Photochemistry and Photobiology

Cover image for Vol. 92 Issue 4

July/August 2016

Volume 92, Issue 4

Pages 509–648

  1. Issue Information

    1. Top of page
    2. Issue Information
    3. Editorial
    4. Highlight Article (Invited)
    5. Research Articles
    6. Research Note
    1. Issue Information (pages 509–510)

      Version of Record online: 26 JUL 2016 | DOI: 10.1111/php.12516

  2. Editorial

    1. Top of page
    2. Issue Information
    3. Editorial
    4. Highlight Article (Invited)
    5. Research Articles
    6. Research Note
    1. Editorial (page 511)

      Jean Cadet

      Version of Record online: 26 JUL 2016 | DOI: 10.1111/php.12611

  3. Highlight Article (Invited)

    1. Top of page
    2. Issue Information
    3. Editorial
    4. Highlight Article (Invited)
    5. Research Articles
    6. Research Note
  4. Research Articles

    1. Top of page
    2. Issue Information
    3. Editorial
    4. Highlight Article (Invited)
    5. Research Articles
    6. Research Note
    1. Coaxial Electrospinning Method for the Preparation of TiO2@CdS/PVA Composite Nanofiber Mat and Investigation on its Photodegradation Catalysis (pages 515–522)

      Yanmei Luo, Yiru Jia, Dexian Zhang and Xinjian Cheng

      Version of Record online: 18 MAY 2016 | DOI: 10.1111/php.12591

      Thumbnail image of graphical abstract

      A TiO2/PVA composite nanofiber mat was prepared first, and then the mat was immersed in Cd2+ and S2− solutions to obtain a TiO2@CdS/PVA composite nanofiber mat. The as-prepared mat exhibited excellent photodegradation ability for a model dye, methylene blue.

    2. Synthesis of TiO2/CNT Composites and its Photocatalytic Activity Toward Sudan (I) Degradation (pages 523–527)

      Amat Miribangul, Xiaoli Ma, Chen Zeng, Huan Zou, Yahui Wu, Tengpeng Fan and Zhi Su

      Version of Record online: 26 JUL 2016 | DOI: 10.1111/php.12604

      Thumbnail image of graphical abstract

      The Sudan (I) peak at 2345 nm−1 disappeared in all the irradiated samples, indicating the fast degradation of –N=N. This led to changes in the conjugate structure of Sudan (I), causing the absorption peaks of benzene and -CH functional groups blue-shifted to the 1525, 1457, 1389, 1330 nm−1 and 669 nm−1, respectively. The spectra confirmed that Sudan (I) was effectively degraded by the catalyst.

    3. Influence of Donor on the Sensing Performance of a Series of Through-Bond Energy Transfer-Based Two-photon Fluorescent Cu2+ Probes (pages 528–536)

      Yu-Jin Zhang, Xin Wang, Yong Zhou and Chuan-Kui Wang

      Version of Record online: 29 JUN 2016 | DOI: 10.1111/php.12597

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      Two-photon fluorescent probe is regarded as an excellent tool of sensing various detected subjects. Sensing performances of two typical two-photon fluorescent probes based on through-bond energy transfer are validated theoretically and two more probes are designed to investigate the donor effect. Analysis of molecular orbitals is presented to explore responsive mechanism of the probes.

    4. Chemiexcitation Efficiency of Intermolecular Electron-transfer Catalyzed Peroxide Decomposition Shows Low Sensitivity to Solvent-cavity Effects (pages 537–545)

      Muhammad Khalid, Sergio P. de Souza Jr., Fernando H. Bartoloni, Felipe A. Augusto and Wilhelm J. Baader

      Version of Record online: 6 JUN 2016 | DOI: 10.1111/php.12599

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      The low quantum yields determined in the rubrene and perylene catalyzed decomposition of diphenoyl peroxide and spiro-adamantyl-1,2-dioxetanone are not subject to significant solvent cavity effects in binary ethyl acetate/dibutyl phthalate mixtures, indicating that the low efficiency is not due to solvent cavity escape of intermediate radical pairs but might be caused by steric effects on the interaction between the peroxide and the catalyst.

    5. Peroxyoxalate High-Energy Intermediate is Efficiently Decomposed by the Catalyst Imidazole (pages 546–551)

      Andreia Boaro and Fernando Heering Bartoloni

      Version of Record online: 26 JUL 2016 | DOI: 10.1111/php.12608

      Thumbnail image of graphical abstract

      When the high-energy intermediate (HEI) of the light-emitting peroxyoxalate reaction is generated in the presence of imidazole and an activator (i.e. 9,10-diphenylanthracene), with both at the same concentration, up to 78% of this intermediate is actually consumed by a bimolecular imidazole-catalyzed dark decomposition pathway. This HEI is generated based on the reaction between an aryl oxalate ester with H2O2 and, paradoxically, imidazole is known to be the best basic/nucleophilic catalyst available for such reaction.

    6. Vibrationally Resolved Absorption and Fluorescence Spectra of Firefly Luciferin: A Theoretical Simulation in the Gas Phase and in Solution (pages 552–560)

      Yuan-Yuan Cheng and Ya-Jun Liu

      Version of Record online: 8 JUN 2016 | DOI: 10.1111/php.12601

      Thumbnail image of graphical abstract

      This figure shows the simulated absorption and fluorescence spectra of phenolate-carboxylate ion of firefly luciferin in water. They are generally a mirror image of each other. Moreover, the 0–0 band position is also shown.

    7. Proteomic and Physiological Studies Provide Insight into Photosynthetic Response of Rice (Oryza sativa L.) Seedlings to Microgravity (pages 561–570)

      Boya Chen and Yingping Wang

      Version of Record online: 6 JUN 2016 | DOI: 10.1111/php.12593

      Thumbnail image of graphical abstract

      Shenzhou-8 spaceship was launched for a 17-day unmanned mission with a Long March rocket from the Jiuquan Satellite Launch Center. SIMBOX situated on Shenzhou-8 contained 17 biomedical experiments from both Chinese and German researchers. Our group contributed rice seedlings, investigating the role of microgravity on rice seedlings for further studies on photosynthetic physiology and proteomics. Our results indicate that microgravity condition causes reduction in photosystem I (PSI) activity in rice seedlings; and some side effects of the spaceflight conditions seem to have negative effects on PSI.

    8. Selective Photoreceptor Gene Knock-out Reveals a Regulatory Role for the Growth Behavior of Pseudomonas syringae (pages 571–578)

      Rashmi Shah, Gopal Pathak, Thomas Drepper and Wolfgang Gärtner

      Version of Record online: 26 JUL 2016 | DOI: 10.1111/php.12610

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      The plant-pathogenic bacterium Pseudomonas syringae expresses three photoreceptors: one flavin-binding BL-sensing LOV-domain protein and two bilin-binding red-/far red-sensing bacterial phytochromes. All three photoreceptors communicate their biological signal via classical two-component systems composed of histidine kinases and response regulators. Stepwise single and multiple photoreceptor gene knock-out identifies important regulatory functions of light. Active photoreceptors in P. syringae keep tissue damage of plant leaves upon infection at a moderate level, whereas gene knock-out increases virulence. In addition, mutant cells with deleted phytochrome genes show either increased growth (Δphy1) or highly altered dendritic swarming behavior (Δphy2, Figure).

    9. Regulation of Black Pepper Inflorescence Quantity by Shading at Different Growth Stages (pages 579–586)

      Chao Zu, Guiping Wu, Zhigang Li, Jianfeng Yang, Can Wang, Huan Yu and Huasong Wu

      Version of Record online: 8 JUN 2016 | DOI: 10.1111/php.12600

      Thumbnail image of graphical abstract

      We examined the effect of duration of shading on pepper yield and quality. An appropriate shading measure could regulate inflorescence quantity.

    10. Relative Contributions of UVB and UVA to the Photoconversion of (6-4) Photoproducts into their Dewar Valence Isomers (pages 587–594)

      Thierry Douki

      Version of Record online: 26 JUL 2016 | DOI: 10.1111/php.12605

      Thumbnail image of graphical abstract

      The formation of Dewar isomers in DNA is efficient upon exposure to combinations of UVA and UVB. In contrast, UVB alone is not efficient at inducing the photoisomerization of (6-4) photoproducts while pure UVA does not induce the latter class of damage.

    11. Melatonin Mediates Monochromatic Light-induced Insulin-like Growth Factor 1 Secretion of Chick Liver: Involvement of Membrane Receptors (pages 595–603)

      Suqi Li, Jing Cao, Zixu Wang, Yulan Dong, Wenli Wang and Yaoxing Chen

      Version of Record online: 6 JUN 2016 | DOI: 10.1111/php.12594

      Thumbnail image of graphical abstract

      Monochromatic light affects the secretion of avian melatonin by acting on the pineal through the cranium. Melatonin influence the secretion of insulin-like growth factor 1 in hepatocyte through the membrane receptor pathway.

    12. Angelica archangelia Prevented Collagen Degradation by Blocking Production of Matrix Metalloproteinases in UVB-exposed Dermal Fibroblasts (pages 604–610)

      Zhengwang Sun, Eunson Hwang, Sang Yong Park, Mengyang Zhang, Wei Gao, Pei Lin and Tae-Hoo Yi

      Version of Record online: 3 JUN 2016 | DOI: 10.1111/php.12595

      Thumbnail image of graphical abstract

      Solar ultraviolet radiation is mainly responsible for photoaging. UV-induced radical oxygen species (ROS) increase matrix metalloproteinase (MMPs) expression, which degrades collagen in the extracellular matrix (ECM). Angelica archangelia (AA) extract inhibited UVB-induced MMPs expression by inhibiting mitogen-activated protein kinase (MAPK) signaling pathways and activator protein-1 (AP-1) activation. Our results suggest that AA is a promising botanical agent for use against skin photoaging.

    13. Albumin–Folate Conjugates for Drug-targeting in Photodynamic Therapy (pages 611–619)

      Kathrin Butzbach, Federico A.O. Rasse-Suriani, M. Micaela Gonzalez, Franco M. Cabrerizo and Bernd Epe

      Version of Record online: 7 JUL 2016 | DOI: 10.1111/php.12602

      Thumbnail image of graphical abstract

      Folate-tagged albumin mediates the endocytotic uptake of covalently attached photosensitizer molecules (cHa) into target cells (tumor cells), which thereby become photosensitive. The cytotoxicity of the particles totally depends on (1) the presence of the folate receptors (FRα) on the target cells and (2) the subsequent irradiation with light.

    14. Promotion of Proapoptotic Signals by Lysosomal Photodamage: Mechanistic Aspects and Influence of Autophagy (pages 620–623)

      David Kessel and Conor L. Evans

      Version of Record online: 18 MAY 2016 | DOI: 10.1111/php.12592

      Thumbnail image of graphical abstract

      Scheme whereby release of calcium from photodamaged lysosomes activates calpain. This enzyme then catalyzes activation of calpain. This enzyme then cleaves the autophagy-associated protein ATG5 to a truncated form that potentiates the initiation of apoptotic death after a subsequent PDT dose directed at mitochondria. The net result is substantially enhanced photokilling that can circumvent suboptimal delivery of light and oxygen.

    15. Red Light Treatment in an Axotomy Model of Neurodegeneration (pages 624–631)

      Kathy Beirne, Malgorzata Rozanowska and Marcela Votruba

      Version of Record online: 26 JUL 2016 | DOI: 10.1111/php.12606

      Thumbnail image of graphical abstract

      Red light has been shown to provide neuroprotective effects. Axotomizing the optic nerve initiates retinal ganglion cell (RGC) degeneration, and an early marker of this is dendropathy. We demonstrate the ability of 670 nm light to partially prevent ex vivo dendropathy in the mouse retina. The area under the Sholl curve, the peak of the Sholl curve, dendritic length and dendritic field area showed statistically significant reductions after 16 h by 40.56% (< 0.008), 33.9% (< 0.007), 45.43% (< 0.006) and 44.23% (< 0.019), respectively, in sham-treated retinae. Such statistically significant reductions were not seen in red light-treated retinae.

    16. Diffuse Reflectance Spectroscopy Versus Mexameter® MX18 Measurements of Melanin and Erythema in an African Population (pages 632–636)

      Caradee Y. Wright, Aletta E. Karsten, Marcus Wilkes, Ann Singh, Johan du Plessis, Patricia N. Albers and Petrus A. Karsten

      Version of Record online: 26 JUL 2016 | DOI: 10.1111/php.12607

      Thumbnail image of graphical abstract

      Melanin provides protection against excess sun exposure. Diffuse Reflectance Spectroscopy (DRS) is used to calculate melanin and erythema, but has mostly been used for light-to-medium pigmented skin. We compared DRS-calculated melanin and erythema values with a handheld reflectance Mexameter melanin and erythema values to understand how these techniques/measurements correlate among Africans with predominantly deeply pigmented skin. DRS-calculated and Mexameter melanin values demonstrated a positive correlation. Both instruments' results showed that erythema values were strongly correlated with their own melanin values. Further work is needed to understand melanin, erythema and color in Black skin, given sun-related health risks posing vulnerable groups in Africa.

    17. Problems on the Evaluation of the Critical Wavelength of Sunscreens for “Broad Spectrum” Approval Brought on by Viscous Fingering During Sunscreen Application (pages 637–643)

      Misaki Wakabayashi, Kunihiko Okano, Tsubasa Mukawa, Daisuke Maezawa, Hitoshi Masaki, Akihiro Kuroda and Kouichi Asakura

      Version of Record online: 7 JUN 2016 | DOI: 10.1111/php.12598

      Thumbnail image of graphical abstract

      Pseudosunscreen solutions were prepared and applied on a flat quartz plate. A spatially periodic stripe pattern was always formed on the pseudosunscreen layer when a block applicator was used. UV absorbance of the patterned layer was lower than that of the flat layer having the same average thickness. Larger decrease in the UV absorbance by the pattern formation was observed at wavelength at which the UV absorbance of the flat layer was large to change the critical wavelength for “Broad Spectrum” approval.

  5. Research Note

    1. Top of page
    2. Issue Information
    3. Editorial
    4. Highlight Article (Invited)
    5. Research Articles
    6. Research Note
    1. Efficient Degradation of Aqueous Rhodamine B Irradiation Under Indoor Light Using a SiO2–Hypocrellin B Complex (pages 644–648)

      Jucheng Zhang, Heping Yan, Yashun Chen, Rui Chen, Ying He and Wei Liu

      Version of Record online: 6 JUN 2016 | DOI: 10.1111/php.12596

      Thumbnail image of graphical abstract

      The natural photosensitizer hypocrellin B (HB) was used to prepare a SiO2–HB catalyst to degrade wastewater by an impregnation method. The results demonstrate that the SiO2–HB complex is capable of rapidly degrading Rhodamine B (RhB) at room temperature and ambient atmospheric pressure in aqueous solutions with wide pH values ranging from 1 to 10, and under indoor light. And the SiO2–HB complex appears to be an efficient catalyst for the degradation of the model dye RhB in wastewater and can be separated easily.

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