Secrets shown in a good light

Written by Philippa Matthews for Chemistry World

Scientists in France have created paper that can carry secret messages. In visible light, the paper is indistinguishable from regular paper and users can read, write or erase messages using three different wavelengths of UV light.

The functionalised paper, made by François-Xavier Felpin from the University of Nantes, and colleagues, contains coumarin molecules attached to the paper’s cellulose fibres. Exposing the paper to UV light with a wavelength of 340nm causes coumarin to react and create cyclobutane dimers. These dimers are invisible under visible light, but fluoresce under a UV lamp.

Graphical Abstract

Read the full article in Chemistry World >>>

M. d’Halluin, J. Rull-Barrull, E. Le Grognec, D. Jacquemin and F.-X. Felpin
Chem. Commun., 2016, 52, 7672-7675
DOI: 10.1039/C6CC02915A
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Ivan Aprahamian wins Cram Lehn Pedersen Prize

We’re delighted to share some supramolecular chemistry news including a prize announcement, events and themed collections

Photograph of Professor Ivan AprahamianThe International Committee of the International Symposium on Macrocyclic and Supramolecular Chemistry is delighted to announce that the 2016 Cram Lehn Pedersen Prize, given annually to an outstanding early-career supramolecular chemist, has been awarded to Professor Ivan Aprahamian, Dartmouth College, USA for his exciting research on molecular switches – congratulations!

As part of the Prize, Prof. Aprahamian will give a lecture at the 11th International Symposium on Macrocyclic and Supramolecular Chemistry meeting in Seoul, Korea which takes place from 10–14 July 2016.

Photograph of Dr Jeanne AndresDr Jeanne Andres (Deputy Editor of ChemComm) will be attending the event and will present the award in person. She would love to hear about your research and meet with our readers, authors and referees. Please do get in touch with Jeanne if you would like to arrange a meeting in advance.

We are also delighted to announce that the International Symposium on Macrocyclic and Supramolecular Chemistry in 2017 will be held in conjuction with ISACS: Challenges in Organic Materials & Supramolecular Chemistry.

Our keynote speakers will be:

  • François Diederich (ETH Zurich, Switzerland)
  • David Leigh (The University of Manchester, UK)
  • Jeffrey Long (University of California, Berkeley, USA)
  • Vivian Yam (University of Hong Kong, Hong Kong)
  • Xi Zhang (Tsinghua University, China)

Full details of all the confirmed speakers may be found on the event website.

We hope you can join us in Cambridge, UK – save the dates 2–6 July 2017!

While you are waiting you might like to check out some of our recent themed collections of articles in the area of supramolecular chemistry – Enjoy!

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Top 25 most-downloaded ChemComm articles January–March 2016

Here are the 25 most-downloaded ChemComm articles from the first quarter of 2016:

The surface chemistry of metal–organic frameworks
Christina V. McGuire and Ross S. Forgan
Chem. Commun., 2015, 51, 5199-5217, DOI: 10.1039/C4CC04458D, Feature Article
From themed collection 2015 Emerging Investigators

Radical C–H functionalization to construct heterocyclic compounds
Jin-Tao Yu and Changduo Pan
Chem. Commun., 2016, 52, 2220-2236, DOI: 10.1039/C5CC08872K, Feature Article

Fluorescent probes for the selective detection of chemical species inside mitochondria
Zheng Xu and Lin Xu
Chem. Commun., 2016, 52, 1094-1119, DOI: 10.1039/C5CC09248E, Feature Article

Rapid synthesis of zeolitic imidazolate framework-8 (ZIF-8) nanocrystals in an aqueous system
Yichang Pan, Yunyang Liu, Gaofeng Zeng, Lan Zhao and Zhiping Lai
Chem. Commun., 2011, 47, 2071-2073, DOI: 10.1039/C0CC05002D, Communication

Nanostructured electrochromic smart windows: traditional materials and NIR-selective plasmonic nanocrystals
Evan L. Runnerstrom, Anna Llordés, Sebastien D. Lounis and Delia J. Milliron
Chem. Commun., 2014, 50, 10555-10572, DOI: 10.1039/C4CC03109A, Feature Article

Reduction of graphene oxide via L-ascorbic acid
Jiali Zhang, Haijun Yang, Guangxia Shen, Ping Cheng, Jingyan Zhang and Shouwu Guo
Chem. Commun., 2010, 46, 1112-1114, DOI: 10.1039/B917705A, Communication

Graphene quantum dots: emergent nanolights for bioimaging, sensors, catalysis and photovoltaic devices
Jianhua Shen, Yihua Zhu, Xiaoling Yang and Chunzhong Li
Chem. Commun., 2012, 48, 3686-3699, DOI: 10.1039/C2CC00110A, Feature Article

Aggregation-induced emission: phenomenon, mechanism and applications
Yuning Hong, Jacky W. Y. Lam and Ben Zhong Tang
Chem. Commun., 2009, 4332-4353, DOI: 10.1039/B904665H, Feature Article

A facile synthesis of UiO-66, UiO-67 and their derivatives
Michael J. Katz, Zachary J. Brown, Yamil J. Colón, Paul W. Siu, Karl A. Scheidt, Randall Q. Snurr, Joseph T. Hupp and Omar K. Farha
Chem. Commun., 2013, 49, 9449-9451, DOI: 10.1039/C3CC46105J, Communication

Production of few-layer phosphorene by liquid exfoliation of black phosphorus
Jack R. Brent, Nicky Savjani, Edward A. Lewis, Sarah J. Haigh, David J. Lewis and Paul O’Brien
Chem. Commun., 2014, 50, 13338-13341, DOI: 10.1039/C4CC05752J, Communication
From themed collection Celebrating the 2016 RSC Prize and Award Winners

All-inorganic cesium lead halide perovskite nanocrystals for photodetector applications
Parthiban Ramasamy, Da-Hye Lim, Bumjin Kim, Seung-Ho Lee, Min-Sang Lee and Jong-Soo Lee
Chem. Commun., 2016, 52, 2067-2070, DOI: 10.1039/C5CC08643D, Communication

Photocatalytic and photoelectrocatalytic reduction of CO2 using heterogeneous catalysts with controlled nanostructures
Shunji Xie, Qinghong Zhang, Guodong Liu and Ye Wang
Chem. Commun., 2016, 52, 35-59, DOI: 10.1039/C5CC07613G, Feature Article

Preparation and applications of novel composites composed of metal–organic frameworks and two-dimensional materials
Shaozhou Li, Kai Yang, Chaoliang Tan, Xiao Huang, Wei Huang and Hua Zhang
Chem. Commun., 2016, 52, 1555-1562, DOI: 10.1039/C5CC09127F, Feature Article

Aerobic oxidation catalysis with stable radicals
Qun Cao, Laura M. Dornan, Luke Rogan, N. Louise Hughes and Mark J. Muldoon
Chem. Commun., 2014, 50, 4524-4543, DOI: 10.1039/C3CC47081D, Feature Article

Key processes in ruthenium-catalysed olefin metathesis
David J. Nelson, Simone Manzini, César A. Urbina-Blanco and Steven P. Nolan
Chem. Commun., 2014, 50, 10355-10375, DOI: 10.1039/C4CC02515F, Feature Article

Insight into the crystallization of amorphous imine-linked polymer networks to 2D covalent organic frameworks
Brian J. Smith, Anna C. Overholts, Nicky Hwang and William R. Dichtel
Chem. Commun., 2016, 52, 3690-3693, DOI: 10.1039/C5CC10221A, Communication

Creating a thermally activated delayed fluorescence channel in a single polymer system to enhance exciton utilization efficiency for bluish-green electroluminescence
Jiajia Luo, Guohua Xie, Shaolong Gong, Tianheng Chen and Chuluo Yang
Chem. Commun., 2016, 52, 2292-2295, DOI: 10.1039/C5CC09797E, Communication

Highly crystalline covalent organic frameworks from flexible building blocks
Liqian Xu, San-Yuan Ding, Junmin Liu, Junliang Sun, Wei Wang and Qi-Yu Zheng
Chem. Commun., 2016, 52, 4706-4709, DOI: 10.1039/C6CC01171C, Communication

Strongly green-photoluminescent graphene quantum dots for bioimaging applications
Shoujun Zhu, Junhu Zhang, Chunyan Qiao, Shijia Tang, Yunfeng Li, Wenjing Yuan, Bo Li, Lu Tian, Fang Liu, Rui Hu, Hainan Gao, Haotong Wei, Hao Zhang, Hongchen Sun and Bai Yang
Chem. Commun., 2011, 47, 6858-6860, DOI: 10.1039/C1CC11122A, Communication

Synthesis and catalytic properties of MIL-100(Fe), an iron(III) carboxylate with large pores
Patricia Horcajada, Suzy Surblé, Christian Serre, Do-Young Hong, You-Kyong Seo, Jong-San Chang, Jean-Marc Grenèche, Irene Margiolaki and Gérard Férey
Chem. Commun., 2007, 2820-2822, DOI: 10.1039/B704325B, Communication

Pharmaceutical cocrystals: along the path to improved medicines
Naga K. Duggirala, Miranda L. Perry, Örn Almarsson and Michael J. Zaworotko
Chem. Commun., 2016, 52, 640-655, DOI: 10.1039/C5CC08216A, Feature Article

Photo-click construction of a targetable and activatable two-photon probe imaging protease in apoptosis
Mi Zhou, Jing Hu, Mengmeng Zheng, Qinhua Song, Jinbo Li and Yan Zhang
Chem. Commun., 2016, 52, 2342-2345, DOI: 10.1039/C5CC09973K, Communication

Cobalt(III) catalyzed C-8 selective C–H and C–O coupling of quinoline N-oxide with internal alkynes via C–H activation and oxygen atom transfer
Nagaraju Barsu, Malay Sen, J. Richard Premkumar and Basker Sundararaju
Chem. Commun., 2016, 52, 1338-1341, DOI: 10.1039/C5CC08736H, Communication

Novel solvent properties of choline chloride/urea mixtures
Andrew P. Abbott, Glen Capper, David L. Davies, Raymond K. Rasheed and Vasuki Tambyrajah
Chem. Commun., 2003, 70-71, DOI: 10.1039/B210714G, Communication

Chemical synthesis of magnetic nanoparticles
Taeghwan Hyeon
Chem. Commun., 2003, 927-934, DOI: 10.1039/B207789B, Feature Article


ChemComm is the home of urgent high quality communications from across the chemical sciences. With a world renowned reputation for quality and fast times to publication (average of 40 days), ChemComm is the ideal place to publish your research.    

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Sunset for perovskites?

Hugh Cowley writes about a hot Chemical Science article for Chemistry World

Perovskites have arguably transformed solar energy more in the last few years than other technologies have in decades. But British researchers have called into question optimistic predictions of undiscovered perovskites.

© Shutterstock

Hybrid perovskites are a mix of organic and inorganic ions with the same crystal structure as calcium titanium oxide (CaTiO3). Halide perovskites are a subset of these structures containing halide ions such as fluoride or chloride. Iodide perovskites such as methylammonium lead iodide (CH3NH3PbI3) can convert sunlight to electricity.

Researchers use a decades-old geometric ‘tolerance factor’ to propose new combinations of ions that will form stable perovskites. Now, Robert Palgrave and his team at University College London, UK, have reassessed the validity of the tolerance factor in predicting new hybrid perovskite structures. Read the full article in Chemistry World»


Read the original journal article in Chemical Science – it’s open access:
On the application of the tolerance factor to inorganic and hybrid halide perovskites: a revised system
W. Travis, E. N. K. Glover, H. Bronstein, D. O. Scanlon and R. G. Palgrave
Chem. Sci., 2016, Advance Article, DOI: 10.1039/C5SC04845A, Edge Article

 
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Iron-rich silicate plays cosmic matchmaker

Nelly Berg writes about a hot ChemComm article for Chemistry World

Computational chemists in Spain have discovered that iron in cosmic dust grains helps turn hydrogen atoms into molecular hydrogen (H2).

The average density of the interstellar medium is several billion times less dense than even the best vacuum chambers on Earth. Collisions between hydrogen atoms are therefore rare, and when they do occur, only one out of every 100,000 creates H2. Read the full article in Chemistry World»


Read the original journal article in ChemComm – it’s open access:
Does Fe2+ in olivine-based interstellar grains play any role in the formation of H2? Atomistic insights from DFT periodic simulations
J. Navarro-Ruiz, P. Ugliengo, M. Sodupe and A. Rimola
Chem. Commun., 2016, Advance Article, DOI: 10.1039/C6CC02313D, Communication

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Caging chemical weapons

Elisabeth Ratcliffe writes about a hot ChemComm article for Chemistry World

Scientists in the UK have developed supramolecular cages that can trap chemical weapon simulants using the hydrophobic effect.

Organophosphorous chemical weapons, such as sarin and soman, interfere with signals between nerve cells, and have recently been used to deadly effect in places such as Syria. Researchers are therefore trying to develop techniques that detect these chemical weapons in the environment, and destroy them. Read the full article in Chemistry World»


Read the original journal article in ChemComm - it’s open access:
Binding of chemical warfare agent simulants as guests in a coordination cage: contributions to binding and a fluorescence-based response
Christopher G. P. Taylor, Jerico R. Piper and Michael D. Ward
DOI: 10.1039/C6CC02021F, Communication

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Macrocyle aromaticity switch is all about that base

Heather Powell writes about a hot ChemComm article for Chemistry World

Researchers have discovered a macrocyle that they can render aromatic, non-aromatic or anti-aromatic by altering the amount of base they add.

 

Meso-aryl expanded porphyrins are usually exceedingly twisted structures due to strong hydrogen bonds within them. Even though they contain many conjugated bonds, this twisted structure means that most of these porphyrins are non-aromatic (to be aromatic, a molecule not only needs conjugation, but must also be flat). Previously scientists had added hydrogen ions to disturb hydrogen bonding in porphyrins, causing them to untwist and become aromatic. Here, a team led by Dongho Kim from Yonsei University, Korea, have flattened a porphyrin by removing hydrogen ions. Read the full article in Chemistry World»


Read the original research in ChemComm – it’s free to read until 20 May 2016:
Multifaceted [36]octaphyrin(1.1.1.1.1.1.1.1): deprotonation-induced switching among nonaromatic, Möbius aromatic, and Hückel antiaromatic species
Won-Young Cha, Takanori Soya, Takayuki Tanaka, Hirotaka Mori, Yongseok Hong, Sangsu Lee, Kyu Hyung Park, Atsuhiro Osuka and Dongho Kim
DOI: 10.1039/C6CC02051H, Communication

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‘Lightning talk’ prize winner at the University of California Symposium for Chemical Sciences

Congratulations to our ChemComm ‘lightning talk’ prize winner at the University of California Symposium for the Chemical Sciences.
Liban Saleh from the Spokoyny group

The meeting was supported by eight UC departments (UC Davis, UCLA, UC San Diego, UC Berkeley, UC Riverside, UC Santa Cruz, UC Irvine, UC Santa Barbara) representing all areas of chemistry including biological, organic, inorganic, analytical and physical chemistry. The symposium which was held for the first time provided an excellent opportunity for graduate students and postdocs to not only present their work in a multidisciplinary environment, but also take part in different workshops to further their career and establish connections with professionals from industry, government and alternative science jobs.

We would like to congratulate the winner of the best ‘lightning talk’, a short representation of the speaker’s research of about 5 min.  The prize was given to Liban Saleh who is currenlty working as a Post-Doctoral Associate in the group of Alexander Spokoyny (UCLA). His research focuses on inorganic and organomimetic cluster chemistry towards functional materials.

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Fluorescently finding a specific disease marker needle in a biological haystack

In a recent ChemComm Feature Article, researchers from the University of Bath review and highlight advances in the combination of carbohydrates and boronic acids to detect fluorescently disease markers. Anthea Blackburn explains further…

The early detection and monitoring of disease is a somewhat recent advancement in healthcare that offers the significant advantage of being able to treat an illness in its initial stages, rather than once it has already manifested itself in the patient. Such a feat requires, however, the ability to see very specific and characteristic disease markers in situ, not unlike the search for a needle in a haystack.
 
Luckily, with the advent of fluorescence (and other) imaging techniques, methods have been developed whereby, in combination with contrast agents that are able to interact with specific molecules in the body, cell chemistry and function can be observed with high sensitivity, and, more importantly, abnormalities in these processes noticed in real time.
 
The art and ultimate success of this fluorescence imaging comes from the design of the contrast agent employed – the probe should be able to selectively recognise and target the relevant disease marker reversibly and under biological conditions. A number of approaches currently exist that meet these requirements, one of which is the boronic acid recognition motif that is able to act as a molecular receptor for the 1,2- and 1,3-diols commonly expressed in carbohydrates and complex glycoproteins. Tony James and his team from the University of Bath, whose own research focuses on such use of boronic acid receptors in the detection of carbohydrates, have summarised the recent and exciting advances in this particular field of selective biological imaging.
 
The well-known and strong affinity of boronic acids for carbohydrates offers a convenient means of detecting commonly expressed markers in diseases including some cancers, as well as Alzheimer’s, autoimmune, and heart diseases. As such, the attachment of this relatively simple chemical moiety to fluorescent small molecular, polymeric or benzoxaborale-based probes offers a diagnostic tool that is able to detect, monitor, and aid in the personalised treatment of such significant and life-changing diseases.
 
This Feature Article convincingly highlights the impact that boronic acid-based fluorescence imaging will ultimately have on a range of important clinical and theranostic practices and their successes.
  
Read this hot ChemComm article in full:
X. Sun, W. Zhai, J. S. Fossey and T. D. James
Chem. Commun., 2016, 52, 3456–3469
DOI: 10.1039/C5CC08633G

About the Writer:
Anthea Blackburn is a guest Web Writer for Chemical Communications. Anthea hails from New Zealand, carried out her graduate studies in mechanostereochemistry under the guidance of Prof. Fraser Stoddart in the US, and has recently relocated to live in London. She is a recent addition to the Econic Technologies team, where she is working on the development of new catalysts for the environmentally beneficial preparation of polycarbonates from CO2.
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Hot ChemComm articles for March

Take a look at this selection of recently published referee-recommended articles – all are free to read* until 17 April.

Printed microelectrodes for scalable, high-areal-capacity lithium–sulfur batteries
Craig Milroy and Arumugam Manthiram
DOI: 10.1039/C5CC10503J, Communication

C5CC10503J GA


Lanthanide-based luminescence biolabelling
Mohamadou Sy, Aline Nonat, Niko Hildebrandt and Loïc J. Charbonnière
DOI: 10.1039/C6CC00922K, Feature Article

C6CC00922K GA


Superior anti-CO poisoning capability: Au-decorated PtFe nanocatalysts for high-performance methanol oxidation
Zhao Cai, Zhiyi Lu, Yongmin Bi, Yaping Li, Yun Kuang and Xiaoming Sun
DOI: 10.1039/C5CC10513G, Communication

C5CC10513G GA


Pharmaceutical nanocrystals confined in porous host systems – interfacial effects and amorphous interphases
N. Sonnenberger, N. Anders, Y. Golitsyn, M. Steinhart, D. Enke, K. Saalwächter and M. Beiner
DOI: 10.1039/C6CC00962J, Communication
From themed collection Pharmaceutical Solids

C6CC00962J GA


Rupture force of cell adhesion ligand tethers modulates biological activities of a cell-laden hydrogel
Min Kyung Lee, Jooyeon Park, Xuefeng Wang, Mehdi Roein-Peikar, Eunkyung Ko, Ellen Qin, Jonghwi Lee, Taekjip Ha and Hyunjoon Kong
DOI: 10.1039/C6CC00036C, Communication

C6CC00036C GA


High-symmetry hydrogen-bonded organic frameworks: air separation and crystal-to-crystal structural transformation
Dong-Dong Zhou, Yan-Tong Xu, Rui-Biao Lin, Zong-Wen Mo, Wei-Xiong Zhang and Jie-Peng Zhang
DOI: 10.1039/C6CC00366D, Communication

C6CC00366D GA

*Access is free through a registered RSC account

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