Organocatalytic access to 3-pyridylphosphonates from vinyl phosphonates and aldehydes
Chem Commun (Camb). 2024 Apr 26. doi: 10.1039/d4cc00131a. Online ahead of print.ABSTRACTThe preparation of 3-phosphorylated pyridines has remained the most challenging compared to the corresponding 2- or 4-functionalized pyridines. Herein, an unprecedented amino-organocatalyzed direct synthesis of 3-pyridylphosphonates from vinylphosphonates and aldehydes has been achieved. This allows access to a wide range of multi-substituted phosphorylated pyridines in excellent yields under transition metal-free conditions.PMID:38666411 | DOI:10.1039/d4cc00131a (Source: Chemical Communications)
Source: Chemical Communications - April 26, 2024 Category: Chemistry Authors: Ram Subhawan Verma Anil Kumar Khatana Deepika Verma Bhoopendra Tiwari Source Type: research
Cold denaturation of DNA origami nanostructures
Chem Commun (Camb). 2024 Apr 26. doi: 10.1039/d3cc05985e. Online ahead of print.ABSTRACTThe coupling of structural transitions to heat capacity changes leads to destabilization of macromolecules at both elevated and lowered temperatures. DNA origami not only exhibit this property but also provide a nanoscopic observable of cold denaturation processes by directing intramolecular strain to the most sensitive elements within their hierarchical architecture.PMID:38666465 | DOI:10.1039/d3cc05985e (Source: Chemical Communications)
Source: Chemical Communications - April 26, 2024 Category: Chemistry Authors: Daniel Dornbusch Marcel Hanke Emilia Tomm Charlotte Kielar Guido Grundmeier Adrian Keller Karim Fahmy Source Type: research
Catalytic ability characterization of < em > in situ < /em > synthesized Pt NP coated SBA-15 within a sub-micropipette
Chem Commun (Camb). 2024 Apr 26. doi: 10.1039/d4cc01079e. Online ahead of print.ABSTRACTAn individual catalytic entity of an n-Pt/SBA-15 composite was synthesized in situ within a sub-micropipette nanoreactor, and its size-dependent catalytic ability was evaluated using the resistance pulse signals of O2 nanobubbles, originating from H2O2 decomposition catalyzed by decorated Pt NPs in the composite.PMID:38666500 | DOI:10.1039/d4cc01079e (Source: Chemical Communications)
Source: Chemical Communications - April 26, 2024 Category: Chemistry Authors: Rui Zhang Qiang Zeng Min Wang Lishi Wang Source Type: research
Integrating recombinase polymerase amplification with CRISPR/Cas9-initiated nicking-rolling circle amplification in < em > Staphylococcus aureus < /em > assay
Chem Commun (Camb). 2024 Apr 26. doi: 10.1039/d4cc00238e. Online ahead of print.ABSTRACTWe integrate recombinase polymerase amplification (RPA) with CRISPR/Cas9-initiated nicking rolling circle amplification (CRISPR/Cas9-nRCA) for detecting Staphylococcus aureus. This approach utilizes a unique dimeric G-triplex structure, demonstrating firstly enhanced ThT fluorescence for target detection. The proof-of-concept study introduces a new avenue for integrating isothermal amplifications with CRISPR/Cas9 in the fields of pathogen detection and disease diagnosis.PMID:38666524 | DOI:10.1039/d4cc00238e (Source: Chemical Communications)
Source: Chemical Communications - April 26, 2024 Category: Chemistry Authors: Jianguo Xu Tong Zhou Danni Xue Zhuqi Sui Haidong Yang Xinyue Yuan Qi Wang Source Type: research
Preparation of novel membranes with multiple hydrogen bonding sites and π-conjugated structure for high temperature proton exchange membrane fuel cells
Chem Commun (Camb). 2024 Apr 26. doi: 10.1039/d4cc01089b. Online ahead of print.ABSTRACTA novel poly(dibenzofuran isatin) (PBFI) with π conjugated structure was synthesized. Through the facile ring-opening reaction, flexible and hydrophilic side chains with hydroxyl and quaternary ammounium groups were grafted into PBFI. Obtained PBFI-x%GTA membranes with twisted polymer structure and multiple hydrogen bonding sites displayed high HT-PEMFC performance.PMID:38666525 | DOI:10.1039/d4cc01089b (Source: Chemical Communications)
Source: Chemical Communications - April 26, 2024 Category: Chemistry Authors: Qian Wang Lele Wang Meichen Zhang Zhen Peng Yao Lu Peiru Lv Jingshuai Yang Source Type: research
An NIR-II-emitting type-I photosensitizer for efficient hypoxic tumor phototheranostics
Chem Commun (Camb). 2024 Apr 26. doi: 10.1039/d4cc00431k. Online ahead of print.ABSTRACTA small molecule-based NIR-II type-I photosensitizer (IT-IC) with a strong push-pull effect and good planar π-conjugated structure was synthesized. The IT-IC NPs exhibited strong light absorption, outstanding NIR-II fluorescence emission, excellent photothermal conversion and efficient type-I/II ROS generation, showing encouraging therapeutic outcomes for hypoxic tumors.PMID:38666540 | DOI:10.1039/d4cc00431k (Source: Chemical Communications)
Source: Chemical Communications - April 26, 2024 Category: Chemistry Authors: Qi Wang Ruoqing Wang Xiaoyuan Wang Mingxuan Fu Yicong Gao Jianfeng Feng Renyong Geng Zhen Yuan Quli Fan Feng Lu Source Type: research
Gold-catalyzed benzannulations of 2-alkenylindoles with alkynes: a protecting-group-free regioselective approach to carbazoles
Chem Commun (Camb). 2024 Apr 26. doi: 10.1039/d4cc00176a. Online ahead of print.ABSTRACTA gold(I)-catalyzed protecting-group-free benzannulation approach to functionalized NH-carbazoles was accomplished via the hydroarylation of alkynes with 2-alkenylindoles. A broad spectrum of terminal and internal alkynes and 2-alkenylindoles successfully participated in this annulation reaction. The protocol efficiently enabled the formation of substituted NH-carbazoles with moderate to specific regioselectivities. The synthetic utility of this protocol was demonstrated by a variety of post-functionalizations.PMID:38666614 | DOI:10.103...
Source: Chemical Communications - April 26, 2024 Category: Chemistry Authors: Pathan Mosim Amin Weilin Wang Chao Wang Junrui Zhou Youliang Wang Source Type: research
Biphasic water-oil systems for functional augmentation of probiotic < em > Lactobacillus acidophilus < /em > nanoencapsulated in luteolin-Fe < sup > 3+ < /sup > shells
Chem Commun (Camb). 2024 Apr 26. doi: 10.1039/d4cc01603c. Online ahead of print.ABSTRACTSingle-cell nanoencapsulation (SCNE) has great potential in the enhancement of therapeutic effects of probiotic microbes. However, the material scope has been limited to water-soluble compounds to avoid non-biocompatible organic solvents that are harmful to living cells. In this work, the SCNE of probiotic Lactobacillus acidophilus with water-insoluble luteolin and Fe3+ ions is achieved by the vortex-assisted, biphasic water-oil system. The process creates L. acidophilus nanoencapsulated in the luteolin-Fe3+ shells that empower the cell...
Source: Chemical Communications - April 26, 2024 Category: Chemistry Authors: Duc Tai Nguyen Sang Yeong Han Filip Kozlowski Gulaim A Seisenbaeva Vadim G Kessler Beom Jin Kim Insung S Choi Source Type: research
Photoredox-catalyzed alkylarylation of activated alkenes < em > via < /em > a ring-opening/Truce-Smiles rearrangement cascade
Chem Commun (Camb). 2024 Apr 26. doi: 10.1039/d4cc01324g. Online ahead of print.ABSTRACTA photoredox-catalyzed alkylarylation of activated alkenes via a radical C-C bond cleavage/Truce-Smiles rearrangement cascade is developed. The protocol features mild and redox-neutral conditions, broad substrate scope and excellent functional group compatibility, providing a facile and efficient approach to the long-chain distal keto-amides with all-carbon quaternary centers at the alpha position.PMID:38668748 | DOI:10.1039/d4cc01324g (Source: Chemical Communications)
Source: Chemical Communications - April 26, 2024 Category: Chemistry Authors: Jin-Hua Zhang Hong-Jie Miao Hong Xin Gang Wang Xiaoyu Yang Xianjun Wang Pin Gao Xin-Hua Duan Li-Na Guo Source Type: research
Ultralong-life and high-capacity magnesium/sodium hybrid-ion battery using a ternary CoSe/NiSe < sub > 2 < /sub > /CuSe < sub > 2 < /sub > cathode and dual-ion electrolyte
Chem Commun (Camb). 2024 Apr 26. doi: 10.1039/d4cc00623b. Online ahead of print.ABSTRACTAn ultrahigh-performance magnesium/sodium hybrid-ion battery (MNHB) is developed using ternary CoSe/NiSe2/CuSe2 (CNCS) "micro-flowers" as cathode materials, working with a coordinative [Mg2Cl2][AlCl4]2 and bis(trifluoroethylsulfonyl)imide anionic sodium salt in triglyme electrolyte. After 2000 cycles at 2.0 A g-1, the MNHB shows a stable capacity of 115.5 mA h g-1 and a high Coulombic efficiency exceeding 99.8%. The battery shows very rapid charging, and good stability in extreme environments, providing new opportunities to develop othe...
Source: Chemical Communications - April 26, 2024 Category: Chemistry Authors: Ting Zhou Yajun Zhu Yun Shen Hui Qiu Tianli Han Jinjin Li Jinyun Liu Source Type: research
Harnessing solid-state ion exchange for the environmentally benign synthesis of high-efficiency Mn < sup > 4+ < /sup > -doped phosphors
In this study, a solid-state ion exchange (SSIE) method is proposed to synthesize a series of Mn4+-doped fluoride phosphors, which avoids the use of HF solution during the Mn4+-doping process. The obtained Mn4+-doped fluoride phosphors exhibit strong red emission with a quantum yield of 46%.PMID:38669112 | DOI:10.1039/d4cc01530d (Source: Chemical Communications)
Source: Chemical Communications - April 26, 2024 Category: Chemistry Authors: Changyuan Lu Wenwu You Source Type: research
Supramolecularly modulated carbon-centered radicals: toward selective oxidation from benzyl alcohol to aldehyde
Chem Commun (Camb). 2024 Apr 25. doi: 10.1039/d4cc01240b. Online ahead of print.ABSTRACTThe reactivity of ketyl radicals and benzoyl radicals, two key intermediates of photo-induced oxidation of benzyl alcohol, can be stabilized by the host-guest interaction of the radicals with cucurbit[7]uril. As a result, the selectivity of photo-induced oxidation from benzyl alcohol to aldehyde is significantly improved by diminishing side reactions and inhibiting the generation of carboxylic acid products. This work presents a new route to modulate the reactivity of radical intermediates, enriching the chemistry of supramolecular inte...
Source: Chemical Communications - April 25, 2024 Category: Chemistry Authors: Xingchen Tang Shan Mei Jiang-Fei Xu Xi Zhang Source Type: research
Gram-scale synthesis of small-sized PtM intermetallics as high-performance catalysts for the hydrogen evolution reaction
Chem Commun (Camb). 2024 Apr 25. doi: 10.1039/d4cc00849a. Online ahead of print.ABSTRACTPt-based intermetallics exhibit excellent activity in electrocatalysis. However, their controlled syntheses remain difficult. Herein, carbon-supported PtM (M = Fe, Co, Ni, Zn and Mn) intermetallics with small size (3 nm) were prepared at the gramscale and applied as a highly effective electrocatalyst for the hydrogen evolution reaction.PMID:38659401 | DOI:10.1039/d4cc00849a (Source: Chemical Communications)
Source: Chemical Communications - April 25, 2024 Category: Chemistry Authors: Bentian Zhang Lijie Zhang Han Yang Mengtao Shan Lei Bai Zirong Li Ming Sun Source Type: research
Organic hole transport materials for high performance PbS quantum dot solar cells
Chem Commun (Camb). 2024 Apr 25. doi: 10.1039/d4cc01194e. Online ahead of print.ABSTRACTWe developed a triazatruxene-based hole transport material (HTM), 3Ka-DBT-3Ka, aiming to enhance band alignment and augment charge generation and collection in devices, as an alternative for 1,2-ethanedithiol (EDT). The PbS CQD solar cells employing 3Ka-DBT-3Ka as the HTM achieve a peak efficiency of 11.4%, surpassing devices employing the conventional PbS-EDT HTM (8.9%).PMID:38659410 | DOI:10.1039/d4cc01194e (Source: Chemical Communications)
Source: Chemical Communications - April 25, 2024 Category: Chemistry Authors: Li Zhang Shunqiang Wang Yi Shi Jiazi Xu Shuang Cao Zijian Deng Yong Chen Junjie Zhang Xichuan Yang Zhen Meng Quli Fan Bin Sun Source Type: research
Enabling wide temperature battery operation with hybrid lithium electrolytes
Chem Commun (Camb). 2024 Apr 25. doi: 10.1039/d4cc01110d. Online ahead of print.ABSTRACTWe demonstrate that an ionic liquid 1-ethyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide combined with propylene carbonate and lithium bis(trifluoromethanesulfonyl)imide yields a hybrid electrolyte that enables a wide operational temperature window (-20 °C to 60 °C). When integrated into a lithium titanate‖lithium cobalt oxide full-cell configuration, high-rate capability is achieved at -20 °C with >40% retention at a C/2 cycling rate, and negligible capacity fade is observed during rate capability tests and long-term...
Source: Chemical Communications - April 25, 2024 Category: Chemistry Authors: Spencer A Langevin Tanner Hamann Courtney McHale Jesse S Ko Source Type: research
