Chemical Communications Blog

Top ten most accessed articles in June

19 Jul 2012

This month sees the following articles in ChemComm that are in the top ten most accessed:-

Selective total encapsulation of the sulfate anion by neutral nano-jars
Isurika R. Fernando, Stuart A. Surmann, Alexander A. Urech, Alexander M. Poulsen and Gellert Mezei
Chem. Commun., 2012,48, 6860-6862, DOI: 10.1039/C2CC32074F, Communication

A highly sensitive “switch-on” fluorescent probe for protein quantification and visualization based on aggregation-induced emission
Fangfang Wang, Jiying Wen, Lingyun Huang, Jinjiu Huang and Jin Ouyang
Chem. Commun., 2012,48, 7395-7397, DOI: 10.1039/C2CC33172A, Communication

Enhancing the Stokes’ shift of BODIPY dyes via through-bond energy transfer and its application for Fe³⁺-detection in live cell imaging
Xingyu Qu, Quan Liu, Xiaoning Ji, Huachao Chen, Zhikuan Zhou and Zhen Shen
Chem. Commun., 2012,48, 4600-4602, DOI: 10.1039/C2CC31011B, Communication

Water-soluble ionic benzoporphyrins
Lin Jiang, Ross A. Zaenglein, James T. Engle, Chris Mittal, C. Scott Hartley, Christopher J. Ziegler and Hong Wang
Chem. Commun., 2012,48, 6927-6929, DOI: 10.1039/C2CC31057K, Communication

Ruthenium-catalyzed regioselective oxidative coupling of aromatic and heteroaromatic esters with alkenes under an open atmosphere
Kishor Padala, Sandeep Pimparkar, Padmaja Madasamy and Masilamani Jeganmohan
Chem. Commun., 2012,48, 7140-7142, DOI: 10.1039/C2CC33339B, Communication

Non-asymmetric organocatalysis
Polyssena Renzi and Marco Bella
Chem. Commun., 2012,48, 6881-6896, DOI: 10.1039/C2CC31599H, Feature Article

Fluorescent detection of cholesterol using ß-cyclodextrin functionalized graphene
Avijit Mondal and Nikhil R. Jana
Chem. Commun., 2012,48, 7316-7318, DOI: 10.1039/C2CC33410K, Communication

Personal glucose sensor for point-of-care early cancer diagnosis
Jiao Su, Jin Xu, Ying Chen, Yun Xiang, Ruo Yuan and Yaqin Chai
Chem. Commun., 2012,48, 6909-6911, DOI: 10.1039/C2CC32729E, Communication

A 12-connected metal-organic framework constructed from an unprecedented cyclic dodecanuclear copper cluster
Huan Zhang, Ying Lu, Zhiming Zhang, Hai Fu, Yangguang Li, Dirk Volkmer, Dmytro Denysenko and Enbo Wang
Chem. Commun., 2012,48, 7295-7297, DOI: 10.1039/C2CC32120C, Communication

Water-dispersible and biodegradable polymer micelles with good antibacterial efficacy
Weizhong Yuan, Jingren Wei, Hang Lu, Lang Fan and Jianzhong Du
Chem. Commun., 2012,48, 6857-6859, DOI: 10.1039/C2CC31529G, Communication

Why not take a look at the articles today and blog your thoughts and comments below.

Fancy submitting an article to ChemComm? Then why not submit to us today or alternatively contact us with your suggestions.

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Silica sheets to deliver DNA into cells for disease prevention and treatment

17 Jul 2012

By Rachel Blakeburn.

Scientists in Japan have made a new DNA delivery substrate based on networks of bio-friendly upright silica sheets. The network of sheets forms a porous film on to which they can immobilise DNA, ready for delivery (transfection) into cells. The transfection efficiency of the silica film is approximately double that of solution-based transfection. Gene transfection is a potential method for preventing and treating diseases and analysing cell functions.

Link to journal article
Silica-based Gene Reverse Transfection: Upright Nanosheet Network for Promoted DNA Delivery to Cell
Q Ji et al
Chem. Commun., 2012, DOI: 10.1039/c2cc34289h

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Bendy non-volatile flash memory data storage device

11 Jul 2012

By Rachel Blakeburn.

Scientists in Taiwan have made a flexible memory device, which they say could open up a new design approach for high performance flexible non-volatile resistive memory devices. Non-volatile devices are computer memory devices that can retain stored information even when not powered, for example read-only memory, flash memory, hard drives and floppy disks.

The team’s device consists of a single-layer donor-acceptor conjugated polymer fabricated on plastic polyethylene naphthalene. It displayed a low threshold voltage (±2V), low switching power (~100µW cm^-2), large on/off memory window (10⁴), good retention (>10⁴s) and excellent endurance against electrical and mechanical stimuli, they say.

Link to journal article
Poly(fluorene-thiophene) Donor Tethered Phenanthro[9,10-d]imidazole Acceptor for Flexible Nonvolatile Flash Resistive Memory Devices
H-C Wu et al
Chem. Commun., 2012, DOI: 10.1039/c2cc34257j

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A new type of conducting polymer

05 Jul 2012

By Rachel Blakeburn.

Scientists in the US have reported a new type of conducting polymer, generated by a ROMP (ring opening metathesis polymerisation) reaction. The new polymers could have potentially useful properties, they say.

They reacted the complex (η⁵-C₅H₅)Ir(η⁴-C₆H₆) with Grubbs’ catalyst to give a polyacetylene consisting of cyclopentadienyliridium bound s-cis butadiene moieties separated by C=C linkages, a previously unavailable polyacetylene type.

Link to journal article
Ring Opening Metathesis Polymerization of an η⁴-Benzene Complex: A Direct Synthesis of a Polyacetylene with a Regular Pattern of Π Bound Metal Fragments
P D Zeits, T Fiedler and J A Gladysz
Chem. Commun., 2012, DOI: 10.1039/c2cc32150e

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Film to aid drug metabolism study

05 Jul 2012

By Rachel Blakeburn.

A way to study drug metabolism using cytochrome P450 enzymes (which are involved in the metabolism of over 60% of clinically used drugs) has been developed by scientists in China.

The team made a film of indium tin oxide nanoparticles (they have good conductivity) and cytochrome P450s encapsulated by chitosan (which are biocompatible) on a carbon electrode. They were able to bioelectronically initiate cytochrome P450 catalysis by replacing electron donation from expensive nicotinamide adenine dinucleotide phosphate with electrodes.

The system has potential for applications in drug discovery and development by monitoring substrate metabolism and enzyme inhibition. Other applications include biosensors for toxicity analysis and bioreactors for chemical synthesis.

Link to journal article
Electrochemically Driven Drug Metabolism via Cytochrome P450 2C9 Isozyme Microsomes with Cytochrome P450 Reductase and Indium Tin Oxide Nanoparticle Composites
X Xu et al
Chem. Commun., 2012, DOI: 10.1039/c2cc33575a

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Macrocycle insulation for molecular wires

05 Jul 2012

By Cally Haynes.

Researchers in Texas are using rotaxane formation to sterically protect or “insulate” molecular wires.

Molecular wires, in which an unsaturated linker separates two or more redox active metal sites, are of great research interest. These structures allow phenomena such as electron delocalisation or transport between the two redox sites. John Gladysz’s group at Texas A&M University have an ongoing interest in dimetallic polyynediyl complexes, in which two metal centres are linked by conjugated polyynediyl linkers that they now hope to “insulate” to reduce interactions between wires and the external environment. A previous approach used long alkyl bis-phosphine, which wrapped around the wire in a double helix to complex both metal centres. However, this gave two enantiomers, which interconverted rapidly in solution via uncoiling of the protective ligands.

The Gladysz group are now reporting a straightforward solution to this problem. They found that by synthesising their bis-platinum wire in the presence of a 33-membered macrocycle, they could incorporate the wire as the thread of a rotaxane complex. This provides a more robust protection for the wire which is unaffected by dynamic processes.

space filling representation of the rotaxane

This work shows a fantastic application of rotaxane chemistry for protection of a molecular wire. What’s more, the synthesis of this rotaxane is adaptable, and the Gladysz group are working on exciting new and improved systems including longer polyynediyl linkers and redox inactive macrocycles to improve the properties of the insulated wires.

The full communication can be downloaded here.

Cally Haynes

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Why some metal hip replacements fail

04 Jul 2012

By Rachel Blakeburn.

Hundreds of thousands of patients have been fitted with metal-on-metal hip joints

An investigation into why metal-on-metal hip joints fail long before other types of joints, such as metal-on-polyethylene and ceramic-on-ceramic, has revealed how the metal particles shed by the joints grinding against each other damage surrounding cells. The work, carried out by scientists in the UK, Canada, the Netherlands and the US, could lead to ways to predict which patients will have problems with these joints.

One theory why metal-on-metal hip implants fail points to the debris that is generated as the joints wear. It is thought that the debris is not compatible with human tissue, which causes the metal hip joints to fail, but it’s not known why.

Read the full article in Chemistry World

Link to journal article
Chemical Speciation of Nanoparticles Surrounding Metal-on-Metal Hips
A E Goode et al
Chem. Commun., 2012, DOI: 10.1039/c2cc33016d

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Kitchen nanodot chemistry

02 Jul 2012

By Rachel Blakeburn.

For carbon nanodots, simply heat soy milk for three hours. The milk undergoes carbonisation, surface functionalisation and doping

Water-soluble, nitrogen-doped fluorescent carbon nanodots (FCNs) have been made by simply heating soy milk. This cheap and green approach produces a carbon nanomaterial suitable for bioimaging applications, and has already shown promise as an electrocatalyst, say scientists in China.

There have already been several successful demonstrations using natural biomass as a precursor for producing nanomaterials. Inspired by these endeavours, Shaojun Dong and colleagues at the Chinese Academy of Sciences have developed a simpler, time-saving method for preparing bifunctional nanomaterials, in just three hours, using soy beans.

Read the full article in Chemistry World

Link to journal article
Bifunctional fluorescent carbon nanodots: green synthesis via soy milk and as metal-free electrocatalysts for oxygen reduction
C Zhu, J Zhai and S Dong
Chem. Commun., 2012, DOI: 10.1039/c2cc33844k

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Deadline Approaching – ICPOC 21 poster abstracts

29 Jun 2012

By Rachel Blakeburn.

There is still just time to submit your poster abstract to the 21st IUPAC International Conference on Physical Organic Chemistry (ICPOC 21) but don’t delay.

The deadline date of 13 July is for both poster abstracts and early bird registrations.

Why join ICPOC21?

Professor Hiromitsu Maeda, Ritsumeikan University, Japan has won the 2012 ChemComm Emerging Investigator Lectureship and will delivering his lecture at ICPOC 21.

This annual award recognises an emerging scientist in the early stages of their independent academic career. Professor Maeda’s has been particularly commended for his contributions to the fields of organic chemistry, supramolecular chemistry and materials science.

In addition to the outstanding plenary sessions, there will be three parallel sessions over the five days comprising invited lectures and contributed talks, as well as poster sessions.

A broad range of scientists from across the whole community who share a quantitative perspective on chemistry will be there, providing an opportunity to discuss and celebrate the current status, development, and the future of physical organic chemistry.

Make sure you are one of them! Don’t miss the poster abstract submission and early bird registration deadline – 13 July.

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ChemComm’s Impact Factor climbs up once more – 6.169!

28 Jun 2012

By Ross McLaren, Development Editor.

Another Impact Factor announcement and another increase for ChemComm

Thomson Reuters has just released the 2011 Journal Citation Reports ^® and it’s great news for ChemComm.

Our Impact Factor* (IF) has grown once again and now stands at 6.169.

The journal’s success would not be possible without the loyalty of our authors and the commitment of our referees – thank you to all of you who have helped contribute to this impressive figure. And, of course, we sincerely thank our Editorial and Advisory Boards for their continued dedication and commitment.

With an average time of just 55 days from receipt to publication, ChemComm has the fastest average publication times of any chemical journal and with our latest IF as well, it’s clear why ChemComm is the home of urgent, high impact communications from across the chemical sciences.

Join your colleagues today and submit your next high impact communication to ChemComm.

Find out how other RSC journals are ranked in the latest Impact Factor release >

*The IF provides an indication of the average number of citations per paper. Produced annually, IFs are calculated by dividing the number of citations in a year, by the number of citeable articles published in the preceding two years.

2011 Journal Citation Reports ^®, (Thomson Reuters, 2012).

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Chemical Communications Blog

Silica sheets to deliver DNA into cells for disease prevention and treatment

Bendy non-volatile flash memory data storage device

A new type of conducting polymer

Film to aid drug metabolism study

Macrocycle insulation for molecular wires

Why some metal hip replacements fail

Kitchen nanodot chemistry

Deadline Approaching – ICPOC 21 poster abstracts

ChemComm’s Impact Factor climbs up once more – 6.169!

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