Journal of Photochemistry and Photobiology最新文献_第9页

The UV Index color palette revisited 紫外线指数调色板重新审视

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-06-01 DOI: 10.1016/j.jpap.2023.100180

Eduardo Luccini , Facundo Orte , Julián Lell , Fernando Nollas , Gerardo Carbajal , Elián Wolfram

{"title":"The UV Index color palette revisited","authors":"Eduardo Luccini , Facundo Orte , Julián Lell , Fernando Nollas , Gerardo Carbajal , Elián Wolfram","doi":"10.1016/j.jpap.2023.100180","DOIUrl":"https://doi.org/10.1016/j.jpap.2023.100180","url":null,"abstract":"<div>The UV Index (UVI), standardized by the World Health Organization (WHO) in 2002, is an internationally accepted reference for disseminating information on solar UV radiation levels with the purpose of preventing the harmful effects on human health by sun overexposure. The UVI is the erythemal irradiance expressed in a dimensionless unit, with numerical values adapted to a risk scale that considers the “Extreme” level from a UVI value equal to 11 upwards. This scale is linked to a color palette by health risk ranges, and to a graded color palette by units of UVI for more details. Both the numerical scale and its associated risk levels were universally adopted by the scientific community and by global information systems to the population. However, inconsistencies and limitations persist between both UVI color palettes, making their interpretation and application difficult. In the present work all these aspects are addressed, proposing a revised color palette for unit UVI values that resolves each of them. Based on the WHO risk-ranges UVI color palette, the new color palette for unit UVI values gives coherence to both color charts, allowing reliable identification of the risk level bands and of each unit UVI level within them, and solves the need to distinguish between units for numerical values of UVI higher than 11 that are registered daily in many regions of the world.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"15 ","pages":"Article 100180"},"PeriodicalIF":3.261,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3143883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

2-Azafluorenone derivatives: Photocatalyst for oxygenation of toluene via electron transfer and hydrogen-atom transfer 2-氮杂芴酮衍生物:通过电子转移和氢原子转移进行甲苯氧化的光催化剂

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-06-01 DOI: 10.1016/j.jpap.2023.100184

Haruyasu Asahara , Yurie Horikawa , Kento Iwai , Nagatoshi Nishiwaki , Kei Ohkubo

{"title":"2-Azafluorenone derivatives: Photocatalyst for oxygenation of toluene via electron transfer and hydrogen-atom transfer","authors":"Haruyasu Asahara , Yurie Horikawa , Kento Iwai , Nagatoshi Nishiwaki , Kei Ohkubo","doi":"10.1016/j.jpap.2023.100184","DOIUrl":"https://doi.org/10.1016/j.jpap.2023.100184","url":null,"abstract":"<div>2-Aza-9-fluorenone derivatives were synthesized and their optical properties were investigated. The UV–visible absrption spectra revealed λmax values in the range of 350–380 nm, with a shift to the longer wavelength when an electron-donating group was substituted on the aryl group at the 3-position adjacent to the nitrogen in the azafluorenone. N-Methyl-2-azafluorenone was synthesized by methylating the nitrogen of azafluorenone. The N-methyl derivative was found to have a maximum absorption at 426 nm from UV-Vis spectral measurements, and electrochemical measurements revealed that it has a lower first reduction potential and higher electron-accepting ability than azafluorenone. In addition, the application of azafluorenone as a photocatalyst was investigated, focusing on its structural and electronic features. Oxidation of toluene with azafluorenone as a photocatalyst yielded benzoic acid in high yield. Electron-transfer dynamics analysis using nanosecond time-resolved laser flash photolysis suggests that azafluorenone and N-methylazafluorenone act as hydrogen transfer and electron transfer catalysts, respectively.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"15 ","pages":"Article 100184"},"PeriodicalIF":3.261,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3143884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photophysical and electrochemical properties of 9-naphthyl-3,6-diaminocarbazole derivatives and their application as photosensitizers 9-萘-3,6-二氨基咔唑衍生物的光物理和电化学性质及其作为光敏剂的应用

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-06-01 DOI: 10.1016/j.jpap.2023.100176

Ryosuke Matsubara , Huilong Kuang , Tatsushi Yabuta , Weibin Xie , Masahiko Hayashi , Eri Sakuda

引用次数: 1

Cell death mechanisms in retinal phototoxicity 视网膜光毒性的细胞死亡机制

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-06-01 DOI: 10.1016/j.jpap.2023.100185

Anaïs Françon, Alicia Torriglia

引用次数: 0

Titanium Dioxide Nanoparticles in sunscreens and skin photo-damage. Development, synthesis and characterization of a novel biocompatible alternative based on their in vitro and in vivo study 防晒霜中的二氧化钛纳米粒子和光损伤皮肤。基于体外和体内研究的新型生物相容性替代品的开发、合成和表征

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-06-01 DOI: 10.1016/j.jpap.2023.100173

M.Virginia Vaudagna , Virginia Aiassa , Aida Marcotti , María Fernanda Pince Beti , María Florencia Constantín , Mariela Fernanda Pérez , Ariana Zoppi , María Cecilia Becerra , M.Jazmin Silvero C․

{"title":"Titanium Dioxide Nanoparticles in sunscreens and skin photo-damage. Development, synthesis and characterization of a novel biocompatible alternative based on their in vitro and in vivo study","authors":"M.Virginia Vaudagna , Virginia Aiassa , Aida Marcotti , María Fernanda Pince Beti , María Florencia Constantín , Mariela Fernanda Pérez , Ariana Zoppi , María Cecilia Becerra , M.Jazmin Silvero C․","doi":"10.1016/j.jpap.2023.100173","DOIUrl":"https://doi.org/10.1016/j.jpap.2023.100173","url":null,"abstract":"<div>Titanium dioxide nanoparticles are widely used in cosmetics, especially in sunscreens due to their capacity to absorb UV harmful wavelengths. However, their biocompatibility remains controversial. In this work, the effect of titanium dioxide nanoparticles, particularly Degussa P25 (P25TiO2NPs) under solar-simulated radiation was studied in vitro and in vivo. Cell viability and tissue integrity were affected after exposure to P25TiO2NPs and light for 6 h, showing signs of significant oxidative stress markers and reduced tissue integrity observed by TEM. In order to avoid these undesired effects, a novel biocompatible alternative was presented based on titanium dioxide nanoparticle functionalization with vitamin B2 through a rapid sol-gel method. None of the phototoxicity effects were observed with these functionalized nanoparticles.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"15 ","pages":"Article 100173"},"PeriodicalIF":3.261,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3031865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-image-forming functional roles of OPN3, OPN4 and OPN5 photopigments OPN3、OPN4和OPN5光色素的非成像功能作用

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-06-01 DOI: 10.1016/j.jpap.2023.100177

Ramanujam Karthikeyan , Wayne I.L. Davies , Lena Gunhaga

{"title":"Non-image-forming functional roles of OPN3, OPN4 and OPN5 photopigments","authors":"Ramanujam Karthikeyan , Wayne I.L. Davies , Lena Gunhaga","doi":"10.1016/j.jpap.2023.100177","DOIUrl":"https://doi.org/10.1016/j.jpap.2023.100177","url":null,"abstract":"<div>Detecting different wavelengths and intensities of environmental light is crucial for the survival of many animals. In response, a multiplicity of opsins (a special group of photosensitive G protein-coupled receptors), when combined with a retinal chromophore, is able to directly detect light and initiate different downstream phototransduction signaling cascades. Although avian studies from the 1930s suggested the presence of deep brain photoreceptors that could respond to seasonal changes in the light/dark cycle, it was only a few decades ago that photopigments other than those found in the visual system (i.e. rods and cones) were identified as functional photoreceptors. It is now established that several classes of non-visual photoreceptors and the photopigments they express, in lower vertebrates to higher mammals alike, can regulate a plethora of mechanisms that function outside of vision. These include the synchronization of light/dark cycles with biological/cellular rhythms of the body (i.e. photoentrainment); melanogenesis in dermal tissues; thermoregulation in adipose tissue; embryonic eye development; smooth muscle relaxation; and the development of certain cancers. These and other mechanisms have been shown, in part at least, to be controlled by the expression of three important non-visual opsin genes, namely OPN3, OPN4 and OPN5, although other vertebrate opsin classes exist, many with unknown or unclear functional roles assigned to them presently. Specifically, these three opsins have been shown to be expressed during early embryogenesis and throughout adulthood, which will be discussed here. Moreover, this review highlights recent studies that focus on several key non-image-forming functional roles of OPN3, OPN4 and OPN5, and in particular those that impact photoreception in developing structures and pathways, as well as in adulthood.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"15 ","pages":"Article 100177"},"PeriodicalIF":3.261,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3272688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrodeposited NiFe2O4/Cu2O heterostructure thin films with enhanced photocurrent generation 电沉积NiFe2O4/Cu2O异质结构薄膜，增强光电流产生

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-06-01 DOI: 10.1016/j.jpap.2023.100181

Samba Siva Vadla , Sruthi Guru , Tripta Parida , Subish John , Somnath C. Roy , G. Ranga Rao

{"title":"Electrodeposited NiFe2O4/Cu2O heterostructure thin films with enhanced photocurrent generation","authors":"Samba Siva Vadla , Sruthi Guru , Tripta Parida , Subish John , Somnath C. Roy , G. Ranga Rao","doi":"10.1016/j.jpap.2023.100181","DOIUrl":"https://doi.org/10.1016/j.jpap.2023.100181","url":null,"abstract":"<div>In comparison with single-phase materials, heterostructures have been known for superior water splitting applications. In this study, Cu2O and NiFe2O4 are chosen to fabricate thin film heterostructures. Cu2O is electrodeposited at 60 °C for 5 min on ITO-coated glass substrates using three-electrode system. After deposition, the phase formation is confirmed using powder x-ray diffraction studies. The NiFe2O4 (NFO) thin films are deposited using RF sputtering method at room temperature for 2 h on Cu2O/ITO substrates to obtain NFO/Cu2O/ITO Type-II heterostructure. The scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) cross-sectional images show that the thickness of NFO layer is 120 nm and Cu2O layer is 1.5 µm. The photocurrent density of Cu2O on ITO is 0.08 ± 0.002 mA/cm2, and it increased to 0.12 ± 0.002 mA/cm2 after adding NFO layer on Cu2O film due to Type-II heterojunction formation.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"15 ","pages":"Article 100181"},"PeriodicalIF":3.261,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3457201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The combination of violet light and infra-red as well as violet light only effectively suppress the survival of multiple-drug resistant bacteria 紫光与红外线联合使用以及紫光仅能有效抑制多重耐药菌的存活

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-04-01 DOI: 10.1016/j.jpap.2023.100167

Areli Martinez , Karina Hernandez-Quijada , Anurupa A. Ghosh , Gabriela Cabrera , Derrick Scott , Anthea Aikins , Dinesh K. Verma , Igsoo Kwon , Yong-Hwan Kim

{"title":"The combination of violet light and infra-red as well as violet light only effectively suppress the survival of multiple-drug resistant bacteria","authors":"Areli Martinez , Karina Hernandez-Quijada , Anurupa A. Ghosh , Gabriela Cabrera , Derrick Scott , Anthea Aikins , Dinesh K. Verma , Igsoo Kwon , Yong-Hwan Kim","doi":"10.1016/j.jpap.2023.100167","DOIUrl":"https://doi.org/10.1016/j.jpap.2023.100167","url":null,"abstract":"<div>Since recent global pandemic started, there has been a high demand for establishing an inexpensive but effective method to interfere with the spread of infectious diseases. Here, we have tested several combinations of violet light (V, 405 nm) with infra-red (IR, 850 nm) to identify an optimal light for suppressing pathogens. Our results demonstrate that both violet only (4 V) and 3V-1IR (3:1 ratio in combination of violet and infra-red) effectively suppressed all the bacterial growth tested, including Gram-negative and -positive multi-drug resistant (MDR) strains. Both 4 V and 3V-1IR equally terminated standard strains of Escherichia coli and Staphylococcus aureus, as well as MDR-strains (E. coli, Salmonella enterica and S. aureus from ATCC) effectively. In mechanism, the violet light enhanced the level of reactive oxygen species (ROS) for bactericidal effects, however, we have observed a slightly higher potency from 3V-1IR at a shorter distance, probably due to mild heat-derived dehydration by IR. Therefore, we suggest to expose 3V-1IR for short distance applications (≤1 meter) and both 4 V and 3V-1IR for longer distance (≥1 m). Notably, our results strongly suggest that the exposure of safe violet light or with infra-red can be an effective method to suppress the potential spread of bacteria-derived infectious diseases.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"14 ","pages":"Article 100167"},"PeriodicalIF":3.261,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3143885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Visible light-driven photocatalytic benzoyl azides formation from benzotrichlorides using rhodium ion modified TiO2 铑离子修饰TiO2在可见光下催化苯并三氯化物生成苯甲酰叠氮化物

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-04-01 DOI: 10.1016/j.jpap.2023.100170

Keita Shichijo, Hisashi Shimakoshi

{"title":"Visible light-driven photocatalytic benzoyl azides formation from benzotrichlorides using rhodium ion modified TiO2","authors":"Keita Shichijo, Hisashi Shimakoshi","doi":"10.1016/j.jpap.2023.100170","DOIUrl":"https://doi.org/10.1016/j.jpap.2023.100170","url":null,"abstract":"<div>Visible light-driven benzoyl azides formation catalyzed by a rhodium ion modified TiO2 (Rh3+/TiO2) is reported. The Rh3+/TiO2 was prepared as a visible light responsive photocatalyst by a simple procedure from TiO2 and RhCl3･3H2O. The Rh3+/TiO2 exhibited a broaden visible light absorption from 400 nm to 600 nm. Benzoyl azide formation from a benzotrichloride and a trimethylsilyl azide (TMS-N3) was performed catalyzed by the Rh3+/TiO2 under visible light irradiation (λ ≥ 420 nm) in air at room temperature. In this reaction, the benzotrichloride was effectively reduced by the single electron transfer (SET) from the Rh3+/TiO2, and the benzoyl azide was produced in 71% yield via the reaction between the benzoyl chloride and TMS-N3. In addition, several benzotrichloride derivatives were applied to this reaction and the corresponding benzoyl azide derivatives were formed in up to 71% yield. A kinetic analysis was also performed on these reactions, and it was suggested that the SET is the rate determining step in this reaction.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"14 ","pages":"Article 100170"},"PeriodicalIF":3.261,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3457205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Use of liquid-core waveguides as photochemical reactors and/or for chemical analysis – An overview 液芯波导作为光化学反应器和/或化学分析的应用。概述

IF 3.261

Journal of Photochemistry and Photobiology Pub Date : 2023-04-01 DOI: 10.1016/j.jpap.2023.100168

Iris Groeneveld , Amber Jaspars , Imran B. Akca , Govert W. Somsen , Freek Ariese , Maarten R. van Bommel

{"title":"Use of liquid-core waveguides as photochemical reactors and/or for chemical analysis – An overview","authors":"Iris Groeneveld , Amber Jaspars , Imran B. Akca , Govert W. Somsen , Freek Ariese , Maarten R. van Bommel","doi":"10.1016/j.jpap.2023.100168","DOIUrl":"https://doi.org/10.1016/j.jpap.2023.100168","url":null,"abstract":"<div>The study of photochemical reactions is of great importance in many fields including the pharmaceutical, food, and paint industry. Most of these photochemical processes are being studied to better understand how to apply them for a specific purpose or how unwanted effects can be prevented. Advances are still being made in photoreactor design, where in-situ detection of the involved reagents and products is an important development. Liquid-core waveguides (LCWs) allow simultaneous illumination and optical assessment of liquid samples and, therefore, constitute one way of combining photoreactor design with on-line or in-situ analytical detection methods. LCWs possess several interesting characteristics, such as low light loss, increased optical path length, and possibilities for coupling with spectroscopic techniques. The current review discusses the state-of-the-art of LCWs applied as photoreactors, for analytical detection, and their combinations. We discuss the differences between several total internal reflection (TIR)-based LCWs, including polymer and polymer-coated capillaries, and silica aerogels, and interference-based waveguides, including Bragg fibers, holey fibers, Kagomé fibers and anti-resonance reflecting optical waveguides (ARROWs). Assessed characteristics include the (freedom of) design, the degree of light attenuation, the range of transmittable wavelengths, gas permeability, compatibility with analytical techniques, current challenges, and applications.</div>","PeriodicalId":375,"journal":{"name":"Journal of Photochemistry and Photobiology","volume":"14 ","pages":"Article 100168"},"PeriodicalIF":3.261,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3457204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1