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Journals Topics in Current Chemistry (J...

Topics in Current Chemistry (Journal)

https://read.qxmd.com/read/37610550/recent-progress-on-nitrogen-rich-energetic-materials-based-on-tetrazole-skeleton
#21
REVIEW
Bihai Chen, Han Lu, Jiayi Chen, Zhaoxu Chen, Shuang-Feng Yin, Lifen Peng, Renhua Qiu
Development of nitrogen-rich energetic materials has gained much attention because of their remarkable properties including large nitrogen content and energy density, good thermal stability, low sensitivity, good energetic performance, environmental friendliness and so on. Tetrazole has the highest nitrogen and highest energy contents among the stable azoles. The incorporation of diverse explosophoric groups or substituents into the tetrazole skeleton is beneficial to obtain high-nitrogen energetic materials having excellent energetic performance and suitable sensitivity...
August 23, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37480375/performance-regulation-of-single-atom-catalyst-by-modulating-the-microenvironment-of-metal-sites
#22
REVIEW
Hanyu Hu, Yanyan Zhao, Yue Zhang, Jiangbo Xi, Jian Xiao, Sufeng Cao
Metal-based catalysts, encompassing both homogeneous and heterogeneous types, play a vital role in the modern chemical industry. Heterogeneous metal-based catalysts usually possess more varied catalytically active centers than homogeneous catalysts, making it challenging to regulate their catalytic performance. In contrast, homogeneous catalysts have defined active-site structures, and their performance can be easily adjusted by modifying the ligand. These characteristics lead to remarkable conceptual and technical differences between homogeneous and heterogeneous catalysts...
July 22, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37474812/recent-progress-in-nih-catalyzed-linear-or-branch-hydrofunctionalization-of-terminal-or-internal-alkenes
#23
REVIEW
Huimin Yang, Yang Ye
The construction of C-C and C-X (X = N, O, Si, etc.) bonds is an important field in organic synthesis and methodology. In recent decades, studies on transition metal-catalyzed functionalization of alkenes have been on the rise. The individual properties of different transition metals determine the type of reaction that can be applied. Generally, post-transition metals with a large number of electrons in the d-orbit such as Mn, Fe, Co, Ni, Cu and Zn, etc., can be applied to more reaction types than pre-transition metals with a small number of electrons (e...
July 20, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37318607/structure-based-drug-design-of-rdrp-inhibitors-against-sars-cov-2
#24
REVIEW
Kiran Shehzadi, Afsheen Saba, Mingjia Yu, Jianhua Liang
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused a worldwide pandemic since 2019, spreading rapidly and posing a significant threat to human health and life. With over 6 billion confirmed cases of the virus, the need for effective therapeutic drugs has become more urgent than ever before. RNA-dependent RNA polymerase (RdRp) is crucial in viral replication and transcription, catalysing viral RNA synthesis and serving as a promising therapeutic target for developing antiviral drugs...
June 15, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37253819/photothermal-catalytic-co-2-conversion-beyond-catalysis-and-photocatalysis
#25
REVIEW
Fernando Fresno, Ana Iglesias-Juez, Juan M Coronado
In recent years, the combination of both thermal and photochemical contributions has provided interesting opportunities for solar upgrading of catalytic processes. Photothermal catalysis works at the interface between purely photochemical processes, which involve the direct conversion of photon energy into chemical energy, and classical thermal catalysis, in which the catalyst is activated by temperature. Thus, photothermal catalysis acts in two different ways on the energy path of the reaction. This combined catalysis, of which the fundamental principles will be reviewed here, is particularly promising for the activation of small reactive molecules at moderate temperatures compared to thermal catalysis and with higher reaction rates than those attained in photocatalysis, and it has gained a great deal of attention in the last years...
May 30, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37249641/the-intramolecular-povarov-tool-in-the-construction-of-fused-nitrogen-containing-heterocycles
#26
REVIEW
Carme Masdeu, Jesús M de Los Santos, Francisco Palacios, Concepción Alonso
Nitrogen heterocycles are part of the structure of natural products and agents with important biological activity, such as antiviral, antibiotic, and antitumor drugs. For this reason, heterocyclic compounds are one of today's most desirable synthetic targets and the Povarov reaction is a powerful synthetic tool for the construction of highly functionalized heterocyclic systems. This process involves an aromatic amine, a carbonyl compound, and an olefin or acetylene to give rise to the formation of a nitrogen-containing heterocycle...
May 30, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37237061/multicomponent-reactions-using-c-n-binucleophilic-nature-of-aminopyrazoles-construction-of-pyrazole-fused-heterocycles
#27
REVIEW
Tasneem Parvin
Synthesis of pyrazole-fused heterocycles has gained considerable attention in recent years due to their wide applications in medicinal chemistry. Aminopyrazoles are versatile building blocks for the synthesis of pyrazole-fused heterocycles by multicomponent reactions. Due to the presence of multiple reaction sites, they have fascinating chemical reactivity. Thus, they have been extensively used in multicomponent reactions for the construction of pyrazole-fused heterocycles. Although few review articles on the preparation and applications of aminopyrazoles are known in the literature, to date there is no dedicated review article on the construction of pyrazole-fused heterocycles exploring the reactivity of amino pyrazoles as C,N-binucleophiles in multicomponent reactions...
May 26, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37212928/laser-induced-transfer-of-functional-materials
#28
REVIEW
Connie Kong Wai Lee, Yexin Pan, Rongliang Yang, Minseong Kim, Mitch Guijun Li
Patterning is crucial for the large-scale application of functional materials. Laser-induced transfer is an emerging patterning method for additively depositing functional materials to the target acceptor. With the rapid development of laser technologies, this laser printing method emerges as a versatile method to deposit functional materials in either liquid or solid format. The emerging applications such as solar interfacial evaporation, solar cells, light-emitting diodes, sensors, high-output synthesis, and other fields are rising fields benefiting from laser-induced transfer...
May 22, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37202650/oxime-esters-flexible-building-blocks-for-heterocycle-formation
#29
REVIEW
Faeze Yousefnejad, Fatemeh Gholami, Bagher Larijani, Mohammad Mahdavi
Oxime esters as the applicable building blocks, internal oxidizing agents, and directing groups in the synthesis of -, S-, and O-containing heterocycle scaffolds have gained great attention in the last decade. This review provides an overview of recent advances in the cyclization of oxime esters with various functional group reagents under transition metal and transition metal-free catalyzed conditions. Moreover, the mechanistic aspects of these protocols are explained in detail.
May 18, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37169979/spectroscopic-determination-of-acetylcholine-ach-a-representative-review
#30
REVIEW
Paweł Świt, Aleksandra Pollap, Joanna Orzeł
Acetylcholine (ACh) is one of the most crucial neurotransmitters of the cholinergic system found in vertebrates and invertebrates and is responsible for many processes in living organisms. Disturbances in ACh transmission are closely related to dementia in Alzheimer's and Parkinson's disease. ACh in biological samples is most often determined using chromatographic techniques, radioenzymatic assays, enzyme-linked immunosorbent assay (ELISA), or potentiometric methods. An alternative way to detect and determine acetylcholine is applying spectroscopic techniques, due to low limits of detection and quantification, which is not possible with the methods mentioned above...
May 11, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37160833/photocatalytic-synthesis-of-hydrogen-peroxide-from-molecular-oxygen-and-water
#31
REVIEW
Patricia Garcia-Munoz, Laura Valenzuela, Deborah Wegstein, Tobias Schanz, Girlie Eunice Lopez, Agnieszka M Ruppert, Hynd Remita, Jonathan Z Bloh, Nicolas Keller
Hydrogen peroxide is a powerful and green oxidant that allows for the oxidation of a wide span of organic and inorganic substrates in liquid media under mild reaction conditions, and forms only molecular water and oxygen as end products. Hydrogen peroxide is therefore used in a wide range of applications, for which the well-documented and established anthraquinone autoxidation process is by far the dominating production method at the industrial scale. As this method is highly energy consuming and environmentally costly, the search for more sustainable synthesis methods is of high interest...
May 9, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37131054/strategies-toward-the-catalyst-free-%C3%AE-c-h-functionalizations-of-tertiary-amines
#32
REVIEW
Mohit L Deb, Pranjal K Baruah
α-C-H functionalization of tertiary amines has been a highly studied field for the past two decades because several important nitrogen containing heterocycles or compounds can be synthesized through this strategy. Though transition metal catalysts and some metal-free catalysts are mainly used for these reactions, a few catalyst-free reactions have recently been efficiently performed. Catalyst-free reactions are cost-effective, less sensitive to air/moisture, easier to operate, have a simple purification process, and are relatively environment-friendly...
May 3, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37103594/solid-state-nanopore-nanochannel-sensing-of-single-entities
#33
REVIEW
Wei Yi, Chuanping Zhang, Qianchun Zhang, Changbo Zhang, Yebo Lu, Lanhua Yi, Xingzhu Wang
Solid-state nanopores/nanochannels, with their high stability, tunable geometry, and controllable surface chemistry, have recently become an important tool for constructing biosensors. Compared with traditional biosensors, biosensors constructed with solid-state nanopores/nanochannels exhibit significant advantages of high sensitivity, high specificity, and high spatiotemporal resolution in the detection single entities (such as single molecules, single particles, and single cells) due to their unique nanoconfined space-induced target enrichment effect...
April 27, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/37029841/synthetic-approaches-biological-activities-and-structure-activity-relationship-of-pyrazolines-and-related-derivatives
#34
REVIEW
Rajnish Kumar, Himanshu Singh, Avijit Mazumder, Salahuddin, Ranjeet Kumar Yadav
It has been established that pyrazolines and their analogs are pharmacologically active scaffolds. The pyrazoline moiety is present in several marketed molecules with a wide range of uses, which has established its importance in pharmaceutical and agricultural sectors, as well as in industry. Due to its broad-spectrum utility, scientists are continuously captivated by pyrazolines and their derivatives to study their chemistry. Pyrazolines or their analogs can be prepared by several synthesis strategies, and the focus will always be on new greener and more economical ways for their synthesis...
April 8, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/36907974/the-rise-of-mxene-a-wonder-2d-material-from-its-synthesis-and-properties-to-its-versatile-applications-a-comprehensive-review
#35
REVIEW
Kamna Chaturvedi, Vaishnavi Hada, Sriparna Paul, Bibek Sarma, Deeksha Malvi, Manish Dhangar, Harsh Bajpai, Anju Singhwane, Avanish Kumar Srivastava, Sarika Verma
MXene, a new member of 2D material, unites the eminence of hydrophilicity, large surface groups, superb flexibility and excellent conductivity. Because of its prodigious characteristics, MXene has gained much approbation among researchers worldwide. MXene's noteworthy features, such as its electrical conductivity, structural property, magnetic behaviour, etc., manifest a broad spectrum of applications, including environment, catalytic, wireless communications, electromagnetic interference (EMI) shielding, drug delivery, wound dressing, bio-imaging, antimicrobial and biosensor...
March 13, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/36826755/conjugates-of-tetrapyrrolic-macrocycles-as-potential-anticancer-target-oriented-photosensitizers
#36
REVIEW
Andrew M Korolchuk, Vladimir A Zolottsev, Alexander Y Misharin
Photodynamic therapy is a minimally invasive treatment of tumors using photosensitizers, light, and reactive oxygen species, which can destroy cellular structures. With the development of photodynamic therapy, significant efforts have been made to create new efficient photosensitizers with improved delivery to cells, stability, and selectivity against cancer tissues. Naturally occurring tetrapyrrolic macrocycles, such as porphyrins and chlorins, are very attractive as photosensitizers, and their structural modification and conjugation with other biologically active molecules are promising approaches for creating new photosensitizers specifically targeting cancer cells...
February 24, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/36729180/critical-analysis-of-hydrogen-production-by-aqueous-methanol-sonolysis
#37
REVIEW
Aissa Dehane, Leila Nemdili, Slimane Merouani, Muthupandian Ashokkumar
Recently, several experimental and theoretical studies have demonstrated the feasibility of enhancing the sonochemical production of hydrogen via methanol pyrolysis within acoustic cavitation bubbles (i.e. sonolysis of aqueous methanol solution). This review includes both the experimental and theoretical achievements in the field of hydrogen production by methanol sonolysis. Additionally, the limits of the process's applicability and plausible solutions are highlighted. The impact of different parameters influencing the process performance is discussed...
February 2, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/36624333/a-modern-look-at-spiropyrans-from-single-molecules-to-smart-materials
#38
REVIEW
Anastasia S Kozlenko, Ilya V Ozhogin, Artem D Pugachev, Maria B Lukyanova, Islam M El-Sewify, Boris S Lukyanov
Photochromic compounds of the spiropyran family have two main isomers capable of inter-switching with UV or visible light. In the current review, we discuss recent advances in the synthesis, investigation of properties, and applications of spiropyran derivatives. Spiropyrans of the indoline series are in focus as the most promising representatives of multi-sensitive spirocyclic compounds, which can be switched by a number of external stimuli, including light, temperature, pH, presence of metal ions, and mechanical stress...
January 10, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/36607442/aryl-and-superaryl-extended-calix-4-pyrroles-from-syntheses-to-potential-applications
#39
REVIEW
Ishfaq Ahmad Rather, Pierre-Edouard Danjou, Rashid Ali
The incorporation of aryl substituents at the meso-positions of calix[4]pyrrole (C4P) scaffolds produces aryl-extended (AE) and super-aryl-extended (SAE) calix[4]pyrroles. The cone conformation of the all-α isomers of "multi-wall" AE-C4Ps and SAE-C4Ps displays deep aromatic clefts or cavities. In particular, "four-wall" receptors feature an aromatic polar cavity closed at one end with four convergent pyrrole rings and fully open at the opposite end. This makes AE- and SAE-C4P scaffolds effective receptors for the molecular recognition of negatively charged ions and neutral guest molecules with donor-acceptor and hydrogen bonding motifs...
January 6, 2023: Topics in Current Chemistry (Journal)
https://read.qxmd.com/read/36574160/promising-nitrogen-doped-graphene-derivatives-a-case-study-for-preparations-fabrication-mechanisms-and-applications-in-perovskite-solar-cells
#40
REVIEW
A G Al-Gamal, Ahmed Mourtada Elseman, T H Chowdhury, K I Kabel, A A Farag, A M Rabie, N E A Abd El-Sattar, Ashraful Islam
Graphene (G) has been a game-changer for conductive optical devices and has shown promising aspects for its implementation in the power industry due to its diverse structures. Graphene has played an essential role as electrodes, hole transport layers (HTLs), electron transport layers (ETLs), and a chemical modulator for perovskite layers in perovskite solar cells (PSCs) over the past decade. Nitrogen-doped graphene (N-DG) derivatives are frequently evaluated among the existing derivatives of graphene because of their versatility of design, easy synthesis process, and high throughput...
December 27, 2022: Topics in Current Chemistry (Journal)
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