PPS Blog

Issue 4 of Photochemical & Photobiological Sciences is now available to read online.

The front cover this month features work by Maria Faustino, Adelaide Almeida and co-workers from Aveiro, Portugal. In their work they set out to assess the efficiency of antimicrobial photodynamic inactivation (PDI) on clinical multidrug-resistant bacteria in hospital wastewaters, in order to evaluate its potential use in treating hospital effluents.

Read the full article – it’s free to access for the next six weeks:
Photodynamic inactivation of multidrug-resistant bacteria in hospital wastewaters: influence of residual antibiotics
Joana Almeida, João P. C. Tomé, Maria G. P. M. S. Neves, Augusto C. Tomé, José A. S. Cavaleiro, Ângela Cunha, Liliana Costa, Maria A. F. Faustino and Adelaide Almeida  
Photochem. Photobiol. Sci., 2014, 13, 626-633, DOI: 10.1039/C3PP50195G

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

The front cover this month features work by Carlos Lodeiro and co-workers from Lisbon, Portugal. In their work report the synthesis of bis(indolyl)methane derivatives bearing functionalized arylthiophene spacers, and explore their solvatochromic behaviour in the ground and excited states.

Read the article in full – it’s free to access for the next six weels:
Synthesis and solvatochromism studies of novel bis(indolyl)methanes bearing functionalized arylthiophene groups as new colored materials
Elisabete Oliveira, Rosa M. F. Baptista, Susana P. G. Costa, M. Manuela M. Raposo and Carlos Lodeiro  
Photochem. Photobiol. Sci., 2014, 13, 492-498, DOI: 10.1039/C3PP50352F

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The top 10 most accessed Photochemical & Photobiological Sciences articles in 2013 were as follows:

Singlet oxygen generation using a porous monolithic polymer supported photosensitizer: potential application to the photodynamic destruction of melanoma cells
M. Isabel Burguete, Francisco Galindo, Raquel Gavara, Santiago V. Luis, Miguel Moreno, Paul Thomas and David A. Russell  
Photochem. Photobiol. Sci., 2009,8, 37-44, DOI: 10.1039/B810921D, Paper

Light relief: photochemistry and medicine
David Phillips  
Photochem. Photobiol. Sci., 2010,9, 1589-1596, DOI: 10.1039/C0PP00237B, Perspective
From themed collection Photosciences: a look into the future

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

On the genesis of heterogeneous photocatalysis: a brief historical perspective in the period 1910 to the mid-1980s
N. Serpone, A. V. Emeline, S. Horikoshi, V. N. Kuznetsov and V. K. Ryabchuk  
Photochem. Photobiol. Sci., 2012,11, 1121-1150, DOI: 10.1039/C2PP25026H, 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

Engineered photoreceptors as novel optogenetic tools
Andreas Möglich and Keith Moffat  
Photochem. Photobiol. Sci., 2010,9, 1286-1300, DOI: 10.1039/C0PP00167H, Perspective
From themed collection Photofunctional proteins: from understanding to engineering

Signaling mechanisms of LOV domains: new insights from molecular dynamics studies
Peter L. Freddolino, Kevin H. Gardner and Klaus Schulten  
Photochem. Photobiol. Sci., 2013,12, 1158-1170, DOI: 10.1039/C3PP25400C, Paper
From themed collection Blue-light photoreceptors

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
From themed collection Topical and systemic photoprotection

Time-resolved fluorescence microscopy
Klaus Suhling, Paul M. W. French and David Phillips  
Photochem. Photobiol. Sci., 2005,4, 13-22, DOI: 10.1039/B412924P, Perspective
From themed collection In honour of Hiroshi Masuhara

Take a look at the articles, and then let us know your thoughts and comments below.

If you are interested in submitting your own work to Photochemical & Photochemical Sciences, you can submit online today, or email us with your ideas and suggestions. Journal guidelines are available on the website.

The photosensitiser absorbs energy from light and transfers it to surrounding molecules to create reactive oxygen species

Researchers in Portugal looking to find new ways to inactivate multidrug resistant-pathogenic bacteria have found an alternative to the traditional expensive and often ineffective methods for treating hospital effluent.

Hospital wastewater has the potential to be a threat to public health as it can contain bacteria that may facilitate resistance transfer to other species within sewage treatment plants. As Adelaide Almeida, who led the study at the the University of Aveiro explains, ‘some pathogenic bacteria are more concentrated in hospital wastewaters and some of these strains are resistant to antibiotics, such as vancomycin-resistant enterococci and methicillin-resistant Staphylococcus aureus.’

Almeida’s team has shown that photodynamic inactivation (PDI) can effectively inactivate multidrug resistant-pathogenic bacteria. PDI uses a nontoxic photosensitiser, in this case a cationic porphyrin, which absorbs energy from visible light and transfers it to other surrounding molecules, creating highly cytotoxic reactive oxygen species (ROS) that inactivate microbial cells.

Read the full article in Chemistry World»

Read the original journal article in Photochemical & Photobiological Sciences:
Photodynamic inactivation of multidrug-resistant bacteria in hospital wastewaters: influence of residual antibiotics
Joana Almeida, Joao Tome, Graça Neves, Augusto Tomé, J A S Cavaleiro, Liliana Costa, Ângela Cunha, Maria Amparo Ferreira Faustino and Adelaide Almeida  
Photochem. Photobiol. Sci., 2014, Accepted Manuscript, DOI: 10.1039/C3PP50195G, Paper

Issue 1 of Photochemical & Photobiological Sciences is now available to read online.

The front cover this month features work by Luiz Francisco, M. L. Ciscato and co-workers from Santo André, Brazil. In their work they investigate the chemiluminescent reaction of a 2-coumaranone and find evidence supporting a 1,2-dioxetanone as an intermediate.

Read the article in full – it’s free to access for the next six weeks:
Evidence supporting a 1,2-dioxetanone as an intermediate in the benzofuran-2(3H)-one chemiluminescence
Luiz Francisco M. L. Ciscato, Fernando H. Bartoloni, Aline S. Colavite, Dieter Weiss, Rainer Beckert and Stefan Schramm  
Photochem. Photobiol. Sci., 2014, 13, 32-37, DOI: 10.1039/C3PP50345C

Keep up-to-date with the latest content in Photochemical & Photobiological Sciences by registering for our free table of contents alerts.

The 10 most-accessed Photochemical & Photobiological Sciences articles between July and September 2013 were as follows:

The influence of Pluronics® on dark cytotoxicity, photocytotoxicity, localization and uptake of curcumin in cancer cells: studies of curcumin and curcuminoids XLIX
Ravinder Singh, Hanne Hjorth Tønnesen, Solveig Kristensen and Kristian Berg  
Photochem. Photobiol. Sci., 2013,12, 559-575, DOI: 10.1039/C2PP25249J, Paper

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

Synthesis of some fluorescent benzimidazole derivatives using cobalt(II) hydroxide as highly efficient catalyst – spectral and physico-chemical studies and ESIPT process
J. Jayabharathi, V. Thanikachalam and K. Jayamoorthy  
Photochem. Photobiol. Sci., 2013,12, 1761-1773, DOI: 10.1039/C3PP50083G, Paper

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

Azacrown[N,S,O]-modified porphyrin sensor for detection of Ag+, Pb2+, and Cu2+
Yuting Chen and Kaili Wang  
Photochem. Photobiol. Sci., 2013,12, 2001-2007, DOI: 10.1039/C3PP50126D, Paper

Intracellular photodynamic therapy with photosensitizer-nanoparticle conjugates: cancer therapy using a ‘Trojan horse’
Martina E. Wieder, Duncan C. Hone, Michael J. Cook, Madeleine M. Handsley, Jelena Gavrilovic and David A. Russell  
Photochem. Photobiol. Sci., 2006,5, 727-734, DOI: 10.1039/B602830F, Paper

Application of solution processable squaraine dyes as electron donors for organic bulk-heterojunction solar cells
B. Ananda Rao, K. Yesudas, G. Siva Kumar, K. Bhanuprakash, V. Jayathirtha Rao, G. D. Sharma and S. P. Singh  
Photochem. Photobiol. Sci., 2013,12, 1688-1699, DOI: 10.1039/C3PP50087J, Paper

The relative roles of DNA damage induced by UVA irradiation in human cells
Barbara Cortat, Camila Carrião Machado Garcia, Annabel Quinet, André Passaglia Schuch, Keronninn Moreno de Lima-Bessa and Carlos Frederico Martins Menck  
Photochem. Photobiol. Sci., 2013,12, 1483-1495, DOI: 10.1039/C3PP50023C, Paper

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

Take a look at the articles and then let us know your thoughts and comments below.

Fancy submitting your own work to Photochemical &  Photobiological Sciences? You can submit online today, or email us with your ideas and suggestions.

Issue 12 of Photochemical & Photobiological Sciences is now available to read online.

The front cover this month features work by Claire Richard and co-authors from Clermont-Ferrand, France. In their work they investigate the photolysis of cycloxydim (CD) in acetonitrile and water, and show that the intramolecular hydrogen bond in cycloxydim suppresses the photoisomerization and increases the reactivity through H abstraction of the iminyl radical.

Read the article in full – it’s free to access for the next six weeks:
Photolysis of cycloxydim, a cyclohexanedione oxime herbicide. Detection, characterization and reactivity of the iminyl radical
Shirin Monadjemi, Pascal de Sainte-Claire, Isabelle Abrunhosa-Thomas and Claire Richard  
Photochem. Photobiol. Sci., 2013, 12, 2067-2075, DOI: 10.1039/C3PP50209K

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Issue 11 of Photochemical & Photobiological Sciences is now available to read online.

The front cover this month features work by M. Manikandan and Hui-Fen Wu from Kaohsiung, Taiwan. In their work they look at the differential photoresponse of acridine orange (AO) with live and dead cancer cells in fluorescence spectroscopy.

Read the article in full – it’s free to access for the next six weeks:
Rapid differentiation and quantification of live/dead cancer cells using differential photochemical behavior of acridine orange
M. Manikandan and Hui-Fen Wu  
Photochem. Photobiol. Sci., 2013, 12, 1921-1926, DOI: 10.1039/C3PP50165E

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