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You searched for: Journal name Chemical communications Remove constraint Journal name: Chemical communications Publication year rev 7986-2014 Remove constraint Publication year rev: 7986-2014 Source 2014 v.50 no.17 Remove constraint Source: 2014 v.50 no.17
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1. A cyano-bridged single-chain magnet featuring alternate high- and low-spin manganese(iii) porphyrins

Author:
Xi Chen; Shu-Qi Wu; Ai-Li Cui; Hui-Zhong Kou
Source:
Chemical communications 2014 v.50 no.17 pp. 2120-2122
ISSN:
1364-548X
Subject:
chemical communication; chemical reactions; ferromagnetism; ions; magnetic materials; manganese; porphyrins
Abstract:
... The chains in complex [Mn(TPP)][Mn(TPP)(CN)₂] (H₂TPP = meso-tetra(4-phenyl)-porphyrin) demonstrate perfect linearity, and are well isolated with the nearest interchain Mn–Mn separation of 12.95 Å. Ferromagnetic coupling is present among adjacent Mn(iii) ions, and single-chain magnet (SCM) behaviour is verified. ...
DOI:
10.1039/c3cc48117d

2. Acceptor–acceptor type isoindigo-based copolymers for high-performance n-channel field-effect transistors

Author:
Gyoungsik KimThese two authors contributed equally to this work.; A-Reum Han; Hae Rang Lee; Junghoon Lee; Joon Hak Oh; Changduk Yang
Source:
Chemical communications 2014 v.50 no.17 pp. 2180-2183
ISSN:
1364-548X
Subject:
chemical reactions; composite polymers; lactams; transistors
Abstract:
... Two acceptor–acceptor (A–A) type copolymers (PIIG-BT and PIIG-TPD) with backbones composed exclusively of electron-deficient units are designed and synthesized. Both copolymers show unipolar n-type operations. In particular, PIIG-BT shows electron mobility of up to 0.22 cm² V⁻¹ s⁻¹. This is a record value for n-type copolymers based on lactam cores. ...
DOI:
10.1039/c3cc48013e

3. Catalytic asymmetric [3+2] cycloaddition of aromatic aldehydes with oxiranes by C–C bond cleavage of epoxides: highly efficient synthesis of chiral 1,3-dioxolanes

Author:
Weiliang Chen; Lili Lin; Yunfei Cai; Yong Xia; Weidi Cao; Xiaohua Liu; Xiaoming Feng
Source:
Chemical communications 2014 v.50 no.17 pp. 2161-2163
ISSN:
1364-548X
Subject:
aldehydes; aromatic compounds; catalytic activity; chemical bonding; chemical communication; cleavage (chemistry); cycloaddition reactions; diastereoselectivity; enantioselectivity; epoxides; epoxy compounds; models
Abstract:
... A novel and efficient N,N′-dioxide–Gd(iii) complex was developed for the highly diastereo- and enantioselective [3+2] cycloaddition of aryl oxiranyl diketones and aldehydes via C–C bond cleavage of oxiranes. The corresponding chiral 1,3-dioxolanes were obtained in excellent yields (up to 99%) with high diastereoselectivities (>95 : 5 dr) and enantioselectivities (up to 91% ee). Moreover, a possibl ...
DOI:
10.1039/c3cc48606k

4. Coordination ligand exchange of a xanthene probe–Ce(iii) complex for selective fluorescence sensing of inorganic pyrophosphate

Author:
Ekkachai Kittiloespaisan; Ippei Takashima; Wansika Kiatpathomchai; Jirarut Wongkongkatep; Akio Ojida
Source:
Chemical communications 2014 v.50 no.17 pp. 2126-2128
ISSN:
1364-548X
Subject:
DNA; catalytic activity; chemical communication; chemical reactions; fluorescence; ligands; loop-mediated isothermal amplification; xanthenes
Abstract:
... A fluorescence sensing system for inorganic pyrophosphate based on ligand exchange of the Ce(iii) complex of a xanthene-type probe is developed. This sensing system is successfully applied to the fluorescence detection of polymerase-catalyzed DNA amplification using loop-mediated isothermal amplification. ...
DOI:
10.1039/c3cc48101h

5. Dinuclear ruthenium(ii) polypyridyl complexes as single and two-photon luminescence cellular imaging probes

Author:
Wenchao Xu; Jiarui Zuo; Lili Wang; Liangnian Ji; Hui Chao
Source:
Chemical communications 2014 v.50 no.17 pp. 2123-2125
ISSN:
1364-548X
Subject:
chemical communication; chemical reactions; image analysis; luminescence; pH; photostability; ruthenium; water solubility
Abstract:
... A new series of dinuclear ruthenium(ii) polypyridyl complexes, which possess larger π-conjugated systems, good water solubility and pH resistance, and high photostability, were developed to act as single and two-photon luminescence cellular imaging probes. ...
DOI:
10.1039/c3cc48916g

6. Direct visualization of initial SEI morphology and growth kinetics during lithium deposition by in situ electrochemical transmission electron microscopy

Author:
Robert L. Sacci; Nancy J. Dudney; Karren L. More; Lucas R. Parent; Ilke Arslan; Nigel D. Browning; Raymond R. Unocic
Source:
Chemical communications 2014 v.50 no.17 pp. 2104-2107
ISSN:
1364-548X
Subject:
batteries; chemical reactions; electrochemistry; electrolytes; gold; growth models; lithium; transmission electron microscopy
Abstract:
... Deposition of Li is a major safety concern existing in Li-ion secondary batteries. Here we perform the first in situ high spatial resolution measurement coupled with real-time quantitative electrochemistry to characterize SEI formation on gold using a standard battery electrolyte. We demonstrate that a dendritic SEI forms prior to Li deposition and that it remains on the surface after Li electrodi ...
DOI:
10.1039/c3cc49029g

7. Efficient synthesis of chiral cyclic acetals by metal and Brønsted acid co-catalyzed enantioselective four-component cascade reactions

Author:
Lin Qiu; Xin Guo; Chaoqun Ma; Huang Qiu; Shunying Liu; Liping Yang; Wenhao Hu
Source:
Chemical communications 2014 v.50 no.17 pp. 2196-2198
ISSN:
1364-548X
Subject:
Bronsted acids; catalytic activity; chemical reactions; diastereoselectivity; enantioselectivity
Abstract:
... Four-component Mannich reactions subsequently followed by an intramolecular oxo-Michael addition were developed to efficiently produce chiral cyclic acetals with high diastereoselectivity and enantioselectivity. ...
DOI:
10.1039/c3cc49063g

8. Gold(i)-catalysed [1,3] O→C rearrangement of allenyl ethers

Author:
Chandrababu Naidu Kona; Chepuri V. Ramana
Source:
Chemical communications 2014 v.50 no.17 pp. 2152-2154
ISSN:
1364-548X
Subject:
aldehydes; catalysts; catalytic activity; chemical reactions; ethers; gold
Abstract:
... A simple and rapid access to the α-substituted acryl aldehydes has been provided by developing a gold-catalysed [1,3] rearrangement of the allenyl ethers importantly with a record turnover frequency of 4600 h⁻¹ (at 0.05 mol% of the catalyst concentration) in homogeneous gold(i) catalysis. ...
DOI:
10.1039/c3cc49629e

9. H-bond and π–π stacking directed self-assembly of two-component supramolecular nanotubes: tuning length, diameter and wall thickness

Author:
Zhaocun Shen; Tianyu Wang; Minghua Liu
Source:
Chemical communications 2014 v.50 no.17 pp. 2096-2099
ISSN:
1364-548X
Subject:
chemical communication; chemical reactions; glutamic acid; melamine; nanotubes
Abstract:
... A series of supramolecular nanotubes with fine-tuned length, diameter and wall thickness were obtained from co-assembly of an l-glutamic acid based bolaamphiphile (HDGA) and melamine with different molar ratios. The changes in tubular nanostructures were found to be dependent on different self-assembly mechanisms. ...
DOI:
10.1039/c3cc48350a

10. Palladium-catalyzed P(O)R₂ directed C–H arylation to synthesize electron-rich polyaromatic monophosphorus ligands

Author:
Rong-Bin Hu; Heng Zhang; Xiao-Yu Zhang; Shang-Dong Yang
Source:
Chemical communications 2014 v.50 no.17 pp. 2193-2195
ISSN:
1364-548X
Subject:
arylation; biphenyl; carbon-hydrogen bond activation; catalytic activity; ligands; moieties; palladium; regioselectivity
Abstract:
... Palladium-catalyzed arylation of (diisopropylphosphoryl)biphenyl skeleton derivatives by the P(O)R₂ directed C–H functionalization was reported. The related products were obtained in high regioselectivity and good functional group tolerance was observed. This reaction provided a new and efficient pathway for the synthesis of polyaromatic monophosphorus ligands. ...
DOI:
10.1039/c3cc49050e

11. Periodical assembly of repetitive RNA sequences synthesized by rolling circle transcription with short DNA staple strands to RNA–DNA hybrid nanowires

Author:
Hong-Ning Zheng; Yin-Zhou Ma; Shou-Jun Xiao
Source:
Chemical communications 2014 v.50 no.17 pp. 2100-2103
ISSN:
1364-548X
Subject:
DNA; RNA; chemical communication; chemical compounds; chemical reactions; nanowires; nucleotide sequences; transcription (genetics)
Abstract:
... The long single-stranded RNAs produced from Rolling Circle Transcription (RCT) were used as scaffolds to be folded with a few short DNA staples into RNA–DNA hybrid nanowires. ...
DOI:
10.1039/c3cc48808j

12. Regioselective synthesis of 2,3-dihydrobenzodioxepinones from epoxides and 2-bromophenols via palladium-catalyzed carbonylation

Author:
Haoquan Li; Anke Spannenberg; Helfried Neumann; Matthias Beller; Xiao-Feng Wu
Source:
Chemical communications 2014 v.50 no.17 pp. 2114-2116
ISSN:
1364-548X
Subject:
Lewis bases; catalytic activity; chemical communication; chemical reactions; epoxides; palladium; regioselectivity
Abstract:
... A highly regioselective cascade synthesis of 2,3-dihydrobenzodioxepinone from 2-bromophenols and epoxides has been developed. The reactions go through nucleophilic ring-opening of epoxides and subsequent palladium-catalyzed intramolecular alkoxylcarbonylation. ...
DOI:
10.1039/c3cc48490d

13. The role of transition metals in the catalytic activity of Pt alloys: quantification of strain and ligand effects

Author:
Minhua ShaoCurrent address: Ford Motor Company, Dearborn, MI 48124, USA; Jonathan H. Odell; Amra Peles; Dong Su
Source:
Chemical communications 2014 v.50 no.17 pp. 2173-2176
ISSN:
1364-548X
Subject:
alloy nanoparticles; alloys; catalytic activity; chemical reactions; electrochemistry; ligands; nickel; platinum
Abstract:
... The oxygen reduction reaction (ORR) activity as a function of thickness of the Pt shell on Pt–Ni alloy nanoparticles was established. We demonstrated that the effects of transition metals could only extend to a very thin Pt shell, which was 0.9–1.0 nm for Pt₃Ni. ...
DOI:
10.1039/c3cc47341d

14. Unique reactivity in Pt/CNT catalyzed hydrolytic dehydrogenation of ammonia borane

Author:
Wenyao Chen; Jian Ji; Xuezhi Duan; Gang Qian; Ping Li; Xinggui Zhou; De Chen; Weikang Yuan
Source:
Chemical communications 2014 v.50 no.17 pp. 2142-2144
ISSN:
1364-548X
Subject:
ammonia; catalysts; catalytic activity; dehydrogenation; hydrogen production; nanomaterials; oxidation; oxygen; particle size; texture
Abstract:
... We demonstrate an unprecedented H₂ generation activity in the hydrolytic dehydrogenation of ammonia borane over acid oxidation- and subsequent high temperature-treated CNT immobilized Pt nanocatalysts to combine the merits of defect-rich and oxygen group-deficient surfaces and unique textural properties of supports as well as optimum particle size of Pt. ...
DOI:
10.1039/c3cc48027e

15. ZnCl₂-catalyzed chemoselective cascade reactions of enaminones with 2-furylcarbinols: a versatile process for the synthesis of cyclopenta[b]pyrrole derivatives

Author:
Chengyu Wang; Chunyi Dong; Lingkai Kong; Yanli Li; Yanzhong Li
Source:
Chemical communications 2014 v.50 no.17 pp. 2164-2166
ISSN:
1364-548X
Subject:
catalytic activity; chemical reactions; chemoselectivity; pyrroles
Abstract:
... A highly efficient ZnCl₂-catalyzed cascade reaction of enaminones with 2-furylcarbinols under mild reaction conditions has been developed. This methodology offers a chemo- and diastereo-selective access to functionalized cyclopenta[b]pyrrole derivatives in good to excellent yields. ...
DOI:
10.1039/c3cc49191a

16. pH dependence of the electroreduction of nitrate on Rh and Pt polycrystalline electrodes

Author:
Jian Yang; Paula Sebastian; Matteo Duca; Thijs Hoogenboom; Marc T. M. Koper
Source:
Chemical communications 2014 v.50 no.17 pp. 2148-2151
ISSN:
1364-548X
Subject:
catalysts; catalytic activity; electrochemistry; electrodes; nitrate reduction; nitrates; nitric acid; pH; platinum; protons; rhodium
Abstract:
... From a study of the electrocatalytic reduction of nitrate on Pt and Rh electrodes over a wide pH range, HNO₃ is suggested as the only reducible species in nitrate reduction on Pt, whereas both HNO₃ and the nitrate anion are reducible on Rh. Rh is the more active catalyst of the two because it can activate nitrate even if no protons are available in solution. This is an important insight into the d ...
DOI:
10.1039/c3cc49224a

17. A [2+2+2] cyclization strategy for the synthesis of phosphorus embedding [6]helicene-like structures

Author:
Paul Aillard; Pascal Retailleau; Arnaud Voituriez; Angela Marinetti
Source:
Chemical communications 2014 v.50 no.17 pp. 2199-2201
ISSN:
1364-548X
Subject:
X-ray diffraction; chemical communication; chemical reactions; enantiomers; helicenes; nickel; phosphorus
Abstract:
... A Ni(0) promoted intramolecular [2+2+2] cyclotrimerization of triynes provides suitable access to a new series of phosphorus embedding helicenes. [6]Oxahelicenes in which the helical sequence terminates with a phosphole oxide unit have been prepared in both racemic and enantiopure forms and characterized by X-ray diffraction studies. ...
DOI:
10.1039/c3cc48943d

18. A mononuclear cobalt complex with an organic ligand acting as a precatalyst for efficient visible light-driven water oxidation

Author:
Shao Fu; Yongdong Liu; Yong Ding; Xiaoqiang Du; Fangyuan Song; Rui Xiang; Baochun Ma
Source:
Chemical communications 2014 v.50 no.17 pp. 2167-2169
ISSN:
1364-548X
Subject:
catalysts; cobalt; ligands; oxidation; pH; perchlorates; photosensitizing agents
Abstract:
... N,N′-Bis(salicylidene)ethylenediaminecobalt(ii) (1) has been investigated as a highly efficient water oxidation precatalyst with a TON of 854 at pH = 9.0, using [Ru(bpy)₃](ClO₄)₂ as a photosensitizer and Na₂S₂O₈ as a sacrificial electron acceptor. ...
DOI:
10.1039/c3cc48059c

19. A one-pot septanoside formation and glycosylation of acyclic dithioacetals derived from 1,2-cyclopropanated sugars

Author:
Patteti Venukumar; Chalapala Sudharani; Perali Ramu Sridhar
Source:
Chemical communications 2014 v.50 no.17 pp. 2218-2221
ISSN:
1364-548X
Subject:
glycosylation; stereoselectivity; sugars; thiols
Abstract:
... Ring opening of 3-oxo-1,2-cyclopropanated sugars with thiols leads to the serendipitous discovery of the synthesis of sugar based homologated acyclic dithioacetals. These acyclic dithioacetals were found to undergo one-pot septanoside formation followed by stereoselective glycosylation in the presence of glycosyl acceptors under glycosylation reaction conditions. ...
DOI:
10.1039/c3cc49116a

20. A series of logic gates based on electrochemical reduction of Pb²⁺ in self-assembled G-quadruplex on the gold electrode

Author:
Wei Zhai; Chunyan Du; Xiaohong Li
Source:
Chemical communications 2014 v.50 no.17 pp. 2093-2095
ISSN:
1364-548X
Subject:
DNA; chemical reactions; electrochemistry; electrodes; gold; lead
Abstract:
... Direct reduction of Pb²⁺ in self-assembled G-quadruplex on the gold electrode was first observed, which was applied in constructing a series of simple and reversible logic gates, such as one-input, two-input and three-input logic gates. Importantly, the largest scale of reversibility among two-input logic gates was achieved based on the reciprocal transformations of DNA. ...
DOI:
10.1039/c3cc47763k