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You searched for: Journal Chemical communications Remove constraint Journal: Chemical communications Publication Year 2018 Remove constraint Publication Year: 2018 Source 2018 v.54 no.60 Remove constraint Source: 2018 v.54 no.60
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21. Mechanochemical dehydrocoupling of dimethylamine borane and hydrogenation reactions using Wilkinson's catalyst

Author:
Schumacher, Christian; Crawford, Deborah E.; Raguž, Branimir; Glaum, Robert; James, Stuart L.; Bolm, Carsten; Hernández, José G.
Source:
Chemical communications 2018 v.54 no.60 pp. 8355-8358
ISSN:
1364-548X
Subject:
catalysts; dehydrogenation; dimethylamine; hydrogen; hydrogenation; mechanochemistry; milling
Abstract:
... Mechanochemistry enabled the selective synthesis of the recherché orange polymorph of Wilkinson's catalyst [RhCl(PPh₃)₃]. The mechanochemically prepared Rh-complex catalysed the solvent-free dehydrogenation of Me₂NH·BH₃ in a ball mill. The in situ-generated hydrogen (H₂) could be utilised for Rh-catalysed hydrogenation reactions by ball milling. ...
DOI:
10.1039/c8cc04487b

22. Periodic and nonperiodic chiral self-assembled networks from 1,3,5-benzenetricarboxylic acid on Ag(111)

Author:
Lipton-Duffin, Joshua; Abyazisani, Maryam; MacLeod, Jennifer
Source:
Chemical communications 2018 v.54 no.60 pp. 8316-8319
ISSN:
1364-548X
Subject:
alloys; annealing; carboxylic acids; chemical interactions; deprotonation; silver
Abstract:
... Surface-catalyzed reactions provide a versatile route to synthesizing new 2D materials. Here, we show that the statistical nature of an activated reaction can lead to a diversity of intermolecular bonding motifs through partially-reacted molecules. With increasing annealing, we observe different periodic, well-defined phases of 1,3,5-benzenetricarboxylic acid on Ag(111), where the surface structur ...
DOI:
10.1039/c8cc04380a

23. Phenylene-bridged cross-conjugated 1,2,3-trisilacyclopentadienes

Author:
Zhao, Hui; Klemmer, Lukas; CowleyCurrent address: School of Chemistry, University of Edinburgh, Edinburgh, EH9 3JJ UK., Michael J.; MajumdarCurrent address: Department of Chemistry, Indian Institute of Science, Education and Research (IISER), Pune-411008, India., Moumita; Huch, Volker; Zimmer, Michael; Scheschkewitz, David
Source:
Chemical communications 2018 v.54 no.60 pp. 8399-8402
ISSN:
1364-548X
Subject:
chemical compounds; chemical reactions; nuclear magnetic resonance spectroscopy
Abstract:
... 1,2,3-Trisilacyclopentadienes are obtained from the reactions of cyclotrisilene c-Si₃R₄ (R = iPr₃C₆H₂) with phenyl and diphenyl acetylene, respectively. With 1,4-diethynyl benzene the cross-conjugated bridging of two of the Si₃C₂ cycles by a para-phenylene linker is achieved. UV/vis spectroscopy indicates a small but significant effect of cross-conjugation, which is confirmed by TD-DFT calculation ...
DOI:
10.1039/c8cc03297a

24. Photocatalytic H₂ production by dirhodium(ii,ii) photosensitizers with red light

Author:
Sayre, Hannah J.; Millet, Agustin; Dunbar, Kim R.; Turro, Claudia
Source:
Chemical communications 2018 v.54 no.60 pp. 8332-8334
ISSN:
1364-548X
Subject:
catalysts; chemical compounds; hydrogen; hydrogen production; irradiation; nanoparticles; photocatalysis; photosensitizing agents; red light
Abstract:
... Photocatalytic proton reduction to generate H₂ was achieved with the photosensitizers Rh₂(DTolF)₂(npCOO)₂ (DTolF = p-ditolylformamidinate; npCOO⁻ = 2-carboxylate-1,8-naphthyridine; 1) and [Rh₂(DTolF)₂(qnnp)₂][BF₄]₂ (qnnp = 2-(quinolin-2-yl)-1,8-naphthyridine; 2) using a relay system containing the sacrificial donor BNAH (1-benzyl-1,4-dihydronicotinamide), electron acceptor MV²⁺ (methylviologen), a ...
DOI:
10.1039/c8cc03631d

25. ProTide generated long-acting abacavir nanoformulations

Author:
Lin, Zhiyi; Gautam, Nagsen; Alnouti, Yazen; McMillan, JoEllyn; Bade, Aditya N.; Gendelman, Howard E.; Edagwa, Benson
Source:
Chemical communications 2018 v.54 no.60 pp. 8371-8374
ISSN:
1364-548X
Subject:
antiretroviral agents; antiviral properties; chemical compounds; chemical reactions; humans; macrophages; therapeutics
Abstract:
... Abacavir pronucleotide nanoformulations (NM3ABC) were prepared as a novel long acting slow effective release antiretroviral therapy. Single NM3ABC treatment of human monocyte-derived macrophages produced sustained intracellular carbovir-triphosphate and antiretroviral activities for up to 30 days. ...
DOI:
10.1039/c8cc04708a

26. Redox-responsive cisplatin nanogels for anticancer drug delivery

Author:
Zhang, Weiqi; Tung, Ching-Hsuan
Source:
Chemical communications 2018 v.54 no.60 pp. 8367-8370
ISSN:
1364-548X
Subject:
chemical reactions; cisplatin; cytotoxicity; doxorubicin; glutathione; hyaluronic acid; nanoparticles; neoplasms
Abstract:
... Inspired by cisplatin's deactivation by glutathione (GSH) in cancer, a GSH responsive nanogel loaded with doxorubicin (Dox) was prepared using hyaluronan as a matrix and cisplatin as a crosslinker. The elevated GSH depletes the cisplatin crosslinker in the nanogel, enhances Dox release and boosts cytotoxicity, thus providing a new GSH responsive platform to reverse cisplatin resistance. ...
DOI:
10.1039/c8cc01795f

27. Reversible 1,1-hydroaluminations and C–H activation in reactions of a cyclic (alkyl)(amino) carbene with alane

Author:
Cao, Levy L.; Stephan, Douglas W.
Source:
Chemical communications 2018 v.54 no.60 pp. 8407-8410
ISSN:
1364-548X
Subject:
aluminum; carbenes; carbon-hydrogen bond activation; diastereomers; hydrides; hydrogen; isomerization; nuclear magnetic resonance spectroscopy
Abstract:
... Varying the reaction ratio of cyclic (alkyl)(amino) carbene (cAACᴱᵗ) with AlH₃·NEtMe₂ leads to the isolation of (cAACᴱᵗH)AlH₂·NEtMe₂1 and (cAACᴱᵗH)₂Al(μ-H)₂AlH₂·NEtMe₂2 and the first example of a monomeric dialkyl-aluminum hydride (cAACᴱᵗH)₂AlH 3. VT and ¹H–¹H EXSY NMR experiments of 3 demonstrated the isomerization of the diastereomers of 3via the first instance of reversible hydride migration be ...
DOI:
10.1039/c8cc05013a

28. Surface heterogeneity in Li₀.₅CoO₂ within a porous composite electrode

Author:
Lu, Mi; Mao, Yongzhi; Wang, Jian; Hu, Yongfeng; Zhou, Jigang
Source:
Chemical communications 2018 v.54 no.60 pp. 8320-8323
ISSN:
1364-548X
Subject:
X-radiation; additives; carbon; cathodes; chemical compounds; electron microscopy; lithium batteries; thermal degradation; thermal stability
Abstract:
... Surface phase heterogeneity within a fully charged LiCoO₂ (LCO) composite electrode before and after thermal decomposition has been shown to strongly depend on the distribution of the binder and carbon additives, but be independent of the crystalline facet and size of LCO, as revealed by X-ray photoemission electron microscopy (X-PEEM). The obtained new insights deepen the understanding of thermal ...
DOI:
10.1039/c8cc03238f

29. TiO(OH)₂ can exceed the critical limit of conventional CO₂ sorbents: modification needed for high capacity and selectivity

Author:
Wu, Fan; Dellenback, Paul A.; Toan, Sam; Russell, Christopher K.; Fan, Maohong
Source:
Chemical communications 2018 v.54 no.60 pp. 8395-8398
ISSN:
1364-548X
Subject:
carbon; carbon dioxide; chemical reactions; nitrogen; sorbents; sorption; zeolites
Abstract:
... High-performance CO₂ sorbents typically contain both alkaline compounds and inert supporting materials. The convention is broken by TiO(OH)₂. The CO₂ sorption capacity of nanostructured TiO(OH)₂ reaches 6.1 mmol g⁻¹, while its CO₂ sorption selectivity for CO₂/N₂ mixtures is much higher than that of state-of-the-art sorbents, activated carbon and zeolite, which is another surprise. ...
DOI:
10.1039/c8cc03185a