Nanophotosensitizing through Space Charge Transfer Assemblies of Pentacenequinone Derivative for 'Metal-free' Photoamidation Reactions
Chem Asian J. 2024 Jan 23:e202300954. doi: 10.1002/asia.202300954. Online ahead of print.ABSTRACTThe present study demonstrates the influence of small portion (20 %) of organic co-solvent (DMSO/THF/ACN/MeOH) in mixed aqueous media (80 % water) in controlling the size, quantum yield and life time of the through space charge transfer assemblies (TSCT) of pentacenequinone derivative (TPy-PCQ-TPy). Among various solvent systems [H2 O : DMSO (8 : 2), H2 O : THF (8 : 2), H2 O : ACN (8 : 2) and H2 O : MeOH (8 : 2)] examined, highly emissive (Φf =12 %) and nano-sized assemblies having long life time (3.11 ns) were formed in H2 O ...
Source: Chemistry, an Asian Journal - January 23, 2024 Category: Chemistry Authors: Kulwinder Kaur Harpreet Kaur Rajat Sharma Ashwani Kumar Sood Manoj Kumar Vandana Bhalla Source Type: research
Upcycling Food By-products: Characteristics and Applications of Nanocellulose
Chem Asian J. 2024 Jan 21:e202301068. doi: 10.1002/asia.202301068. Online ahead of print.ABSTRACTRising global food prices and the increasing prevalence of food insecurity highlight the imprudence of food waste and the inefficiencies of the current food system. Upcycling food by-products holds significant potential for mitigating food loss and waste within the food supply chain. Food by-products can be utilized to extract nanocellulose, a material that has obtained substantial attention recently due to its renewability, biocompatibility, bioavailability, and a multitude of remarkable properties. Cellulose nanomaterials hav...
Source: Chemistry, an Asian Journal - January 21, 2024 Category: Chemistry Authors: Mikyung Kim Hansol Doh Source Type: research
Degradation of Various Organic Coatings via UV-Generated Sulfate Radicals
Chem Asian J. 2024 Jan 20:e202301074. doi: 10.1002/asia.202301074. Online ahead of print.ABSTRACTDegradation of organic coatings is essential for recycling valuable substrates. Despite the development of strategies for this purpose, the resulting degradations are typically constrained by the composition of the coating. This paper presents a simple strategy utilizing radicals induced by UV for the degradation of diverse organic coatings. The sulfate radicals, generated from UV-exposed ammonium persulfates, induce the degradation of various organic coatings, including layer-by-layer assembled coating composed of alginate and...
Source: Chemistry, an Asian Journal - January 20, 2024 Category: Chemistry Authors: Ghanyatma Adi Baskoro Yovita Yudith Christstardy Jihun H Roh Beom Jin Kim Source Type: research
Fe < sub > 3 < /sub > C/Fe Decorated N-doped Carbon Derived from Tetrabutylammonium tetrachloroferrate Complex as Bifunctional Electrocatalysts for ORR, OER and Zn-Air Batteries in Alkaline Medium
Chem Asian J. 2024 Jan 19:e202300933. doi: 10.1002/asia.202300933. Online ahead of print.ABSTRACTThe emergence of non-precious metal-based robust and economic bifunctional oxygen electrocatalysts for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is crucial for the rational design of commercial rechargeable Zn-air batteries (RZAB) with safe energy conversion and storage systems. Herein, a facile strategy to fabricate a cost-efficient, bifunctional oxygen electrocatalyst Fe3 C/Fe decorated N doped carbon (FeC-700, the catalyst prepared at carbinization temperature of 700 °C) with a unique structur...
Source: Chemistry, an Asian Journal - January 19, 2024 Category: Chemistry Authors: Debojit Ghosh Rumeli Banerjee Samanka Narayan Bhaduri Rupak Chatterjee Abhisek Brata Ghosh Samarpita Das Indrani Pramanick Asim Bhaumik Papu Biswas Source Type: research
Metal-Free Heterogeneous Photocatalysis for Carbocarboxylation of Alkenes: Efficient Synthesis of γ-Amino Carboxylic Derivatives
Chem Asian J. 2024 Jan 17:e202301069. doi: 10.1002/asia.202301069. Online ahead of print.ABSTRACTA metal-free heterogeneous protocol is established herein for the synthesis of value-added γ-amino acid scaffolds via carbocarboxylation of alkenes with CO2 and alkylamines under visible light irradiation. The protocol shows broad substrate scope under mild reaction conditions and good stability of the catalyst for recycle tests. Moreover, the methodology could be feasible to the late-stage derivatization of several natural products, enriching the chemical arsenal for practical application.PMID:38234110 | DOI:10.1002/asia.2023...
Source: Chemistry, an Asian Journal - January 18, 2024 Category: Chemistry Authors: Ziwei Wu Senmao Zhai Meizhen Luo Quan Dong Shiwen Wu Meifang Zheng Source Type: research
Ligand- and metal-exchange reactions of robust nickel complexes with pentagonal bipyramidal structures
Chem Asian J. 2024 Jan 18:e202301094. doi: 10.1002/asia.202301094. Online ahead of print.ABSTRACTThe coordination chemistries of transition metal complexes with pentagonal bipyramidal geometries were investigated, and the highly stable nature of a cyclic pentapyridyl ligand was disclosed. A NiCl2 complex with the pentapyridyl ligand was found to be stable toward water and acidic conditions. The stable complex underwent ligand-exchange reactions with nucleophilic reagents, and a series of pentagonal bipyramidal complexes with different apical ligands was prepared. Crystallographic analyses with the aid of theoretical calcul...
Source: Chemistry, an Asian Journal - January 18, 2024 Category: Chemistry Authors: Koki Ikemoto Akira Miyachi Seungmin Yang Hiroyuki Isobe Source Type: research
Recent Progress on Tumor Microenvironment-Activated NIR-II Phototheranostic Agents with Simultaneous Activation for Diagnosis and Treatment
Chem Asian J. 2024 Jan 17:e202301036. doi: 10.1002/asia.202301036. Online ahead of print.ABSTRACTMalignant tumors seriously threaten human life and well-being. Emerging Near-infrared II (NIR-II, 1000-1700 nm) phototheranostic nanotechnology integrates diagnostic and treatment modalities, offering merits including improved tissue penetration and enhanced spatiotemporal resolution. This remarkable progress has opened promising avenues for advancing tumor theranostic research. The tumor microenvironment (TME) differs from normal tissues, exhibiting distinct attributes such as hypoxia, acidosis, overexpressed hydrogen peroxide...
Source: Chemistry, an Asian Journal - January 17, 2024 Category: Chemistry Authors: Hao Xiao Gui-Long Wu Senyou Tan Xiaofeng Tan Qinglai Yang Source Type: research
Palladium-Catalyzed Cyclization/Alkenylation of Ynone Oximes with Vinylsilanes for the Assembly of Isoxazolyl Vinylsilanes
Chem Asian J. 2024 Jan 15:e202301122. doi: 10.1002/asia.202301122. Online ahead of print.ABSTRACTA palladium-catalyzed cascade cyclization/alkenylation for the assembly of synthetically valuable isoxazolyl vinylsilane derivative has been accomplished. Easily accessible ynone oximes, and available vinylsilane agents were used as the reaction starting materials This protocol features broad substrate scope, good functional group tolerance, and good step- and atom-economy. Remarkably, this approach provides a new approach for the construction of structurally diverse isoxazolyl-containing vinylsilanes with high molecular comple...
Source: Chemistry, an Asian Journal - January 15, 2024 Category: Chemistry Authors: Jianxiao Li Chenjing Hong Yanan Niu Bowen Wang Huanfeng Jiang Source Type: research
Interfacial Activity of Janus Particle: Unity of Molecular Surfactant and Homogeneous Particle
Chem Asian J. 2024 Jan 14:e202301078. doi: 10.1002/asia.202301078. Online ahead of print.ABSTRACTJanus particles with different compositions and properties segmented to different regions on the surface of one objector provide more opportunities for interfacial engineering. As a novel interfacial active material, Janus particles integrate the amphiphilic properties of molecular surfactants and the Pickering effect of homogeneous particles. In this research, the outstanding properties of Janus particles on various interfaces are examined from both theoretical and practical perspectives, and the advantages of Janus particles ...
Source: Chemistry, an Asian Journal - January 14, 2024 Category: Chemistry Authors: Haipeng Liu Yingchun Long Fuxin Liang Source Type: research
Water vs. Organic Solvents: Water-Controlled Divergent Reactivity of 2-Substituted Indoles
Chem Asian J. 2024 Jan 13:e202301045. doi: 10.1002/asia.202301045. Online ahead of print.ABSTRACTWater is not a good solvent for most organic compounds, yet water can offer many benefits to some organic reactions, hence enriching organic chemistry. Herein, the unique divergent reactivity of 2-substituted indoles with •NO sources is presented. The amount of water solvent was harnessed for a scalable, benign, and expedient synthesis of indolenine oximes, albeit with water's inability to dissolve the reactants. 2-Methoxyethyl nitrite, which has been tailored for reactions in water, empowered this protocol by enhancing the p...
Source: Chemistry, an Asian Journal - January 13, 2024 Category: Chemistry Authors: Airu Hashidoko Taku Kitanosono Yasuhiro Yamashita Shu Kobayashi Source Type: research
Cascade Synthesis of New Indole-Containing Pentacyclic Scaffolds Mediated by Aryl and Iminyl Radicals
Chem Asian J. 2024 Jan 13:e202301111. doi: 10.1002/asia.202301111. Online ahead of print.ABSTRACTA five-step approach, starting from simple 1,5-disubstituted indoles, has been implemented for the synthesis of diversely substituted indole-pyrido-indene pentacyclic compounds up to 54 % yield via domino radical-mediated processes in the presence of the radical reagents DLP/TTMSS and AIBN/TTMSS. Reactions proceeded with diverse key starting radical cyano-precursors strategically synthesized which were subsequently transformed into the target pentacyclic compounds through an aryl/iminyl radical-mediated domino reactions sequenc...
Source: Chemistry, an Asian Journal - January 13, 2024 Category: Chemistry Authors: Rodrigo Abonia Andres C Garc ía Eduin A Hurtado Luz M Jaramillo-G ómez Braulio Insuasty Jairo Quiroga Manuel Nogueras Justo Cobo Source Type: research
Mesomorphism Modulation of Perfluorinated Janus Triphenylenes by Inhomogeneous Chain Substitution Patterns
Chem Asian J. 2024 Feb 1;19(3):e202301080. doi: 10.1002/asia.202301080. Epub 2024 Jan 29.ABSTRACTTwo isomeric series of compounds with "inverted" chains' substitution patterns, 7,10-dialkoxy-1,2,3,4-tetrafluoro-6,11-dimethoxytriphenylene and 6,11-dialkoxy-1,2,3,4-tetrafluoro-7,10-dimethoxytriphenylene, labelled respectively p-TPFn and m-TPFn, and two non-fluorinated homologous isomers, 3,6-dibutoxy-2,7-dimethoxytriphenylene and 2,7-dibutoxy-3,6-dimethoxytriphenylene, p-TP4 and m-TP4, respectively, were synthesized in three steps and obtained in good yields by the efficient transition-metal-free, fluoroarene nucleophilic su...
Source: Chemistry, an Asian Journal - January 12, 2024 Category: Chemistry Authors: Kai-Li Zhang Wen-Hao Yu Ke-Qing Zhao Ping Hu Bi-Qin Wang Bertrand Donnio Source Type: research
Superhydrophilic and oleophobic sponges prepared based on Mussel-Inspired chemistry for efficient oil-water separation
Chem Asian J. 2024 Feb 1;19(3):e202300962. doi: 10.1002/asia.202300962. Epub 2024 Jan 22.ABSTRACTSuperhydrophilic/oleophobic materials are considered to be the best materials for achieving oil-water separation, but their preparation is difficult and the existing methods are not universal. In this paper, a two-step modification strategy was used to prepare superhydrophilic/oleophobic sponges by adjusting the polar and nonpolar components of the materials using mussel-inspired chemistry. While remaining superhydrophilic, the modified sponge surface has a maximum contact angle of 135° with different oils in air. The modified...
Source: Chemistry, an Asian Journal - January 12, 2024 Category: Chemistry Authors: Jianteng Sun Feng Gao Jingwen Hu Zhixian Qi Yue Huang Yonggui Guo Ying Chen Junfu Wei Huan Zhang Qianchan Pang Huicai Wang Xiaoqing Zhang Source Type: research
Ferrocene-Boosted Nickel Sulfide Nanoarchitecture for Enhanced Alkaline Water Splitting
Chem Asian J. 2024 Jan 12:e202301051. doi: 10.1002/asia.202301051. Online ahead of print.ABSTRACTEnhanced electrocatalysts that are cost-effective, durable, and derived from abundant resources are imperative for developing efficient and sustainable electrochemical water-splitting systems to produce hydrogen. Therefore, the design and development of non-noble-based catalysts with more environmentally sustainable alternatives in efficient alkaline electrolyzers are important. This work reports ferrocene (Fc)-incorporated nickel sulfide nanostructured electrocatalysts (Fc-NiS) using a one-step facile solvothermal method for w...
Source: Chemistry, an Asian Journal - January 12, 2024 Category: Chemistry Authors: Abeera Hassan Hafiza Komal Zafar Raja Shahid Ashraf Muhammad Arfan Mohammad Rezaul Karim Md A Wahab Manzar Sohail Source Type: research
Chemical Methods to Identify Epigenetic Modifications in Cytosine Bases
Chem Asian J. 2024 Feb 1;19(3):e202301005. doi: 10.1002/asia.202301005. Epub 2024 Jan 25.ABSTRACTChemical modifications to Cytosine bases are among the most studied epigenetic markers and their detection in the human genome plays a crucial role in gaining more insights about gene regulation, prognosis of genetic disorders and unraveling genetic inheritance patterns. The Cytosine methylated at the 5th position and oxidized derivatives thereof generated in the demethylation pathways, perform separate and unique epigenetic functions in an organism. As the presence of various Cytosine modifications is associated with diverse d...
Source: Chemistry, an Asian Journal - January 11, 2024 Category: Chemistry Authors: Madhumitha N Parvathy S Kumar Debasish Manna Source Type: research
