Janus MXene nanosheets with a strain-induced reversible magnetic state transition for storing information without electricity
Chem Commun (Camb). 2024 Apr 4. doi: 10.1039/d4cc00112e. Online ahead of print.ABSTRACTThe application of strain induces a transition in the ground-state magnetic configuration of Janus TiVC MXene from A-AFM to FM. A new system and method of solid-state disk information storage without electricity is developed based on the as-discovered reversible magnetic state transition in TiVC, which can achieve efficient storage of information in extremely harsh conditions.PMID:38573313 | DOI:10.1039/d4cc00112e (Source: Chemical Communications)
Source: Chemical Communications - April 4, 2024 Category: Chemistry Authors: Hengyue Zhang Guoqing Wang Bayu Admasu Beshiwork Birkneh Sirak Teketel Baihai Li Bin Lin Source Type: research
Radical hydroboration for the synthesis of organoboron compounds
Chem Commun (Camb). 2024 Apr 3. doi: 10.1039/d4cc00398e. Online ahead of print.ABSTRACTOrganoboron compounds demonstrate diverse applications in the fields of organic synthesis, materials science, and medicinal chemistry. Compared to the conventional hydroboration reaction, radical hydroboration serves as an alternative approach for the synthesis of organoborons via different mechanisms. In radical hydroboration, a boryl radical is initially generated from homolytic cleavage of a B-H or a B-B bond, which is then added to an unsaturated double bond to deliver a carbon radical. Subsequent hydrogen atom transfer or reduction ...
Source: Chemical Communications - April 3, 2024 Category: Chemistry Authors: Yee Lin Phang Ji-Kang Jin Feng-Lian Zhang Yi-Feng Wang Source Type: research
Superoxide dismutase nanozymes: current status and future perspectives on brain disease treatment and diagnosis
Chem Commun (Camb). 2024 Apr 3. doi: 10.1039/d3cc06288k. Online ahead of print.ABSTRACTSuperoxide dismutase (SOD) is an important metalloenzyme that catalyzes the dismutation of superoxide radicals (O2˙-) into hydrogen peroxide (H2O2) and oxygen (O2). However, the clinical application of SOD is severely limited due to its structural instability and high cost. Compared with natural enzymes, nanomaterials with enzyme-like activity, nanoenzymes, are more stable, economical and easy to modify and their activity can be adjusted. Certain nanozymes that exhibit SOD-like activity have been created and shown to help prevent illnes...
Source: Chemical Communications - April 3, 2024 Category: Chemistry Authors: Ying Chen Bo Li Kai Li Yuqing Lin Source Type: research
Nanopore sensitization based on a double loop hybridization chain reaction and G-quadruplex
In this study, we've developed a nucleic acid amplifier to enhance the sensitivity of solid-state nanopores, utilizing a G-rich sequence and hybridization chain reaction. This amplifier improves target concentration and volume amplification, showing promise in nanopore sensitivity tests.PMID:38567405 | DOI:10.1039/d4cc00125g (Source: Chemical Communications)
Source: Chemical Communications - April 3, 2024 Category: Chemistry Authors: Yanru Li Chunmiao Yu Yesheng Wang Jin Yu Huaning Wang Bingling Li Source Type: research
Molecular recognition and proteoglycan mimic arrangement: modulating cisplatin toxicity
Chem Commun (Camb). 2024 Apr 3. doi: 10.1039/d4cc00464g. Online ahead of print.ABSTRACTWe have demonstrated that cisplatin (CP), an anticancer drug, showed a preference for binding the sulfated-L-iduronic acid (S-L-IdoA) unit over the sulfated-D-glucuronic acid unit of heparan sulfate. The multivalency of S-L-IdoA, such as in the proteoglycan mimic, resulted in distinct modes of cell-surface engineering in normal and cancer cells, with these disparities having a significant impact on CP-mediated toxicity.PMID:38567462 | DOI:10.1039/d4cc00464g (Source: Chemical Communications)
Source: Chemical Communications - April 3, 2024 Category: Chemistry Authors: Saurabh Anand Sandhya Mardhekar Preeti Ravindra Bhoge Sandeep Kumar Mishra Raghavendra Kikkeri Source Type: research
Planar-chiral arene ruthenium complexes: synthesis, separation of enantiomers, and application for catalytic C-H activation
Chem Commun (Camb). 2024 Apr 3. doi: 10.1039/d4cc00181h. Online ahead of print.ABSTRACTHeating tert-butyl-tetraline with [(p-cymene)RuCl2]2 produces the racemic complex [(arene)RuCl2]2, which can be separated into enantiomers by chromatography of its diastereomeric adducts with chiral phosphine ligand. The resolved chiral complex catalyzes C-H activation of N-methoxy-benzamides and their annulation with N-vinyl-pivaloyl amide giving dihydroisoquinolones in 50-80% yields and with 40-80% enantiomeric excess.PMID:38567466 | DOI:10.1039/d4cc00181h (Source: Chemical Communications)
Source: Chemical Communications - April 3, 2024 Category: Chemistry Authors: Mikhail A Boym Roman A Pototskiy Evgeniya S Podyacheva Denis A Chusov Yulia V Nelyubina Dmitry S Perekalin Source Type: research
Going for gold - the chemistry of structurally authenticated gold(I)-ethylene complexes
Chem Commun (Camb). 2024 Apr 3. doi: 10.1039/d4cc00676c. Online ahead of print.ABSTRACTGold coordination chemistry and catalysis involving unsaturated hydrocarbons such as olefins have experienced a remarkable growth during the last few decades. Despite the importance, isolable and well-characterized molecules with ethylene, the simplest and the most widely produced olefin, on gold are still limited. This review aims to cover features of, and strategies utilized to stabilize, gold-ethylene complexes and their diverse use in chemical transformations and homogeneous catalytic processes. Isolable and well-authenticated gold-e...
Source: Chemical Communications - April 3, 2024 Category: Chemistry Authors: Brandon T Watson H V Rasika Dias Source Type: research
Fluorenyl-tethered N-heterocyclic carbene (NHC): an exclusive C-donor ligand for heteroleptic calcium and strontium chemistry
We report herein the aptitude of a combination of NHC with fluorenyl connected by a flexible -(CH2)2- linker as a ligand support for heteroleptic Ca- and Sr-N(SiMe3)2 and iodides. The Ca-N(SiMe3)2 complex even catalyzes the intramolecular hydroamination of aminoalkenes to showcase the effectiveness of this ligand framework.PMID:38568715 | DOI:10.1039/d4cc00397g (Source: Chemical Communications)
Source: Chemical Communications - April 3, 2024 Category: Chemistry Authors: Sumana Mondal Subham Sarkar Chhotan Mandal Dibyendu Mallick Debabrata Mukherjee Source Type: research
Unravelling the underlying mechanism of the reduction of aldehydes/ketones with metal borohydride in an aprotic solvent
Chem Commun (Camb). 2024 Apr 3. doi: 10.1039/d3cc06108f. Online ahead of print.ABSTRACTThe reduction mechanism of aldehyde/ketones with M(BH4)n is not fully understood, even though the hydroboration mechanism of weak Lewis base borane complexes is known to involve a four-membered ring transition state. Herein, the reduction mechanism of M(BH4)n in aprotic solvents has been elucidated for a six-membered ring, in which hydride transfer to the C atom from the B atom, formation of an L·BH3 adduct, and disproportionation of (BH3(OR)-) borane are involved. The metal cations and solvents participate in and significantly influenc...
Source: Chemical Communications - April 3, 2024 Category: Chemistry Authors: Xinying Li Jia-Xin Kang Shasha Liang Xi-Hong Long Yan-Na Ma Xuenian Chen Source Type: research
Stereocontrol in an intermolecular Schmidt reaction of equilibrating hydroxyalkyl allylic azides
Chem Commun (Camb). 2024 Apr 2. doi: 10.1039/d4cc00907j. Online ahead of print.ABSTRACTA selective intermolecular Schmidt reaction of equilibrating hydroxyalkyl allylic azides is reported to afford N-hydroxyalk-1-en-3-yl lactams in modest to high yields. For prochiral and chiral ketones, modest to high 1,5-diastereoselectivity was achieved, and the mechanistic analysis is supported by DFT calculation.PMID:38563154 | DOI:10.1039/d4cc00907j (Source: Chemical Communications)
Source: Chemical Communications - April 2, 2024 Category: Chemistry Authors: Ruzhang Liu Juan Wang Hao Wu Xianfeng Quan Shilin Wang Jiandong Guo Yang Wang Heting Li Source Type: research
BODIPY phototether enables oligonucleotide cyclization and subsequent deprotection by tissue-transparent red light
Chem Commun (Camb). 2024 Apr 2. doi: 10.1039/d4cc00272e. Online ahead of print.ABSTRACTmeso-methyl-BODIPY photocages release a leaving group upon visible light irradiation but often lack thermal stability. In turn, our thermally-stable, red-shifted BODIPY phototether allows oligonucleotide cyclization, preventing complementary strand hybridization. Hybridization resumes upon red-NIR irradiation, disconnecting the phototether by oxidative cleavage, which is easily monitored by a blue shift in fluorescence.PMID:38563214 | DOI:10.1039/d4cc00272e (Source: Chemical Communications)
Source: Chemical Communications - April 2, 2024 Category: Chemistry Authors: Lucie Wohlr ábová Marlen Sahlbach Alexander Heckel Tom áš Slanina Source Type: research
Photoredox-catalyzed radical-radical cross coupling of ketyl radicals with unstabilized primary alkyl radicals
Chem Commun (Camb). 2024 Apr 2. doi: 10.1039/d4cc00620h. Online ahead of print.ABSTRACTHerein, a novel protocol dealing with the preparation of sterically hindered alcohols has been successfully developed via radical-radical coupling reactions enabled by mild and redox-neutral photocatalysis. With alkylsilicates as the radical precursors, a range of primary alkyl radicals bearing various functional groups could couple with a range of phthalimides and activated ketones.PMID:38563261 | DOI:10.1039/d4cc00620h (Source: Chemical Communications)
Source: Chemical Communications - April 2, 2024 Category: Chemistry Authors: Shishen Feng Hong Liu Yan Li Yewen Fang Source Type: research
RNase H-dependent DNA thresholder modulated by cancer marker concentration
Chem Commun (Camb). 2024 Apr 2. doi: 10.1039/d4cc00495g. Online ahead of print.ABSTRACTThreshold antisense oligonucleotide constructs were designed to cleave mRNA within different biomarker concentrations. The mRNA cleavage is activated by 2.6, 7.5 or 39.5 nM of biomarker depending on the construct design. The constructs can be used to differentiate cancer from normal cells by the level of oncogene expression followed by silencing of a targeted gene.PMID:38563262 | DOI:10.1039/d4cc00495g (Source: Chemical Communications)
Source: Chemical Communications - April 2, 2024 Category: Chemistry Authors: Moustapha A Y Nour Valeriia S Drozd Evgenii A Lemeshko Lilia Tafran Adeliia A Salimova Alexandra V Kulikova Ahmed A Eldeeb Source Type: research
Production of hydrogen from alcohols < em > via < /em > homogeneous catalytic transformations mediated by molecular transition-metal complexes
Chem Commun (Camb). 2024 Apr 2. doi: 10.1039/d4cc00594e. Online ahead of print.ABSTRACTHydrogen obtained from renewable sources such as water and alcohols is regarded as an efficient clean-burning alternative to non-renewable fuels. The use of the so-called bio-H2 regardless of its colour will be a significant step towards achieving global net-zero carbon goals. Challenges still persist however with conventional H2 storage, which include low-storage density and high cost of transportation apart from safety concerns. Global efforts have thus focussed on liquid organic hydrogen carriers (LOHCs), which have shown excellent po...
Source: Chemical Communications - April 2, 2024 Category: Chemistry Authors: Akshara Bisarya Suhana Karim Himani Narjinari Anwesha Banerjee Vinay Arora Sunil Dhole Arnab Dutta Akshai Kumar Source Type: research
CuNi sulphidation maximizes MOR activity by expanding the accessibility of active sites!
Chem Commun (Camb). 2024 Apr 2. doi: 10.1039/d3cc05603a. Online ahead of print.ABSTRACTSulphidation of a CuNi alloy of Cu : Ni ratio 81 : 19 led to an exponential activity enhancement in the alkaline methanol oxidation reaction (MOR) by four fold due to an order of magnitude increase in the number of active Cu and Ni sites and improved charge transfer properties.PMID:38563393 | DOI:10.1039/d3cc05603a (Source: Chemical Communications)
Source: Chemical Communications - April 2, 2024 Category: Chemistry Authors: Roshini Arulraj Karthik Eswaran Sara Fidha C M Rajini Murugesan Silda Peters Arthanareeswari Maruthapillai Sethumathavan Vadivel Rajendra Kumar Konidena Tumpa Sadhukhan Anantharaj Sengeni Source Type: research
