Chemistry - An Asian Journal最新文献_第10页

[5]Helicene-Embedded Cycloparaphenylene Nanohoops with Möbius Topology: Synthesis, Photophysical Properties, and Aromaticity. [5]螺旋烯嵌入环对苯炔纳米环Möbius拓扑结构：合成、光物理性质和芳香性。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-05 DOI: 10.1002/asia.202500205

Huiji Yang, Shengzhu Guo, Weijie Guo, Lin Liu, Xiaoyu Liu, Jing He, Yanqing Fan, Zhe Lian, Xiaonan Li, Shu Huang, Xuebo Chen, Ying Wang, Hua Jiang

{"title":"[5]Helicene-Embedded Cycloparaphenylene Nanohoops with Möbius Topology: Synthesis, Photophysical Properties, and Aromaticity.","authors":"Huiji Yang, Shengzhu Guo, Weijie Guo, Lin Liu, Xiaoyu Liu, Jing He, Yanqing Fan, Zhe Lian, Xiaonan Li, Shu Huang, Xuebo Chen, Ying Wang, Hua Jiang","doi":"10.1002/asia.202500205","DOIUrl":"https://doi.org/10.1002/asia.202500205","url":null,"abstract":"The relationship between Möbius topology and aromaticity still remains elusive, which is largely due to the related synthetic challenges and, further, the scarcity in both the quantity and the diversity of the constructed Möbius systems. In this work, we report the synthesis of [4n]Möbius conjugated all-carbon nanohoops ([5]H-[7,8]CPPs) by utilizing a [5]helicene unit as a hidden writhe and a masked aromatic unit to overcome the strain inherited from Möbius topology. X-ray analyses reveal that [5]H-[7,8]CPPs contain a [5]helicene moiety and an oligoparaphenylene unit, clearly exhibiting Möbius topology. Photophysical investigations demonstrated that [5]H-[7,8]CPPs exhibited moderately high fluorescence quantum yields, significantly higher than those of pristine [5]helicene and [7,8]CPPs. Chiroptical studies revealed that [5]H-[7,8]CPPs displayed an obvious Cotton effect in circular dichroism and bright circularly polarized luminescence, indicating efficient transfer of chirality from the [5]helicene to the overall carbon nanohoops. Importantly, theoretical investigations reveal that, though possessing a Möbius topology and a 4n π-electron array in the neutral state, [5]H-[7,8]CPPs fundamentally exhibit local Hückel aromaticity, while their dications, with a 4n + 2 π-electron in the conjugation circuits, show Hückel in-plane global aromaticity, deviating from the Heilbronner prediction. The results may help us to better understand the complicated relationship between Möbius topology and aromaticity.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00205"},"PeriodicalIF":3.5,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223821","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

Unveiling the Pyridine Functionalized Dicyanostilbene/Reduced Graphene Oxide Electrode Materials for High Performance Symmetric Supercapacitors. 揭示吡啶功能化双氰二苯乙烯/还原氧化石墨烯用于高性能对称超级电容器的电极材料。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-05 DOI: 10.1002/asia.202500125

Sudhir D Jagadale, Sidhanath V Bhosale, Sheshanath V Bhosale

{"title":"Unveiling the Pyridine Functionalized Dicyanostilbene/Reduced Graphene Oxide Electrode Materials for High Performance Symmetric Supercapacitors.","authors":"Sudhir D Jagadale, Sidhanath V Bhosale, Sheshanath V Bhosale","doi":"10.1002/asia.202500125","DOIUrl":"https://doi.org/10.1002/asia.202500125","url":null,"abstract":"Pseudocapacitors (PSCs) are attractive alternatives with great potential in the next generation of electrical energy storage (EES) devices. So far, PSCs are mainly fabricated using inorganic transition metal oxides. To overcome the cost and stability issues of such PSCs, organic electrode materials available from renewable sources are attracting researchers' attention. In this study, to enhance the electrochemical performance of PSCs, we non-covalently functionalized reduced graphene oxide (rGO) substrate with a redox-active (2Z,2'Z)-2,2'-(1,4-phenylene)bis(3-(pyridin-4-yl)acrylonitrile) (DCBS), yielding the composite electrode systems. The presence of the pyridine ring system in combination with the nitrile (─C≡N) functional group provides an additional contribution of faradaic reversible redox reactions and stability of the DCBS/rGO electrode in PSC performance. Significantly, our DCBS/rGO composite electrode-based three-electrode supercapacitor (SC) device exhibited excellent specific capacitance of 318.98 F g-1 at 0.5 A g-1 current density. Moreover, in symmetric supercapacitor (SSC) cell configuration, the DCBS/rGO at 0.5 A g-1 current density displayed Csp as high as 135.10 F g-1 and an energy density of 24.31 Wh kg-1 at 1080 W kg-1 power density. The SSC device showed great Csp retention (98.3%) after 10000 galvanostatic charge-discharge (GCD) cycles at a current density of 3 A g-1. The present investigation underscores the DCBS/rGO based electrode materials offer ideas to improve the charge storage capacity, device stability and energy density for supercapacitors.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00125"},"PeriodicalIF":3.5,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223830","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

A Wide-Temperature-Range Electrolyte for all Vanadium Flow Batteries. 适用于全钒液流电池的宽温度范围电解液。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-04 DOI: 10.1002/asia.202500607

Jingyu Zhai, Xiao Li, Kun Xi, Huibing Shi, Tao Gao, Xiaomin Zhang, Shiyang Niu, Yunfei Li, Fenghong Tang, Deming Zhao, Wenjiao Ji, Wenjie Li, Qinzhi Lai, Yuanhui Cheng

{"title":"A Wide-Temperature-Range Electrolyte for all Vanadium Flow Batteries.","authors":"Jingyu Zhai, Xiao Li, Kun Xi, Huibing Shi, Tao Gao, Xiaomin Zhang, Shiyang Niu, Yunfei Li, Fenghong Tang, Deming Zhao, Wenjiao Ji, Wenjie Li, Qinzhi Lai, Yuanhui Cheng","doi":"10.1002/asia.202500607","DOIUrl":"https://doi.org/10.1002/asia.202500607","url":null,"abstract":"The all-vanadium flow battery (VFB) has emerged as a highly promising large-scale, long-duration energy storage technology due to its inherent advantages, including decoupling of power and capacity, high safety, scalability, long cycle life, and environmental compatibility. However, the practical application of VFB systems is hindered by the poor thermal stability of vanadium electrolytes under extreme temperatures, where precipitation occurs at high temperatures (≥40 °C) and low temperatures (≤10 °C), severely limiting their geographical adaptability. This study proposes a wide-temperature-range (WTR) electrolyte by introducing four organic/inorganic additives, comprising benzene sulfonate, phosphate salts, halide salts, and imidazole into the conventional vanadium electrolyte. The operational temperature of vanadium electrolyte was extended to -5∼45 °C. Electrochemical characterization confirmed that WTR-electrolyte has comparable performance to the conventional electrolyte at 100 mA cm-2, while not sacrificing performance. Furthermore, the WTR-electrolyte can not only be stored in the temperature range of -5∼45 °C, but also can stably operate at -5 °C and 45 °C. This work provides a viable strategy for designing WTR vanadium electrolytes, offering critical insights to advance the deployment of vanadium-based energy storage systems in diverse climatic environments.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00607"},"PeriodicalIF":3.5,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144214476","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

Cover Feature: Supramolecular Polymers of Amino Triazines vs. Amino Pyrimidines in Aqueous Solution: How Key Interactions Control their Thermodynamic Stability (Chem. Asian J. 10/2025) 封面特征：水溶液中氨基三嗪与氨基嘧啶的超分子聚合物：关键相互作用如何控制它们的热力学稳定性（化学）。亚洲J. 10/2025)

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-02 DOI: 10.1002/asia.202581002

José L. Gómez Chávez, Matías O. Miranda, Dr. Emilio L. Angelina, Dr. Silvana C. Pamies, Prof. Nélida M. Peruchena, Dr. Andre N. Petelski

引用次数: 0

Deciphering the Role of Spin-Polarization in Oxygen Evolution via Chiral Mixed Mn/Fe/Ni/Co-Based Transition Metal Oxide. 通过手性混合Mn/Fe/Ni/ co基过渡金属氧化物解读自旋极化在析氧中的作用。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-02 DOI: 10.1002/asia.202500137

Utkarsh Utkarsh, Sachidananda Sahu, Anujit Balo, Dibyendu Barik, Koyel Banerjee Ghosh

{"title":"Deciphering the Role of Spin-Polarization in Oxygen Evolution via Chiral Mixed Mn/Fe/Ni/Co-Based Transition Metal Oxide.","authors":"Utkarsh Utkarsh, Sachidananda Sahu, Anujit Balo, Dibyendu Barik, Koyel Banerjee Ghosh","doi":"10.1002/asia.202500137","DOIUrl":"https://doi.org/10.1002/asia.202500137","url":null,"abstract":"Oxygen evolution reaction (OER) plays a crucial role in energy storage and conversion technologies. However, its higher overpotential challenges the scientific community to overcome it. Recent advancements in OER demonstrate that inducing spin-polarization at the anode either employing chiral molecular modification or magnetic substrate, augmentation of OER is possible. Adopting this idea, we evaluated the effect of chiral molecular modification of mixed-transition metal-based spinel oxide on the spin-polarized charge transfer during OER. Chiral molecular functionalization of the catalyst has been carried out using chiral analogs of phenylalanine, which enhances the stability and catalytic activity of the catalyst by controlling the electron's spin utilizing the chiral-induced spin selectivity (CISS) effect. The experimental results show that the chiral molecule integrated catalyst decreases the overpotential by ∼200 mV at 10 mA cm-2 with respect to the achiral one. Moreover, it increases the current density by ∼2 times at 2.1 V (vs. RHE) and decreases hydrogen peroxide production significantly compared to its achiral analog. The results of these studies are explained by controlling the spin-polarization of the anodic current during water oxidation employing CISS effect. Hence, this study opens new avenues for enhancing the performance of the catalysts for sustainable energy applications utilizing spin-polarized charge transfer.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00137"},"PeriodicalIF":3.5,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197850","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

A Versatile Disulfide-Containing Solid-Support Strategy for 3'-Modifiers in Oligonucleotides: Introducing Modular Tandem Oligonucleotide Synthesis. 一种多用途的含二硫固体载体策略用于3'-寡核苷酸修饰剂：介绍模块化串联寡核苷酸合成。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-02 DOI: 10.1002/asia.202500537

Jagandeep S Saraya, Nicholas G Horton, Michael J Capperauld, Evan Zakaria, Derek K O'Flaherty

{"title":"A Versatile Disulfide-Containing Solid-Support Strategy for 3'-Modifiers in Oligonucleotides: Introducing Modular Tandem Oligonucleotide Synthesis.","authors":"Jagandeep S Saraya, Nicholas G Horton, Michael J Capperauld, Evan Zakaria, Derek K O'Flaherty","doi":"10.1002/asia.202500537","DOIUrl":"https://doi.org/10.1002/asia.202500537","url":null,"abstract":"Chemical modifications of oligonucleotides are routinely employed to enhance their functional properties. Amino-modifiers serve as versatile chemical handles for postsynthetic (bio)conjugation, nucleic acid immobilization on solid supports, and investigations into nonenzymatic genome replication relevant to the origins of life, to name a few. Here, we report a cost-effective, disulfide-containing solid-support linkage that enables the on-column synthesis of nucleic acids with 3'-amino or 3'-phosphate modifications. The orthogonality of this solid-support linker facilitates an on-column protecting group strategy, enabling the synthesis of DNA and RNA containing 3'-amino-2',3'-dideoxyribosides from commercial unprotected mononucleosides. Additionally, we present an on-column deprotection protocol for DNA and RNA, prior to cleavage from the solid support, eliminating the precipitation step typically required in conventional RNA workflows, leading to higher recovery for certain strands. Expanding on our previous work, we introduce a versatile modular tandem oligonucleotide synthesis (mTOS) approach, allowing selective release of downstream strands from the one directly bound to the solid-support via the disulfide-containing linker. Together, these advances in solid-support design and oligonucleotide synthesis unlock new opportunities in bioconjugation, biotechnology, and the study of prebiotic replication mechanisms, broadening the utility of chemically modified nucleic acids across research disciplines.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00537"},"PeriodicalIF":3.5,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197849","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

Front Cover: Rotaxane-Based Mechanochromic Mechanophore Enabled by Amide Bond Formation (Chem. Asian J. 10/2025) 封面：由酰胺键形成激活的轮烷基机械致变色机械团（化学）。亚洲J. 10/2025)

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-02 DOI: 10.1002/asia.202581001

Yuto Yoshida, Prof. Yoshimitsu Sagara

引用次数: 0

Embossing Redox-Active Nickel(II) Complexes on Pencil Graphite Electrodes for Frugal Electrocatalytic Hydrogen Production. 在铅笔石墨电极上压印氧化还原活性镍（II）配合物用于低成本电催化制氢。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-06-02 DOI: 10.1002/asia.202500203

Sangharaj Diyali, Nilankar Diyali, Madhumita Samanta, Subhajit Saha, Gopal Sarkar, Subhamay Paramanik, Suraj Kumar Agrawalla, Chandra Shekhar Purohit, Bhaskar Biswas

{"title":"Embossing Redox-Active Nickel(II) Complexes on Pencil Graphite Electrodes for Frugal Electrocatalytic Hydrogen Production.","authors":"Sangharaj Diyali, Nilankar Diyali, Madhumita Samanta, Subhajit Saha, Gopal Sarkar, Subhamay Paramanik, Suraj Kumar Agrawalla, Chandra Shekhar Purohit, Bhaskar Biswas","doi":"10.1002/asia.202500203","DOIUrl":"https://doi.org/10.1002/asia.202500203","url":null,"abstract":"This work focuses on developing a pencil graphite electrode (PGE) as the working electrode through the electrocatalytic activities of rationally designed coordination-driven electrocatalysts toward sustainable hydrogen production. Upon careful treatment, a normal wooden pencil ($1/INR85) can be transformed into a standard working electrode ($180/INR15000). In this context, the PGE has evolved as the working electrode with rationally designed nickel(II) complexes Ni-LMe and Ni-LPh obtained through one-pot synthesis between alkyl-thiosemicarbazide and acenaphthylene-1,2-dione and nickel(II) acetate. X-ray crystallography analysis reveals that both the nickel complexes adopt an isostructural square planar coordination geometry. The PGE/Ni-LMe and PGE/Ni-LPh in aqueous 0.5 M H2SO4 rendered an overpotential of about 0.48 and 0.41 V vs. RHE with a Tafel slope of 149 and 101 mV per decade, respectively. Chronopotentiometry and constant potential electrolysis ensure excellent durability and electrocatalytic hydrogen production with 95% and 98% faradaic efficiency, respectively, for Ni-LMe and Ni-LPh. Crystal engineering approaches attribute the higher electrocatalytic activities of Ni-LPh over Ni-LMe to its higher surface area and planarity. The high propensity of strong stacking interactions between the extensive π-electronic conjugated network of PGE and square planar nickel complexes leads to a perfect synergism and facilitates rapid electron transport with high electrocatalytic efficiency.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00203"},"PeriodicalIF":3.5,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197851","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

Advances in Multichromophoric Metal-Free FRET Macrocycles and 2D Metallacycles. 多色无金属FRET大环和二维金属环的研究进展。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-05-30 DOI: 10.1002/asia.202500363

Vidushi Gupta, Sanchita Sengupta

{"title":"Advances in Multichromophoric Metal-Free FRET Macrocycles and 2D Metallacycles.","authors":"Vidushi Gupta, Sanchita Sengupta","doi":"10.1002/asia.202500363","DOIUrl":"https://doi.org/10.1002/asia.202500363","url":null,"abstract":"This review highlights the recent advances in the development of multichromophoric, metal-free covalent macrocycles and 2D metallacycles exhibiting Förster resonance energy transfer (FRET) that imparts emergent functions to these structures. The design strategies and synthetic methodologies for multichromophoric macrocycles and their structural diversities have been discussed. A covalent synthetic approach in macrocycle design ensures rigidity and precise chromophoric arrangement while a metal coordination driven self-assembly strategy provides facile access to dynamic structures of 2D metallacycles with tunable (opto)electronic properties. Despite synthetic challenges, macrocyclic architecture offer structural rigidity and minimized excitation traps compared to linear counterparts. This review highlights the key synthetic strategies for metal-free covalent macrocycles, including condensation, templated cyclization, Prato's reaction, and copper-catalyzed azide/alkyne cycloaddition (CuAAC), alongside noncovalent approaches. The discrete nature, size and shape, and photophysical properties of these multichromophoric FRET macrocycles have been leveraged for various applications such as biomedicine, sensing, in vivo imaging, and photocatalysis and their future applications for host-guest chemistry, nanoreactors for photocatalysis, and optoelectronics are discussed.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00363"},"PeriodicalIF":3.5,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144186109","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

Efficient and Diastereoselective Syntheses of C-6 Homologues of DMJ, DNJ Iminosugars. DMJ、DNJ亚糖C-6同源物的高效非对映选择性合成。

IF 3.5 3区化学

Chemistry - An Asian Journal Pub Date : 2025-05-29 DOI: 10.1002/asia.202401877

Kanchan Maurya, Krishna P Kaliappan

引用次数: 0