate-Mediated Synthesis of β-Hydroxysulfides from Olefins and Thiosulfonates via EDA Complex Strategy under Visible Light Irradiation in Air","authors":"Qing Shen,&nbsp;Xiaoyan Peng,&nbsp;Jiahong Sui,&nbsp;Min Peng,&nbsp;Xiangwei Liu,&nbsp;Hezhong Jiang,&nbsp;Rui Tan,&nbsp;Min Zhou,&nbsp;Jiahong Li","doi":"10.1002/cjoc.202400530","DOIUrl":"10.1002/cjoc.202400530","url":null,"abstract":"<div>\u0000 \u0000 <p>A visible-light-induced and efficient one-pot synthesis of <i>β</i>-hydroxysulfides from olefins, thiosulfonates and HCOOCs using an EDA complex strategy under air atmosphere at room temperature has been disclosed. A plausible radical involved mechanism is proposed. During the reaction process, formates play a crucial role: first, as donors in the EDA complex; second, as providers of the hydrogen source; and third, by generating CO<sub>2</sub><sup>•–</sup> to reduce peroxide intermediates, leading to the formation of <i>β</i>-hydroxysulfides. In contrast to the previously reported thiol-oxygen co-oxidation reactions, this simple and sustainable approach features mild reaction conditions, operational simplicity, odorless and excellent functional group tolerance.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 23","pages":"3129-3134"},"PeriodicalIF":5.5,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195547","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
Deracemization of Sulfoxides Combining Electrocatalysis and Biocatalysis 结合电催化和生物催化的硫氧化物脱芳烃技术
IF 5.5 1区 化学
Chinese Journal of Chemistry Pub Date : 2024-08-13 DOI: 10.1002/cjoc.202400567
Xinyu Duan, Dong Cui, Mengdi Wang, Yifan Tian, Jianan Shi, Yixue Wu, Shuang Liu, Zejie Zhu, Jian Xu
{"title":"Deracemization of Sulfoxides Combining Electrocatalysis and Biocatalysis","authors":"Xinyu Duan,&nbsp;Dong Cui,&nbsp;Mengdi Wang,&nbsp;Yifan Tian,&nbsp;Jianan Shi,&nbsp;Yixue Wu,&nbsp;Shuang Liu,&nbsp;Zejie Zhu,&nbsp;Jian Xu","doi":"10.1002/cjoc.202400567","DOIUrl":"10.1002/cjoc.202400567","url":null,"abstract":"<div>\u0000 \u0000 <p>The concurrent implementation of cascade reactions that combine biocatalysis and chemocatalysis is a challenging undertaking. Electrocatalysis provides versatile catalytic abilities and allows for mild reaction conditions, offering the potential for designing concurrent chemoenzymatic cascade reactions. The research on bioelectrocatalysis has primarily concentrated on utilizing electrocatalysis to achieve cofactor regeneration of enzymes. In contrast with previous reports, herein, we developed a deracemization strategy involving the concurrent combination of biocatalytic reduction and anodic oxidation in an undivided cell to achieve chiral sulfoxides, demonstrating the good compatibility. We anticipate this study will offer an alternative pathway for the design of the cascade reaction combined with electrocatalysis and biocatalysis.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 23","pages":"3107-3112"},"PeriodicalIF":5.5,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195544","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
Photo-Excited Switching and Enhancement of Dielectric Properties in Two-Dimensional Double Perovskite Phase Transition Thin Films 二维双包晶相变薄膜中的光激发开关和介电性质的增强
IF 5.5 1区 化学
Chinese Journal of Chemistry Pub Date : 2024-08-13 DOI: 10.1002/cjoc.202400529
Linjie Wei, Yi Liu, Tian Yang, Hao Rong, Xianmei Zhao, Jingtian Zhang, Junhua Luo, Zhihua Sun
{"title":"Photo-Excited Switching and Enhancement of Dielectric Properties in Two-Dimensional Double Perovskite Phase Transition Thin Films","authors":"Linjie Wei,&nbsp;Yi Liu,&nbsp;Tian Yang,&nbsp;Hao Rong,&nbsp;Xianmei Zhao,&nbsp;Jingtian Zhang,&nbsp;Junhua Luo,&nbsp;Zhihua Sun","doi":"10.1002/cjoc.202400529","DOIUrl":"10.1002/cjoc.202400529","url":null,"abstract":"<div>\u0000 \u0000 <p>Optical controlling of solid-sate electric properties is emerging as a non-contact and nondestructive avenue to optimize the physical properties of electronic and optoelectronic devices. In term of strong light-material coupling, two-dimensional (2D) double perovskites hold great prospects to create photo-dielectric activities for high-performance device applications. Here, we have achieved the photo-excited switching and enhancement of dielectric properties in the orientational thin films of a 2D double perovskite, (C<sub>4</sub>H<sub>12</sub>N)<sub>4</sub>AgBiI<sub>8</sub> (<b>1</b>, where C<sub>4</sub>H<sub>9</sub>NH<sub>3</sub><sup>+</sup> is isobutylammonium). It undergoes a structural phase transition at 384 K (<i>T</i><sub>c</sub>), triggered by the dynamic ordering of organic cations and tilting motion of isometallic perovskite sheets. Most notably, the orientational thin films of <b>1</b> are extremely sensitive to light illumination, of which the dielectric constants can be facilely photo-switched between the low- and high-states. During this photo-switching process, the dielectric constants are enhanced with a magnitude up to ~350% under 405 nm, far beyond most of the inorganic phase transition counterparts. In addition, this photo-excited switching and enhancement of dielectric response exhibits an operational stability with superior anti-fatigue characteristics. Our work opens up a potential avenue for assembling high-performance optoelectronic devices with the controllable physical properties.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 23","pages":"3122-3128"},"PeriodicalIF":5.5,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195546","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
Borane-Catalyzed Asymmetric Reduction of 2-Alkylpyridines† 硼烷催化的 2-烷基吡啶†的不对称还原
IF 5.5 1区 化学
Chinese Journal of Chemistry Pub Date : 2024-08-08 DOI: 10.1002/cjoc.202400671
Heng Luo, Zhao-Ying Yang, Ming Zhang, Xiao-Chen Wang
{"title":"Borane-Catalyzed Asymmetric Reduction of 2-Alkylpyridines†","authors":"Heng Luo,&nbsp;Zhao-Ying Yang,&nbsp;Ming Zhang,&nbsp;Xiao-Chen Wang","doi":"10.1002/cjoc.202400671","DOIUrl":"10.1002/cjoc.202400671","url":null,"abstract":"<div>\u0000 \u0000 <p>Herein, a method for the enantioselective reduction of unprotected 2-alkylpyridines is reported for the first time. By using pinacolborane and an amide as reducing agents, a large number of 2-alkylpiperidines were synthesized with high yields and excellent enantioselectivities via a cascade process involving 1,4-hydroboration and subsequent transfer hydrogenation. The resulting products can be easily converted to natural alkaloids.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 23","pages":"3088-3092"},"PeriodicalIF":5.5,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141929090","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
Synthesis of Three-Dimensional Chiral Covalent Organic Frameworks Using Surfactant as Inducer in Water 以表面活性剂为诱导剂在水中合成三维手性共价有机框架
IF 5.5 1区 化学
Chinese Journal of Chemistry Pub Date : 2024-08-08 DOI: 10.1002/cjoc.202400552
Meiying Huang, Zhipeng Zhou, Xin Dong, Yuyao Li, Yonghang Yang, Changye Zhan, Jiaxing Lu, Xiaoshu Wei, Yuexian Hong, Weiqi Cheng, Wei Liu, Zhongke Yuan, Xudong Chen, Zhikun Zheng
{"title":"Synthesis of Three-Dimensional Chiral Covalent Organic Frameworks Using Surfactant as Inducer in Water","authors":"Meiying Huang,&nbsp;Zhipeng Zhou,&nbsp;Xin Dong,&nbsp;Yuyao Li,&nbsp;Yonghang Yang,&nbsp;Changye Zhan,&nbsp;Jiaxing Lu,&nbsp;Xiaoshu Wei,&nbsp;Yuexian Hong,&nbsp;Weiqi Cheng,&nbsp;Wei Liu,&nbsp;Zhongke Yuan,&nbsp;Xudong Chen,&nbsp;Zhikun Zheng","doi":"10.1002/cjoc.202400552","DOIUrl":"10.1002/cjoc.202400552","url":null,"abstract":"<div>\u0000 \u0000 <p>Chiral covalent organic frameworks (COFs) have shown promising applications in asymmetric catalysis, enantiomer separation and chiral recognition due to their tunable structures and permanent porosity. Currently, synthesis of chiral COFs mainly relies on direct- synthesis method which requires asymmetric monomers to polymerize and crystallize with symmetric monomers and post-synthesis method which has been greatly limited to having complete reactions with the micro-/meso-sized pores of COFs. Recently, the synthesis of two-dimensional COFs by covalent replacement of chiral competitor has been reported. Herein, we present the synthesis of three types of 3D COFs with tunable chirality using chiral amino acid derivative surfactant as inducer in water under ambient conditions. The hydrogen bonds and electrostatic interactions between amino acid derivative surfactant and monomers as well as their precursors facilitate the transfer of the chirality.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 23","pages":"3093-3098"},"PeriodicalIF":5.5,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141935585","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
A GSH-Responsive Immune-Stimulating Polypeptide Hydrogel Loaded with Chemotherapeutics, IDO Inhibitor and Immune Checkpoint Blocking Antibody for Enhanced Anti-Tumor Chemo-Immunotherapy 富含化疗药物、IDO 抑制剂和免疫检查点阻断抗体的 GSH 反应性免疫刺激多肽水凝胶,用于增强抗肿瘤化疗-免疫疗法的效果
IF 5.5 1区 化学
Chinese Journal of Chemistry Pub Date : 2024-08-08 DOI: 10.1002/cjoc.202400475
Junfeng Ding, Tianran Wang, Yan Rong, Chaoliang He, Xuesi Chen
{"title":"A GSH-Responsive Immune-Stimulating Polypeptide Hydrogel Loaded with Chemotherapeutics, IDO Inhibitor and Immune Checkpoint Blocking Antibody for Enhanced Anti-Tumor Chemo-Immunotherapy","authors":"Junfeng Ding,&nbsp;Tianran Wang,&nbsp;Yan Rong,&nbsp;Chaoliang He,&nbsp;Xuesi Chen","doi":"10.1002/cjoc.202400475","DOIUrl":"10.1002/cjoc.202400475","url":null,"abstract":"<div>\u0000 \u0000 <p>Due to the immunosuppressive tumor microenvironment (TME), T cells are usually inactivated and tend to differentiate into regulatory T cells (Tregs) in the tumor tissues, which seriously hinders the anti-tumor efficiency of immunotherapy. In this study, an immune-stimulating polypeptide hydrogel conjugated with an indoleamine-2,3-dioxygenase (IDO) inhibitor, 1-methyl-<i>D</i>-tryptophan (D1MT), through a glutathione (GSH)-responsive spacer was developed as an immunotherapy platform capable of regulating the TME. A combined immunotherapy system was further constructed through encapsulating doxorubicin (Dox) and immune checkpoint blocking antibody targeting programmed cell death protein 1 (aPD-1) in the hydrogel. Dox released from the hydrogel could cause the immunogenic cell death (ICD) of tumor cells and induce the maturation of antigen presenting cells (APCs). After intratumoral injection, the multiple agent-loaded hydrogel elicited effective anti-tumor immunity in mice bearing B16F10 melanoma. Moreover, compared with the control hydrogel without D1MT, the immune-stimulating hydrogel showed better efficiency in improving the immunosuppressive TME with increased number of activated T cells and reduced number of Tregs. Therefore, the immune-stimulating hydrogel has great potential as a stimuli-responsive platform for regulating suppressive TME and enhanced anti-tumor chemo-immunotherapy.</p>\u0000 <p></p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 23","pages":"2957-2969"},"PeriodicalIF":5.5,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141928889","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
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