Archive for the ‘Hot Article’ Category

A single hydrogen bond affects photophysics of chromophores

Green fluorescent protein (GFP) is a luminescent protein with a central chromophore and is used in biological imaging. By modifying the chromophore itself or the protein environment, the photophysical properties can be fine-tuned, yet until recently this has not been well understood. However, Lars Andersen (Aarhus University) and his group have developed a laser-action spectroscopy technique to enable the chromophore to be studied in a vacuum. This has revealed that a single hydrogen bond initiated a 0.5eV shift in the absorption spectrum of the GFP chromophore and highlights the importance of understanding the biophysics of  chromophores and how this can help in the development of new colour chromophores.

Interested to know more?

Read the full article in Chemistry World by Michaela Muehlberg.

Or, take a look at the original communication which is free to access until 6th August 2015:

How far can a single hydrogen bond tune the spectral properties of the GFP chromophore, H. Y. Kiefer et al., Phys. Chem. Chem. Phys., 2015, DOI: 10.1039/C5CP02764K

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Recent HOT articles in PCCP

Check out the following HOT articles, these have all been made free to access for a limited time:

Graphical Abstract
Structure and energetics of the anisole–Arn (n = 1, 2, 3) complexes: high-resolution resonant two-photon and threshold ionization experiments, and quantum chemical calculations

Federico Mazzoni, Maurizio Becucci, Jan Řezáč, Dana Nachtigallová, François Michels, Pavel Hobza and Klaus Müller-Dethlefs
Phys. Chem. Chem. Phys., 2015, 17, 12530-12537
DOI: 10.1039/C5CP01166C

Oxygen diffusion in single crystal barium titanate
Markus Kessel, Roger A. De Souza and Manfred Martin
Phys. Chem. Chem. Phys., 2015, 17, 12587-12597
DOI: 10.1039/C5CP01187F

Vibrational control of electron transfer reactions: A feasibility study for the fast coherent transfer regime
P. Antoniou, Z. Ma, P. Zhang, D. N. Beratan and S. S. Skourtis
Phys. Chem. Chem. Phys., 2015, Advance Article
DOI: 10.1039/C5CP00610D

Three-dimensional sp2-hybridized carbons consisting of orthogonal nanoribbons of graphene and net C
Meng Hu, Xu Dong, Bingchao Yang, Bo Xu, Dongli Yu and Julong He
Phys. Chem. Chem. Phys., 2015, 17, 13028-13033
DOI: 10.1039/C5CP01621E
Graphical Abstract
Two-dimensional electronic-vibrational spectra: modeling correlated electronic and nuclear motion
F. Terenziani and A. Painelli
Phys. Chem. Chem. Phys., 2015, 17, 13074-13081
DOI: 10.1039/C5CP01485A

Self-assembly and coverage dependent thermally induced conformational changes of Ni(II)-meso-tetrakis (4-tert-butylphenyl) benzoporphyrin on Cu(111)
Liang Zhang, Michael Lepper, Michael Stark, Dominik Lungerich, Norbert Jux, Wolfgang Hieringer, Hans-Peter Steinrück and Hubertus Marbach
Phys. Chem. Chem. Phys., 2015, 17, 13066-13073
DOI: 10.1039/C5CP01490E

Gas-phase chemistry of technetium carbonyl complexes
Yang Wang, Zhi Qin, Fang-Li Fan, Hiromitsu Haba, Yukiko Komori, Shi-Wei Cao, Xiao-Lei Wu and Cun-Min Tan
Phys. Chem. Chem. Phys., 2015, 17, 13228-13234
DOI: 10.1039/C5CP00979K

Generating hydrated electrons through photoredox catalysis with 9-anthrolate
Christoph Kerzig and Martin Goez
Phys. Chem. Chem. Phys., 2015, 17, 13829-13836
DOI
: 10.1039/C5CP01711D

Hybrid nanostructures for SERS: materials development and chemical detection
Sara Fateixa, Helena I. S. Nogueira and Tito Trindade
Phys. Chem. Chem. Phys., 2015, Advance Article
DOI: 10.1039/C5CP01032B

Is seven the minimum number of water molecules per ion pair for assured biological activity in ionic liquid–water mixtures?
Hiroyuki Ohno, Kyoko Fujita and Yuki Kohno
Phys. Chem. Chem. Phys., 2015, Advance Article
DOI: 10.1039/C5CP00768B

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Recent HOT PCCP Articles

Check out the following HOT articles, these have all been made free to access for a limited time:

Hidden photoinduced reactivity of the blue fluorescent protein mKalama1
Russell B. Vegh, Dmitry A. Bloch, Andreas S. Bommarius, Michael Verkhovsky, Sergei Pletnev, Hideo Iwaï, Anastasia V. Bochenkova and Kyril M. Solntsev
Phys. Chem. Chem. Phys., 2015, Advance Article
DOI: 10.1039/C5CP00887E, Paper

Rayleigh light scattering properties of atmospheric molecular clusters consisting of sulfuric acid and bases
Jonas Elm, Patrick Norman and Kurt V. Mikkelsen
Phys. Chem. Chem. Phys., 2015, Advance Article
DOI: 10.1039/C5CP01012H, Paper

Comparison of the plasmonic performances between lithographically fabricated and chemically grown gold nanorods

Lei Shao, Yuting Tao, Qifeng Ruan, Jianfang Wang and Hai-Qing Lin   Physicochemical design and analysis of self-propelled objects that are characteristically sensitive to environments
Phys. Chem. Chem. Phys., 2015,17, 10861-10870
DOI: 10.1039/C5CP00715A, Paper

Order and disorder around Cr3+ in chromium doped persistent luminescent AB2O4 spinels
Neelima Basavaraju, Kaustubh R. Priolkar, Didier Gourier, Aurélie Bessière and Bruno Viana
Phys. Chem. Chem. Phys., 2015,17, 10993-10999
DOI: 10.1039/C5CP01097G, Paper

Physicochemical design and analysis of self-propelled objects that are characteristically sensitive to environments

Satoshi Nakata, Masaharu Nagayama, Hiroyuki Kitahata, Nobuhiko J. Suematsu and Takeshi Hasegawa
Phys. Chem. Chem. Phys., 2015,17, 10326-10338
DOI: 10.1039/C5CP00541H, Perspective

Strong field laser control of photochemistry

Ignacio R. Solá, Jesús González-Vázquez, Rebeca de Nalda and Luis Bañares
Phys. Chem. Chem. Phys., 2015, Advance Article
DOI: 10.1039/C5CP00627A, Perspective

Nuclear quantum tunnelling in enzymatic reactions – an enzymologist’s perspective  Strong field laser control of photochemistry
Linus O. Johannissen, Sam Hay and Nigel S. Scrutton
Phys. Chem. Chem. Phys., 2015, Advance Article
DOI: 10.1039/C5CP00614G, Perspective

Internal heavy atom effects in phenothiazinium dyes: enhancement of intersystem crossing via vibronic spin–orbit coupling
Angela Rodriguez-Serrano, Vidisha Rai-Constapel, Martha C. Daza, Markus Doerr and Christel M. Marian
Phys. Chem. Chem. Phys., 2015, Advance Article
DOI: 10.1039/C5CP00194C, Paper

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Rivers, Trees And The Many Structures Of Carbon Nanotubes

When a river comes up against an obstacle, it will split and flow around it before joining up again, thereby forming a central island. Similarly, carbon nanotubes can be grown to split apart and then re-join through the judicious use of metal catalysts. The authors of this communication, Hasegawa and Kohno, identified this phenomenon and coined the term ‘origami mechanism’ to describe it.

My river analogy is, however, a rather simplistic take on what they found. In order to draw a more accurate comparison I must turn to tree limbs. Imagine a branch with a linear split; there will be a hole in the middle, flanked by bare timber, and the bark will be effectively split into two halves with clearly defined edges. This would be equivalent to the carbon nanotube splitting into two ribbons with terminal edges, before reforming into an entire nanotube, as one might expect to observe.

However, this does not entirely tally with what Hasegawa and Kohno actually found. Their findings align more closely with the example of a wisteria, which has co-dominant stems, which grow apart and then re-fuse as the plant twists around itself as it grows. The difference here is that each of the stems, whilst apart, still retains a full covering of bark, as it is a distinct branch. Indeed, the authors found that the nanoribbons take the form of entire flattened nanotubes before they join up again.

Of course, the reality is more complex still, and you can’t beat reading about it in the authors’ own words, which incidentally, I strongly encourage you to do.

Splitting and joining in carbon nanotube/nanoribbon/nanotetrahedron growth
Takayuki Hasegawa and Hideo Kohno
Phys. Chem. Chem. Phys., 2015, DOI: 10.1039/C4CP05139D

Graphical abstract: Splitting and joining in carbon nanotube/nanoribbon/nanotetrahedron growth

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Zeolites net new carbon allotropes

Previously unknown carbon allotropes have been predicted by scientists exploring their links with well-known network topologies. The new structures are highly stable and transparent, some with larger optical band gaps than diamond.

Advanced computational techniques are leading the search for new forms of carbon and other group 14 elements. Now, Davide Proserpio from the University of Milan, Italy, and co-workers, have shown that fundamental network descriptors known about and catalogued for many years can help predict as well as classify and compare allotropes.

Interested to know more?

Read the full article in Chemistry World by Jonathan Midgley.

Take a look at the original Open Access research article:

From zeolite nets to sp3 carbon allotropes: a topology-based multiscale theoretical study
Igor A. Baburin, Davide M. Proserpio, Vladimir A. Saleev and Alexandra V. Shipilova
Phys. Chem. Chem. Phys., 2015, DOI: 10.1039/C4CP04569F

Six new carbon allotropes

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Recent HOT PCCP articles

Check out the following HOT articles, these have all been made free to access for a limited time:

Optical activity in the scattering of structured light
Robert P. Cameron and Stephen M. Barnett
Phys. Chem. Chem. Phys., 2014,16, 25819-25829
DOI: 10.1039/ C4CP03505D

Ultrafast photoinduced charge transport in Pt(II) donor–acceptor assembly bearing naphthalimide electron acceptor and phenothiazine electron donor
Igor V. Sazanovich, Jonathan Best, Paul A. Scattergood, Michael Towrie, Sergei A. Tikhomirov, Oleg V. Bouganov, Anthony J. H. M. Meijer and Julia A. Weinstein
Phys. Chem. Chem. Phys., 2014,16, 25775-25788
DOI: 10.1039/C4CP03995E

Temperature sensing from the emission rise times of Eu3+ in SrY2O4
V. Lojpur, Ž. Antić and M. D. Dramićanin
Phys. Chem. Chem. Phys., 2014,16, 25636-25641
DOI: 10.1039/C4CP04141K

Effects of thermal disorder on the electronic properties of ordered polymers
Marko Mladenović and Nenad Vukmirović
Phys. Chem. Chem. Phys., 2014,16, 25950-25958
DOI: 10.1039/C4CP04425H

First principles study of point defects in SnS

Brad D. Malone, Adam Gali and Efthimios Kaxiras
Phys. Chem. Chem. Phys., 2014,16, 26176-26183
DOI: 10.1039/C4CP03010A

Thermal conductivity of organic bulk heterojunction solar cells: an unusual binary mixing effect
Zhi Guo, Doyun Lee, Joseph Strzalka, Haifeng Gao, Libai Huang, Ali M. Khounsary and Tengfei Luo
Phys. Chem. Chem. Phys., 2014,16, 26359-26364
DOI: 10.1039/C4CP04099F

Stacking disorder in ice I
Tamsin L. Malkin, Benjamin J. Murray, Christoph G. Salzmann, Valeria Molinero, Steven J. Pickering and Thomas F. Whale
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP02893G

Electronic effects of ligand substitution on metal–organic framework photocatalysts: the case study of UiO-66
Lijuan Shen, Ruowen Liang, Mingbu Luo, Fenfen Jing and Ling Wu
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP04162C

Spin-crossover in phenylazopyridine-functionalized Ni–porphyrin: trans–cis isomerization triggered by π–π interactions

Gerard Alcover-Fortuny, Coen de Graaf and Rosa Caballol
Phys. Chem. Chem. Phys., 2014
DOI: 10.1039/C4CP04402A

Hidden aspects of the Structural theory of chemistry: MC-QTAIM analysis reveals “alchemical” transformation from a triatomic to a diatomic structure
Mohammad Goli and Shant Shahbazian
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP03722G

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New Solution to Ancient Problem

Take two bodies of water whose initial characteristics are identical, except for their temperature. Measure how long it takes these two bodies of water to cool to the same specified lower temperature. Explain why the initially hotter water apparently cools faster.

Alright, so it’s a bit more complicated than that, with precise experimental parameters that must be adhered to, but the essence of the problem remains the same. There appears to be a difference in the relative rates at which different bodies of water cool depending on their starting temperatures. The Mpemba effect (as it is often known) may sound simple, but it is a phenomenon that is often disputed, deceptively difficult to analyse, has many proffered explanations and a historical pedigree going back to Aristotle. A few years ago the RSC even held a competition to try to settle the matter and reach a consensus of opinion. Yet despite the declaration of a winner, apparently not everybody agreed that the question was quite settled once and for all.

Now, Zhang et al. are throwing their hat into the ring with a new answer. They say that they’ve approached the problem from an unusual angle, and present new quantitative evidence to support their argument. So have they finally cracked it, or is this just the latest in a long line of possible explanations that extends back over thousands of years? With a topic as divisive as this, I’m not placing any bets just yet.

Read the original manuscript online now!

Hydrogen-bond memory and water-skin supersolidity resolving the Mpemba paradox

Xi Zhang, Yongli Huang, Zengsheng Ma, Yichun Zhou, Ji Zhou, Weitao Zheng, Qing Jiang and Chang Q. Sun

Phys. Chem. Chem. Phys., 2014, DOI: 10.1039/C4CP03669G

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Recent HOT PCCP articles

Check out the following HOT articles, these have all been made free to access for a limited time:

Vibrational dynamics and solvatochromism of the label SCN in various solvents and hemoglobin by time dependent IR and 2D-IR spectroscopyVibrational dynamics and solvatochromism of the label SCN in various solvents and hemoglobin by time dependent IR and 2D-IR spectroscopy
Luuk J. G. W. van Wilderen, Daniela Kern-Michler, Henrike M. Müller-Werkmeister and Jens Bredenbeck
Phys. Chem. Chem. Phys., 2014,16, 19643-19653
DOI: 10.1039/C4CP01498G

Excited-state wavepacket and potential reconstruction by coherent anti-Stokes Raman scattering
David Avisar and David J. Tannor
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP03233K

Creating electrochemical gradients by light: from bio-inspired concepts to photoelectric conversion
Xiaojiang Xie and Eric Bakker
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP02566K

Potential energy surfaces and quasiclassical trajectory study of the O + H2+ → OH+ + H, OH + H+ proton and hydrogen atom transfer reactions and isotopic variants (D2+, HD+)
Miguel Paniagua, Rodrigo Martínez, Pablo Gamallo and Miguel González
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP02631D

Hydrogen bonding, halogen bonding and lithium bonding: an atoms in molecules and natural bond orbital perspective towards conservation of total bond order, inter- and intra-molecular bonding
Abhishek Shahi and Elangannan Arunan
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP02585G

Photocatalytic generation of solar fuels from the reduction of H2O and CO2: a look at the patent literaturePhotocatalytic generation of solar fuels from the reduction of H2O and CO2: a look at the patent literature
Stefano Protti, Angelo Albini and Nick Serpone
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP02828G

Water-mediated interactions between trimethylamine-N-oxide and urea
Johannes Hunger, Niklas Ottosson, Kamila Mazur, Mischa Bonn and Huib J. Bakker
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP02709D

On the directionality and non-linearity of halogen and hydrogen bonds
J. Grant Hill and Anthony C. Legon
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP03376K

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Recent HOT PCCP articles

Check out the following HOT articles, these have all been made free to access for a limited time:

Butterfly effects: novel functional materials inspired from the wings scalesButterfly effects: novel functional materials inspired from the wings scales
Wang Zhang, Jiajun Gu, Qinglei Liu, Huilan Su, Tongxiang Fan and Di Zhang
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP01513D

Fast single-molecule FRET spectroscopy: theory and experiment
Hoi Sung Chung and Irina V. Gopich
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP02489C

A unified study for water adsorption on metals: meaningful models from structural motifs
Guillem Revilla-López and Núria López
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP02508C

Interaction of electrons with cisplatin and the subsequent effect on DNA damage: a density functional theory study
Hsing-Yin Chen, Hui-Fen Chen, Chai-Lin Kao, Po-Yu Yang and Sodio C. N. Hsu
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP02306DCompeting atmospheric reactions of CH2OO with SO2 and water vapour

Competing atmospheric reactions of CH2OO with SO2 and water vapour
Torsten Berndt, Jens Voigtländer, Frank Stratmann, Heikki Junninen, Roy L. Mauldin III, Mikko Sipilä, Markku Kulmala and Hartmut Herrmann
Phys. Chem. Chem. Phys., 2014, Advance Article
DOI: 10.1039/C4CP02345E

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Perception, Inspiration, Application: The Effects of Butterflies’ Wings

I like picking out Perspective articles to focus on in these blog posts. They give me a chance to read about a field that I know less about, phrased in language that is accessible to those of us who aren’t specialists in that particular area. This then allows me to easily pick out the major themes and hopefully inspire others to follow me in reading a welcoming overview of a different research field. However, even in the spirit of broadening my horizons I wasn’t expecting butterfly wings in PCCP! It stuck out so obviously that I immediately knew I had found the next article I wanted to feature.

How many physical chemists or chemical physicists have extensive lepidopteral knowledge? I’m willing to bet it’s only a handful. In this perspective article, Zhang and co-authors tell the story of how we’re making use of the structural secrets of butterfly wings that have been revealed by previous research.

The study of the structure of butterfly wings is nothing new, its been going on for centuries. Yet it’s only recently that we’ve been able to apply that knowledge and develop new concepts and technologies as structural characterisation has reached the nanoscale. You might be surprised by the diversity of the research areas and applications that are mentioned, I certainly was!

Read the full article online here:

W. Zhang et al., Phys. Chem. Chem. Phys, 2014, DOI: 10.1039/C4CP01513D

Graphical abstract

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