Chemistry - An Asian Journal最新文献_第10页

Synthesis of Thiol Functionalized MOF-808 and its Efficiency for Mercury Removal. 硫醇功能化 MOF-808 的合成及其脱汞效率

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-07-31 DOI: 10.1002/asia.202400306

Khaled Hassanein Sayed Ahmed, Tawfik A Saleh, Ismail Abdulazeez, Hamza A Asmaly

引用次数: 0

Functionalization of a [2]Catenane with Donor-Acceptor Chromophores Using a Metal Template and Click Reactions. 利用金属模板和单击反应使 [2]Catenane 与供体-受体色团官能化。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-07-31 DOI: 10.1002/asia.202400668

Chandra Shekhar Purohit, Priyanka Ghosh, Radhakrishna Ratha

{"title":"Functionalization of a [2]Catenane with Donor-Acceptor Chromophores Using a Metal Template and Click Reactions.","authors":"Chandra Shekhar Purohit, Priyanka Ghosh, Radhakrishna Ratha","doi":"10.1002/asia.202400668","DOIUrl":"https://doi.org/10.1002/asia.202400668","url":null,"abstract":"Synthesizing molecules with significant topological features, such as catenanes, tailored with specific groups to confer desired functionality, is essential for investigating various properties arising from the entanglement due to mechanical bonds. This investigation can pave the way for uncovering novel functional materials employing mechanically interlocked molecules (MIMs). In this direction, we have synthesized a p-donor (D) and p-acceptor (A) functionalized [2]catenane using a non-labile Co(III) metal ion as a template with pyridine-diamide templating center and utilizing click reaction for ring-closing. The donor group is a fluorene derivative, and the acceptor is a benzophenazine derivative, commonly employed in synthesizing conjugated polymers for various optoelectronic devices. Synthetically, the acceptor group was introduced into a macrocycle with a pyridine diamide unit. It was then threaded with a ligand having alkyne terminals to obtain the desired [2]pseudorotaxane utilizing cobalt ion as a template. Ring-closing was then performed with a di-azide functionalized molecule with the donor chromophore. The desired D-A functionalized [2]catenane is obtained after demetalation. All the starting materials, macrocycle, and entangled structures have been characterized by 1H-NMR, 13C-NMR, and mass spectroscopy. Some of these materials are also characterized by single-crystal X-ray analysis. The photophysical properties are studied by UV-visible and fluorescence spectroscopy.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141854256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Regioselective synthesis of 2,3-disubstituted indoles via interrupted Heyns rearrangement involving C-C bond cleavage. 通过涉及 C-C 键裂解的间断海因斯重排，区域选择性合成 2,3 二甲基吲哚。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-07-31 DOI: 10.1002/asia.202400731

Minakshi Altia, Pazhamalai Anbarasan

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A Comprehensive Review of CO2 Hydrogenation into Formate/Formic Acid Catalyzed by Whole Cell Bacteria. 全细胞细菌催化二氧化碳加氢转化为甲酸/甲酸的全面综述。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-07-30 DOI: 10.1002/asia.202400468

Mohammad Moniruzzaman, Ki-Seok Yoon, Sadia Afrin, Md Saddam Hossain

{"title":"A Comprehensive Review of CO2 Hydrogenation into Formate/Formic Acid Catalyzed by Whole Cell Bacteria.","authors":"Mohammad Moniruzzaman, Ki-Seok Yoon, Sadia Afrin, Md Saddam Hossain","doi":"10.1002/asia.202400468","DOIUrl":"https://doi.org/10.1002/asia.202400468","url":null,"abstract":"The increasing levels of carbon dioxide (CO2) in the atmosphere, primarily due to the use of fossil fuels, pose a significant threat to the environment and necessitate urgent action to mitigate climate change. Carbon capture and utilization technologies that can convert CO2 into economically valuable compounds have gained attention as potential solutions. Among these technologies, biocatalytic CO2 hydrogenation using bacterial whole cells shows promise for the efficient conversion of CO2 into formate, a valuable chemical compound. Although it was discovered nearly a century ago, comprehensive reviews focusing on the utilization of whole-cell bacteria as the biocatalyst in this area remain relatively limited. Therefore, this review provides an analysis of the progress, strategies, and key findings in this field. It covers the use of living cells, resting cells, or genetically modified bacteria as biocatalysts to convert CO2 into formate, either naturally or with the integration of electrochemical and protochemical techniques as sources of protons and electrons. By consolidating the current knowledge in this field, this review article aims to serve as a valuable resource for researchers and practitioners interested in understanding the recent progress, challenges, and potential applications of bacterial whole cell catalyzed CO2 hydrogenation into formate.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141854254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Two Different Chiral Groups Based Thermally Activated Delayed Fluorescence Materials for Circularly Polarized OLEDs. 基于两种不同手性基团的热激活延迟荧光材料，用于环形极化有机发光二极管。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-07-30 DOI: 10.1002/asia.202400664

Jia-Qi Liang, Jia-Jun Hu, Zhong-Zhong Huo, Zhi-Ping Yan, Li Yuan, Xiao-Sheng Zhong, Yi Wei, Shi-Quan Song, Qi-Ming Liu, You Song, You-Xuan Zheng

{"title":"Two Different Chiral Groups Based Thermally Activated Delayed Fluorescence Materials for Circularly Polarized OLEDs.","authors":"Jia-Qi Liang, Jia-Jun Hu, Zhong-Zhong Huo, Zhi-Ping Yan, Li Yuan, Xiao-Sheng Zhong, Yi Wei, Shi-Quan Song, Qi-Ming Liu, You Song, You-Xuan Zheng","doi":"10.1002/asia.202400664","DOIUrl":"https://doi.org/10.1002/asia.202400664","url":null,"abstract":"Circularly polarized organic light-emitting diodes (CP-OLEDs) hold significant promise for applications in 3D displays due to the ability to generate circularly polarized luminescence (CPL) directly. In this study, two pairs of circularly polarized thermally activated delayed fluorescence (CP-TADF) enantiomers, named RR/SS-ONCN and RS/SR-ONCN, were synthesized by integrating two distinct chiral groups into the dicyanobenzene unit. The RR/SS-ONCN and RS/SR-ONCN enantiomers show CPL properties with dissymmetry photoluminescence factors (|gPL|) of 1.3 × 10-3 and 2.0 × 10-3 in doped films, respectively. Notably, RR/SS-ONCN exhibit higher |gPL| values than that of RS/SR-ONCN, especially in doped films, indicating that when the configurations of the two chiral groups are identical, the |gPL| value of the CP-TADF materials can be enhanced, demonstrating a certain stacking effect. Moreover, the corresponding CP-OLEDs demonstrate good performances, achieving maximum external quantum efficiencies of up to 21.9% and notable CP electroluminescence with |gEL| factors of up to 1.0 × 10-3.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141854260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Supramolecular Exchange Reaction in the Cavity of Naphthalene diimides Extended-Pillar[6]arene. 萘二亚胺 Extended-Pillar[6]arene 空腔中的超分子交换反应。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-07-29 DOI: 10.1002/asia.202400767

Fei Zeng, Lin-Li Tang, Shan-Shan Tang, Hai-Shan Tang, Man-Hua Ding

引用次数: 0

Twisted Structure and Multiple Charge-Transfer Channels Endow Thermally Activated Delayed Fluorescence Devices with Small Efficiency Roll-Off and Low Concentration Dependence. 扭曲结构和多电荷转移通道赋予热激活延迟荧光器件较小的效率滚降和较低的浓度依赖性。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-07-29 DOI: 10.1002/asia.202400679

Yuan-Ye Zhu, Feng-Ming Xie, Hao-Ze Li, Kai Zhang, Han-Yang Wang, Hao-Nan Shi, Jianhua Zou, Yan-Qing Li, Jian-Xin Tang

{"title":"Twisted Structure and Multiple Charge-Transfer Channels Endow Thermally Activated Delayed Fluorescence Devices with Small Efficiency Roll-Off and Low Concentration Dependence.","authors":"Yuan-Ye Zhu, Feng-Ming Xie, Hao-Ze Li, Kai Zhang, Han-Yang Wang, Hao-Nan Shi, Jianhua Zou, Yan-Qing Li, Jian-Xin Tang","doi":"10.1002/asia.202400679","DOIUrl":"https://doi.org/10.1002/asia.202400679","url":null,"abstract":"Despite the rapid development of thermally activated delayed fluorescent (TADF) materials, developing organic light-emitting diodes (OLEDs) with small efficiency roll-off remains a formidable challenge. Herein, we have designed a TADF molecule (mClSFO) based on the spiro fluorene skeleton. The highly twisted structure and multiple charge-transfer channels effectively suppress aggregation-caused quenching (ACQ) and endow mClSFO with excellent exciton dynamic properties to reduce efficiency roll-off. Fast radiative rate (kr) and rapid reverse intersystem crossing (RISC) rate (kRISC) of 1.6 × 107 s-1 and 1.07 × 106 s-1, respectively, are obtained in mClSFO. As a result, OLEDs based on mClSFO obtain impressive maximum external quantum efficiency (EQEmax) exceeding 20% across a wide doping concentration range of 10-60 wt%. 30 wt% doped OLED exhibits an EQEmax of 23.1% with a small efficiency roll-off, maintaining an EQE of 18.6% at 1000 cd m-2. The small efficiency roll-off and low concentration dependence observed in the TADF emitter underscore its significant potential.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141786610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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Highly Stable Ni-B/Honeycomb-Structural Al2O3 Catalysts for Dry Reforming of Methane. 用于甲烷干法转化的高稳定性 Ni-B/Honeycomb 结构 Al2O3 催化剂。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-07-28 DOI: 10.1002/asia.202400700

Yuhao Luo, Tongming Su, Liuyun Chen, Hongbing Ji, Zuzeng Qin

{"title":"Highly Stable Ni-B/Honeycomb-Structural Al2O3 Catalysts for Dry Reforming of Methane.","authors":"Yuhao Luo, Tongming Su, Liuyun Chen, Hongbing Ji, Zuzeng Qin","doi":"10.1002/asia.202400700","DOIUrl":"https://doi.org/10.1002/asia.202400700","url":null,"abstract":"Two-component catalysts have garnered significant attention in the field of catalysis due to their ability to inhibit Ni sintering. In the present work, honeycomb-structured Al2O3-supported Ni and B were prepared to enhance coke tolerance during dry reforming of methane (DRM). Transmission electron microscopy (TEM) revealed that the average particle sizes on Ni/Al2O3 and Ni-0.16B/Al2O3 were 7.6 nm and 4.2 nm, respectively, indicating that B can effectively inhibit Ni sintering. After a 100-hour reaction, the conversion of CH4 and CO2 on Ni/Al2O3 decreased by approximately 5%, whereas on Ni-0.16B/Al2O3, there was no significant decrease in CH4 and CO2 conversion, with values of approximately 81.6% and 87.2%, respectively. In situ DRIFT spectra demonstrated that Ni-0.16B/Al2O3 enhanced the activation of CO2, thus improving the catalyst's stability. A Langmuir-Hinshelwood-Hougen-Watson (LHHW) model was developed for intrinsic kinetics, and the resulting kinetic expressions were well fit to the experimental data, with R2 values exceeding 0.9. The activation energies were also calculated. The outstanding stability of Ni-0.16B/Al2O3 can be attributed to its stable honeycomb structure and B's ability to significantly inhibit Ni sintering, reduce catalyst particle size, and enhance coke tolerance.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141786609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Rational design of isolated tetrahedrally coordinated Ti(IV) sites in zeolite frameworks for methyl oleate epoxidation. 合理设计沸石框架中用于油酸甲酯环氧化的孤立的四面体配位钛（IV）位点。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-07-26 DOI: 10.1002/asia.202400669

Sorasak Klinyod, Krissanapat Yomthong, Ploychanok Iadrat, Pinit Kidkhunthod, Kittisak Choojun, Tawan Sooknoi, Chularat Wattanakit

{"title":"Rational design of isolated tetrahedrally coordinated Ti(IV) sites in zeolite frameworks for methyl oleate epoxidation.","authors":"Sorasak Klinyod, Krissanapat Yomthong, Ploychanok Iadrat, Pinit Kidkhunthod, Kittisak Choojun, Tawan Sooknoi, Chularat Wattanakit","doi":"10.1002/asia.202400669","DOIUrl":"https://doi.org/10.1002/asia.202400669","url":null,"abstract":"The rational design of isolated metals containing zeolites is crucial for the catalytic conversion of biomass-derived compounds. Herein, we explored the insertion behavior of the isomorphic substitution of Ti(IV) in different zeolite frameworks, including ZSM-35 (FER), ZSM-5, and BEA. The different aluminium topological densities of each zeolite framework lead to the creation of different degrees of vacant sites for hosting the tetrahedrally coordinated Ti(IV) active sites. These observations show the precise control of the degree of four-coordinated Ti(IV) sites in a zeolite framework, especially in BEA topology, by tuning the degree of unoccupied sites in the host zeolite structure via dealumination. Interestingly, the more vacancies in the host zeolite structure, the more isolated tetrahedrally coordinated Ti(IV) can be increased, eventually enhancing the catalytic performance in methyl oleate (MO) epoxidation for producing methyl-9,10-epoxystearate (EP). The engineered Ti-β exhibits outstanding performances in bulky MO epoxidation with the amount of produced EP per number of Ti sites up to 17.1 ± 1.8 mol mol-1. This observation discloses an alternative strategy for optimizing catalyst efficiency in the rational design of the Ti-embedding zeolite catalyst, endeavoring to reach highly efficient catalytic performance.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141755958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Multilayer porous Co-Fe bimetallic electrocatalyst based on multi-walled carbon nanotubes for rechargeable zinc-air batteries. 基于多壁碳纳米管的多层多孔 Co-Fe 双金属电催化剂，用于可充电锌-空气电池。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2024-07-26 DOI: 10.1002/asia.202400366

Lijuan Ma, Han Wang, Jing Zang, Xinna Wang, Hao Li, Yanwei Li, Yanhui Li

{"title":"Multilayer porous Co-Fe bimetallic electrocatalyst based on multi-walled carbon nanotubes for rechargeable zinc-air batteries.","authors":"Lijuan Ma, Han Wang, Jing Zang, Xinna Wang, Hao Li, Yanwei Li, Yanhui Li","doi":"10.1002/asia.202400366","DOIUrl":"https://doi.org/10.1002/asia.202400366","url":null,"abstract":"The rational design of efficient, stable, low-cost non-precious metal-based electrocatalysts with enhanced oxygen reduction reaction (ORR) activity has attracted widespread attention. In this study, a novel electrocatalyst, Fe/Co-N-MWCNT, was prepared by in-situ growth of ZIF-8 and Fe/Co-Phen on multi-walled carbon nanotubes (MWCNTs), then pyrolysis under different temperature to obtain optimal one. During the pyrolysis process, the incorporation of Fe and Co facilitated the formation of metal active sites and Fe-Co alloy, thereby promoting electron transfer and enhancing the ORR activity. Compared to Pt/C (E1/2 = 0.854V, JL = 4.90 mA cm-2), Fe/Co-N-MWCNT demonstrated a comparable half-wave potential (E1/2 = 0.812V) and an enhanced limiting current density (JL = 5.37 mA cm-2). Furthermore, Fe/Co-N-MWCNT was stable and showed no significant change after 2000 cycles, with only a negative shift of 7 mV in E1/2. Ampere response testing revealed that the current decay of Fe/Co-N-MWCNT after 10000 s was only about 7.8%, while that of Pt/C was about 18.4%. Due to its excellent catalytic stability, Fe/Co-N-MWCNT was demonstrated to be an excellent candidate for rechargeable zinc-air batteries. The outstanding electrocatalytic performance of Fe/Co-N-MWCNT can be attributed to its high pyridinic nitrogen content, the unique structure and abundant metal active sites.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141755957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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