Solar cells and photosensitizers

Solar panels © Shutterstock

© Shutterstock

Dye-sensitized solar cells (DSSCs) are generating a huge amount of interest as we strive to develop new ways of harnessing ‘green’ energy from renewable resources, such as sunlight. 

Below is a selection of articles from Photochemical & Photobiological Scienceswhich showcase some of the recent advances in the field of DSSCs and photosensitizers.  Read these articles for free until the 18th April!

Synthetic analogues of anthocyanins as sensitizers for dye-sensitized solar cells, Giuseppe Calogero, Alessandro Sinopoli, Ilaria Citro, Gaetano Di Marco, Vesselin Petrov, Ana M. Diniz, A. Jorge Parola and Fernando Pina, Photochem. Photobiol. Sci., 2013, DOI: 10.1039/C3PP25347C

Preparation of ketocoumarins as heavy atom-free triplet photosensitizers for triplet–triplet annihilation upconversion, Dandan Huang, Jifu Sun, Lihua Ma, Caishun Zhang and Jianzhang Zhao, Photochem. Photobiol. Sci., 2013, DOI: 10.1039/C3PP25416J

Fluorescence and two-photon absorption of push–pull aryl(bi)thiophenes: structure–property relationships, Emilie Genin, Vincent Hugues, Guillaume Clermont, Cyril Herbivo, M. Cidália R. Castro, Alain Comel, M. Manuela M. Raposo and Mireille Blanchard-Desce, Photochem. Photobiol. Sci., 2012, 11, 1756-1766

Photocurrent enhancement tuned with plasmonic resonance in self-assembled monolayers fabricated on regularly arrayed gold nanostructures, Kosuke Sugawa, Shuichi Hirono, Tsuyoshi Akiyama and Sunao Yamada, Photochem. Photobiol. Sci., 2012, 11, 318-322

Photoelectrochemical, photophysical and morphological studies of electrostatic layer-by-layer thin films based on poly(p-phenylenevinylene) and single-walled carbon nanotubes, L. C. P. Almeida, V. Zucolotto, R. A. Domingues, T. D. Z. Atvars and A. F. Nogueira, Photochem. Photobiol. Sci., 2011, 10, 1766-1772

CdS-sensitized TiO2 nanocorals: hydrothermal synthesis, characterization, application, S. S. Mali, S. K. Desai, D. S. Dalavi, C. A. Betty, P. N. Bhosale and P. S. Patil, Photochem. Photobiol. Sci., 2011, 10, 1652-1658

Transduction of excited state energy between covalently linked porphyrins and phthalocyanines, Anita Hausmann, Ana R. M. Soares, M. Victoria Martínez-Díaz, Maria G. P. M. S. Neves, Augusto C. Tomé, José A. S. Cavaleiro, Tomas Torres and Dirk M. Guldi, Photochem. Photobiol. Sci., 2010, 9, 1027-1032

Optimization studies of bio-hydrogen production in a coupled microbial electrolysis–dye sensitized solar cell system, Folusho Francis Ajayi, Kyoung-Yeol Kim, Kyu-Jung Chae, Mi-Jin Choi, In Seop Chang and In S. Kim, Photochem. Photobiol. Sci., 2010, 9, 349-356

Stay up-to-date with the latest developments from Photochemical & Photobiological Sciences by signing up for free table of contents alerts.

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

Top 10 most accessed articles in 2012

Do you want to know what your colleagues were reading during 2012?  The following articles in Photochemical & Photobiological Sciences were the most accessed over the course of the year:

UV-induced DNA damage and repair: a review
Rajeshwar P. Sinha and Donat-P. Häder
Photochem. Photobiol. Sci., 2002,1, 225-236
DOI: 10.1039/B201230H, Perspective

Photoinduced formation of reversible dye radicals and their impact on super-resolution imaging
Sebastian van de Linde, Ivan Krstić, Thomas Prisner, Sören Doose, Mike Heilemann and Markus Sauer
Photochem. Photobiol. Sci., 2011,10, 499-506
DOI: 10.1039/C0PP00317D, Paper

Photo-oxidation of proteins
David I. Pattison, Aldwin Suryo Rahmanto and Michael J. Davies
Photochem. Photobiol. Sci., 2012,11, 38-53
DOI: 10.1039/C1PP05164D, Perspective

Engineered photoreceptors as novel optogenetic tools
Andreas Möglich and Keith Moffat
Photochem. Photobiol. Sci., 2010,9, 1286-1300
DOI: 10.1039/C0PP00167H, Perspective

Targeted photodynamic therapy of breast cancer cells using antibody–phthalocyanine–gold nanoparticle conjugates
Tanya Stuchinskaya, Miguel Moreno, Michael J. Cook, Dylan R. Edwards and David A. Russell
Photochem. Photobiol. Sci., 2011,10, 822-831
DOI: 10.1039/C1PP05014A, Paper

Photoactivatable fluorophores and techniques for biological imaging applications
Wen-hong Li and Genhua Zheng
Photochem. Photobiol. Sci., 2012,11, 460-471
DOI: 10.1039/C2PP05342J, Perspective

Photoremovable protecting groups: reaction mechanisms and applications
Anna Paola Pelliccioli and Jakob Wirz
Photochem. Photobiol. Sci., 2002,1, 441-458
DOI: 10.1039/B200777K, Perspective

Human safety review of “nano” titanium dioxide and zinc oxide
Karsten Schilling, Bobbie Bradford, Dominique Castelli, Eric Dufour, J. Frank Nash, Wolfgang Pape, Stefan Schulte, Ian Tooley, Jeroen van den Bosch and Florian Schellauf
Photochem. Photobiol. Sci., 2010,9, 495-509
DOI: 10.1039/B9PP00180H, Perspective

UV wavelength-dependent DNA damage and human non-melanoma and melanoma skin cancer
Gerd P. Pfeifer and Ahmad Besaratinia
Photochem. Photobiol. Sci., 2012,11, 90-97
DOI: 10.1039/C1PP05144J, Perspective

Controlled surface trap state photoluminescence from CdS QDs impregnated in poly(methyl methacrylate)
Santanu Karan, Manisree Majumder and Biswanath Mallik
Photochem. Photobiol. Sci., 2012,11, 1220-1232
DOI: 10.1039/C2PP25023C, Paper

Take a look at the articles and then post your thoughts and comments below.

Interested in submitting your own work to Photochemical & Photobiological Sciences? Submit online today, or email us with your suggestions.

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

PPS issue 3 now available online!

Issue 3 of Photochemical & Photobiological Sciences is now available to read online.

Front cover of PPS issue 3, 2013The front cover this month feature work by Halan Prakash and colleagues from the Birla Institute of Technology and Science, India, who looked at the ability of persulphate to cause degradation of organic contaminants and also its effect on bacteria in aqueous media. The team used methyl orange, a model azo dye, and Gram positive and negative bacteria. Visible light activation of persulphate was achieved using ruthenium(II) polypyridyl complexes, which produced sulphate radicals and led to significant degradation of methyl orange as well as complete inactivation of bacteria.

Photodegradation of methyl orange and photoinactivation of bacteria by visible light activation of persulphate using a tris(2,2′-bipyridyl)ruthenium(II) complex, Gokulakrishnan Subramanian, Priyadarshini Parakh and Halan Prakash, Photochem. Photobiol. Sci., 2013, 12, 456-466

You can keep up to date with the latest developments from Photochemical & Photobiological Sciences by signing up for free table of contents alerts.

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

Highly fluorescent peptide nanoribbon impregnated with Sn-porphyrin as a potent DNA sensor

Peptide nanostructures have recently been identified as an important bio-functional nanostructure.  Researchers have demonstrated that modification of these peptide nanostructures can greatly expand their biological applications.

Graphical abstract of C3PP25337FIn this work, Minjoong Yoon and colleagues from Chungnam National University, Republic of Korea, have prepared peptide nanoribbons (PNRs) impregnated with a Sn-porphyrin via solvothermal self-assembly.  The resulting nanoribbons are highly fluorescent and thermo-stable.  However, the fluorescence intensity and life-time were selectively affected upon interaction with the nucleotide base sequences of DNA, thus implying that these Sn-porphyrin-PNRs could be useful as a biocompatible DNA sensor.

Read the full article for free until the 7th March 2013!

Highly fluorescent peptide nanoribbon impregnated with Sn-porphyrin as a potent DNA sensor, Sreenivasan Koliyat Parayil, Jooran Lee and Minjoong Yoon, Photochem. Photobiol. Sci., 2013, DOI: 10.1039/C3PP25337F

Keep up to date with the latest developments from Photochemical & Photobiological Sciences by signing up for free table of contents alerts.

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

PPS Issue 2 now online

PPS Issue 2 coverPPS Issue 2 is now online featuring artwork from Cristiano Viappiani on the front cover highlighting the communication ‘A photochromic bacterial photoreceptor with potential for super-resolution microscopy’. In this communication Christiano Viappiani and co-workers from Italy have exploited photoswitching between the dark (YtvAD) and the light (YtvAL) adapted states of the bacterial photoreceptor YtvA (from Bacillus subtilis) to obtain FPALM images of live Escherichia coli cells.

Interested in knowing more? Read the article in full, free for 6 weeks…

A photochromic bacterial photoreceptor with potential for super-resolution microscopy
Aba Losi, Wolfgang Gärtner, Sarah Raffelberg, Francesca Cella Zanacchi, Paolo Bianchini, Alberto Diaspro, Carmen Mandalari, Stefania Abbruzzetti and Cristiano Viappiani
Photochem. Photobiol. Sci., 2013, 12, 231-235, DOI: 10.1039/C2PP25254F

Read PPS Issue 2 in full here and keep up to date with new issues by signing up for e-alerts.

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

Photochemistry and photophysics of UV filter decomposition products in the human eye

The human eye is photoprotected by molecular UV filters which consist of low-molecular weight compounds in the lens that absorb UV light in the 300-400 nm spectral region.  The UV filters decompose to give a mixture of products, which can include kynurenine yellow (KNY) and kynurenic acid (KNA) from the UV filter kynurenine.  These compounds have only been found in very small or negligible concentrations in the human lens which may indicate that they are much more chemically or photochemically active than the original UV filters.

Graphical abstract for C2PP25357GIn this work, Yuri Tsentalovich and colleagues from Russia, Switzerland and The Netherlands investigated the photochemistry and photophysics of neutral aqueous solutions KNY and KNA using time-resolved optical spectroscopy.  Their work has shown that both of these molecules are significantly more photoactive and photostable than the parent UV filter.  These species and their products may react with the protein environment in the lens and could contribute to the development of oxidative stress conditions – a main factor in the development of cataract.

Read this article for free until the 8th February 2013:

Photochemistry of aqueous solutions of kynurenic acid and kynurenine yellow, Ekaterina A. Zelentsova, Peter S. Sherin, Olga A. Snytnikova, Robert Kaptein, Eric Vauthey and Yuri P. Tsentalovich, Photochem. Photobiol. Sci., 2013, DOI: 10.1039/C2PP25357G

Keep up to date with the latest developments from Photochemical & Photobiological Sciences by signing up for free table of contents alerts.

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

First issue of 2013 now online!

Welcome to issue 1 of Photochemical & Photobiological Sciences for 2013!  This is a themed issue on “Current topics in photodermatology” – read the editorial by Guest Editors Alex Anstey and Fraz Trautinger here.

The front cover of this issue highlights a perspective article by Alex Anstey and Flora Kiss which looks at UVB-mediated photosensitivity disorders. The authors look at the congenital skin disorders associated with photosensitivity to UVB, although highlight that photosensitivity to UVB alone is very rare and more typically includes photosensitivity to UVA. These rare disorders provide opportunities to study and gain insights into the diverse mechanisms involved in mediating photosentivity of these conditions.

Read the full article for free!

A review of UVB-mediated photosensitivity disorders, F. Kiss and A. V. Anstey, Photochem. Photobiol. Sci., 2013, 12, 35-44

You can keep up to date with the latest developments from Photochemical & Photobiological Sciences by signing up for free table of contents alerts.

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

Photodegradation of methyl orange and photoinactivation of bacteria

Scientists from India used visible light activation of persulphate by a ruthenium(II) complex to investigate it’s ability to cause degradation of organic contaminants.

Graphical abstract of C2PP25316JHalan Prakash and colleagues from the Birla Institute of Technology and Science, India, looked at the ability of persulphate to cause degradation of organic contaminants and also its effect on bacteria in aqueous media. The team used methyl orange, a model azo dye, and Gram positive and negative bacteria. Visible light activation of persulphate was achieved using ruthenium(II) polypyridyl complexes, which produced sulphate radicals and led to significant degradation of methyl orange as well as complete inactivation of bacteria.

The authors note that to take this appraoch forward and make it more practical for actual application in the environment, strategies for removal of the ruthenium photosensitizer and its degradation products need to be developed.

Read the full article for free until the 3rd January 2013!

Photodegradation of methyl orange and photoinactivation of bacteria by visible light activation of persulphate using a tris(2,2′-bipyridyl)ruthenium(II) complex, Gokulakrishnan Subramanian, Priyadarshini Parakh and Halan Prakash, Photochem. Photobiol. Sci., 2013, DOI: 10.1039/C2PP25316J

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

Issue 12 of PPS now available to read online!

The last issue of the year for Photochemical & Photobiological Sciences is now published online.  This issue includes a collection of articles looking at the issues surrounding potential increase of vitamin D status to provide better health.  Read the Editorial by Guest Editor Vivienne Reeve here.

PPS issue 12, 2012 - front coverThe front cover of this issue features work by Pameli Datta and colleagues from Cophagen University Hospital, Lillebaelt Hospital and the Danish Meteorological Institute, Denmark.  The authors compared the doses of natural solar ultraviolet radiation (UVR) and artificial UVR needed to increase serum 25-hydroxyvitamin-D3.  The team found that artificial UVR was estimated to be at least eight times more effective in inducing 25-hydroxyvitamin-D3 synthesis than solar UVR.

Read the full article for free for 6 weeks!

Increase in serum 25-hydroxyvitamin-D3 in humans after solar exposure under natural conditions compared to artificial UVB exposure of hands and face, Pameli Datta, Morten Karsten Bogh, Peter Olsen, Pia Eriksen, Anne Vibeke Schmedes, Mette Marie-Louise Grage, Peter Alshede Philipsen and Hans Christian Wulf, Photochem. Photobiol. Sci., 2012, 11, 1817-1824

You may also be interested to read these articles on vitamin D – free to access for 3 weeks:

Serum 25-hydroxyvitamin-D responses to multiple UV exposures from solaria: inferences for exposure to sunlight, Richard McKenzie, Robert Scragg, Ben Liley, Paul Johnston, John Wishart, Alistair Stewart and Roshani Prematunga, Photochem. Photobiol. Sci., 2012, 11, 1174-1185

A computational model for previtamin D3 production in skin, Merve Meinhardt-Wollweber and Ronald Krebs, Photochem. Photobiol. Sci., 2012, 11, 731-737

Vitamin D-fence, Katie M. Dixon,  Vanessa B. Sequeira,  Aaron J. Camp and Rebecca S. Mason, Photochem. Photobiol. Sci., 2010, 9, 564-570

Is the action spectrum for the UV-induced production of previtamin D3 in human skin correct?, Mary Norval, Lars Olof Björn and Frank R. de Gruijl, Photochem. Photobiol. Sci., 2010, 9, 11-17

You can keep up to date with the latest developments from Photochemical & Photobiological Sciences by signing up for free table of contents alerts.

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)

Top ten most accessed articles in September

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

Brookite versus anatase TiO2 photocatalysts: phase transformations and photocatalytic activities
Tarek A. Kandiel, Lars Robben, Ayad Alkaim and Detlef Bahnemann
Photochem. Photobiol. Sci., 2013, Advance Article
DOI: 10.1039/C2PP25217A

Photoinduced formation of reversible dye radicals and their impact on super-resolution imaging
Sebastian van de Linde, Ivan Krstic, Thomas Prisner, Sören Doose, Mike Heilemann and Markus Sauer
Photochem. Photobiol. Sci., 2011, 10, 499-506
DOI: 10.1039/C0PP00317D

Cyanostilben-based derivatives: mechanical stimuli-responsive luminophors with aggregation-induced emission enhancement
Yujian Zhang, Jingwei Sun, Gaofeng Bian, Yiyi Chen, Mi Ouyang, Bin Hu and Cheng Zhang
Photochem. Photobiol. Sci., 2012, 11, 1414-1421
DOI: 10.1039/C2PP05404C

NIR fluorescent biotinylated cyanine dye: optical properties and combination with quantum dots as a potential sensing device
Guillermo O. Menéndez, María Eva Pichel, Carla C. Spagnuolo and Elizabeth A. Jares-Erijman
Photochem. Photobiol. Sci., 2012, Advance Article
DOI: 10.1039/C2PP25174D

Protective actions of vitamin D in UVB induced skin cancer
Daniel D. Bikle
Photochem. Photobiol. Sci., 2012, Advance Article
DOI: 10.1039/C2PP25251A

Engineered photoreceptors as novel optogenetic tools
Andreas Möglich and Keith Moffat
Photochem. Photobiol. Sci., 2010, 9, 1286-1300
DOI: 10.1039/C0PP00167H

ß-Cyclodextrin polymer nanoparticles as carriers for doxorubicin and artemisinin: a spectroscopic and photophysical study
Resmi Anand, Francesco Manoli, Ilse Manet, Samia Daoud-Mahammed, Valentina Agostoni, Ruxandra Gref and Sandra Monti
Photochem. Photobiol. Sci., 2012, 11, 1285-1292
DOI: 10.1039/C2PP25014D

UV-induced DNA damage and repair: a review
Rajeshwar P. Sinha and Donat-P. Häder
Photochem. Photobiol. Sci., 2002, 1, 225-236
DOI: 10.1039/B201230H

A genetically-encoded photosensitiser demonstrates killing of bacteria by purely endogenous singlet oxygen
Rubén Ruiz-González, John H. White, Montserrat Agut, Santi Nonell and Cristina Flors
Photochem. Photobiol. Sci., 2012, 11, 1411-1413
DOI: 10.1039/C2PP25126D

Effects of solar UV radiation on aquatic ecosystems and interactions with climate change
D.-P. Häder, H. D. Kumar, R. C. Smith and R. C. Worrest
Photochem. Photobiol. Sci., 2007, 6, 267-285
DOI: 10.1039/B700020K

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

Fancy submitting an article to PPS? Then why not submit to us today!

Digg This
Reddit This
Stumble Now!
Share on Facebook
Bookmark this on Delicious
Share on LinkedIn
Bookmark this on Technorati
Post on Twitter
Google Buzz (aka. Google Reader)