Photochemical & Photobiological Sciences最新文献_第5页

Antibacterial effect of new photocatalytically active "complex oxides/PMMA" composites under visible-light irradiation. 新型光催化活性“复合氧化物/PMMA”复合材料在可见光照射下的抗菌效果。

IF 2.7 3区化学

Photochemical & Photobiological Sciences Pub Date : 2024-12-01 Epub Date: 2024-11-29 DOI: 10.1007/s43630-024-00664-w

Andrey Yu Shishkin, Diana G Fukina, Victoria O Rumyantseva, Elena V Shilova, Alexander S Ganov, Irina A Shalaginova, Pavel V Kornienko, Evgeny V Suleimanov, Ludmila L Semenycheva, Vasily F Smirnov

{"title":"Antibacterial effect of new photocatalytically active \"complex oxides/PMMA\" composites under visible-light irradiation.","authors":"Andrey Yu Shishkin, Diana G Fukina, Victoria O Rumyantseva, Elena V Shilova, Alexander S Ganov, Irina A Shalaginova, Pavel V Kornienko, Evgeny V Suleimanov, Ludmila L Semenycheva, Vasily F Smirnov","doi":"10.1007/s43630-024-00664-w","DOIUrl":"10.1007/s43630-024-00664-w","url":null,"abstract":"New photocatalytic materials based on complex oxides and a widely used and cheap polymer (PMMA) have been prepared. Among complex oxides previously investigated, the following have been used-RbTe1.5W0.5O6, CsTeMoO6, CsV0.625Te1.375O6, NaVMoO6, KVMoO6. For comparison, the binary oxides TiO2 and WO3 were used. The form of PMMA matrix was used as sponge and glass. The amount of powder in PMMA was selected based on retaining the polymer properties and getting the photocatalytic activity, which corresponds to 1% powder in sponge and 0.5% in glass. The \"photocatalyst/PMMA\" composites decompose the methylene blue under visible and UV light as well as possess antibacterial properties. The high electron-hole recombination was found out for composites photocatalysts, which significantly influences only on organic compounds decomposition in solutions. However, there is no direct dependence between effective photodegradation of simple organic molecules and antimicrobial properties. Inactivation of bacteria is determined by many factors such as active generated radicals, adsorption properties of the surface and the photocatalyst form, which can change the main active radicals. The comparison of photocatalytic action on organic solutions and bacteria of initial powders and PMMA composites allow choosing the most effective combination for further application. The most promising antimicrobial properties for composites have been obtained using compounds with β-pyrochlore structure.","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":" ","pages":"2237-2253"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-aggregation of 13²,13²-disubstituted bacteriochlorophyll-d analog. 132,132-二取代细菌叶绿素-d 类似物的自聚集。

IF 2.7 3区化学

Photochemical & Photobiological Sciences Pub Date : 2024-12-01 Epub Date: 2024-11-27 DOI: 10.1007/s43630-024-00662-y

Yamato Hashimoto, Toyoho Takeda, Shin Ogasawara, Hitoshi Tamiaki

引用次数: 0

On the application of nanosecond laser flash photolysis to the investigation of the photoreactivity of di and triarylamines. 纳秒激光闪光光解在二胺和三芳胺光反应性研究中的应用。

IF 2.7 3区化学

Photochemical & Photobiological Sciences Pub Date : 2024-12-01 Epub Date: 2024-12-05 DOI: 10.1007/s43630-024-00661-z

Sergio M Bonesi, Stefano Protti

引用次数: 0

OLUFF: a novel set of ground and excited state force field parameters of the emitting oxyluciferin species. OLUFF：一套新的发射型氧荧光素的基态和激发态力场参数。

IF 2.7 3区化学

Photochemical & Photobiological Sciences Pub Date : 2024-12-01 Epub Date: 2024-11-13 DOI: 10.1007/s43630-024-00654-y

Henar Mateo-delaFuente, Juan J Nogueira

引用次数: 0

IF 2.7 3区化学

Photochemical & Photobiological Sciences Pub Date : 2024-12-01 Epub Date: 2024-11-22 DOI: 10.1007/s43630-024-00648-w

Kizashi Yamaguchi, Koichi Miyagawa, Mitsuo Shoji, Hiroshi Isobe, Takashi Kawakami

{"title":"Similarity between oxygen evolution in photosystem II and oxygen reduction in cytochrome c oxidase via proton coupled electron transfers. A unified view of the oxygenic life from four electron oxidation-reduction reactions.","authors":"Kizashi Yamaguchi, Koichi Miyagawa, Mitsuo Shoji, Hiroshi Isobe, Takashi Kawakami","doi":"10.1007/s43630-024-00648-w","DOIUrl":"10.1007/s43630-024-00648-w","url":null,"abstract":"Basic concepts and theoretical foundations of broken symmetry (BS) and post BS methods for strongly correlated electron systems (SCES) such as electron-transfer (ET) diradical, multi-center polyradicals with spin frustration are described systematically to elucidate structures, bonding and reactivity of the high-valent transition metal oxo bonds in metalloenzymes: photosystem II (PSII) and cytochrome c oxidase (CcO). BS hybrid DFT (HDFT) and DLPNO coupled-cluster (CC) SD(T0) computations are performed to elucidate electronic and spin states of CaMn4Ox cluster in the key step for oxygen evolution, namely S4 [S3 with Mn(IV) = O + Tyr161-O radical] state of PSII and PM [Fe(IV) = O + HO-Cu(II) + Tyr161-O radical] step for oxygen reduction in CcO. The cycle of water oxidation catalyzed by the CaMn4Ox cluster in PSII and the cycle of oxygen reduction catalyzed by the CuA-Fea-Fea3-CuB cluster in CcO are examined on the theoretical grounds, elucidating similar concerted and/or stepwise proton transfer coupled electron transfer (PT-ET) processes for the four-electron oxidation in PSII and four-electron reduction in CcO. Interplay between theory and experiments have revealed that three electrons in the metal sites and one electron in tyrosine radical site are characteristic for PT-ET in these biological redox reaction systems, indicating no necessity of harmful Mn(V) = O and Fe(V) = O bonds with strong oxyl-radical character. Implications of the computational results are discussed in relation to design of artificial systems consisted of earth abundant transition metals for water oxidation.","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":" ","pages":"2133-2155"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142685418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Detection of pesticide residues using flower-like silver SERS substrates based on flexible sponge. 基于柔性海绵的花状银SERS基底检测农药残留。

IF 2.7 3区化学

Photochemical & Photobiological Sciences Pub Date : 2024-12-01 Epub Date: 2024-11-29 DOI: 10.1007/s43630-024-00660-0

Chao Sun, Niansong Liu, Zhongxu Wu, Lizheng Wang, Jianjun Ding

{"title":"Detection of pesticide residues using flower-like silver SERS substrates based on flexible sponge.","authors":"Chao Sun, Niansong Liu, Zhongxu Wu, Lizheng Wang, Jianjun Ding","doi":"10.1007/s43630-024-00660-0","DOIUrl":"10.1007/s43630-024-00660-0","url":null,"abstract":"In response to the existing issues of cumbersome and time-consuming detection processes and limited application scope in current pesticide residue detection, this paper designed a novel flexible substrate for surface-enhanced Raman spectroscopy (SERS) by combining flower-like silver nanoparticles prepared by chemical reduction technology with a flexible sponge. The flexible substrate exhibits excellent SERS enhancement effects, with a minimum detection limit of 10-12 mol/L for the probe molecule rhodamine 6G (R6G) and an average enhancement factor of 6.63 × 105. For the commonly used pesticide thiram, the minimum detection limit is 0.1 mg/L, which is significantly lower than the maximum residue limits set by China and the USA for thiram. Further experiments confirmed the substrate's excellent uniformity and stability, and the use of finite difference time domain (FDTD) software revealed that the model combining flower-like silver nanoparticles with a sponge exhibited higher electromagnetic field intensity compared to the model without the sponge, resulting in abundant \"hot spots\". Additionally, the sparrow search algorithm (SSA) was used to optimize the backpropagation (BP) neural network for predicting the concentration of thiram pesticide. The experimental results indicated that the SSA-BP algorithm achieved a determination coefficient (R2) of 0.99974 and root mean square error (RMSE) of 300.321, demonstrating good network performance and meeting the requirements of actual detection needs.","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":" ","pages":"2211-2226"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Potentiation of antimicrobial photodynamic therapy with potassium iodide and methylene blue: targeting oral biofilm viability. 用碘化钾和亚甲基蓝增强抗菌光动力疗法：靶向口腔生物膜活力。

IF 2.7 3区化学

Photochemical & Photobiological Sciences Pub Date : 2024-12-01 Epub Date: 2024-12-04 DOI: 10.1007/s43630-024-00666-8

Felipe Fabrício Farias-da-Silva, Juliana Benine-Warlet, Francisco Carlos Groppo, Carolina Steiner-Oliveira

{"title":"Potentiation of antimicrobial photodynamic therapy with potassium iodide and methylene blue: targeting oral biofilm viability.","authors":"Felipe Fabrício Farias-da-Silva, Juliana Benine-Warlet, Francisco Carlos Groppo, Carolina Steiner-Oliveira","doi":"10.1007/s43630-024-00666-8","DOIUrl":"10.1007/s43630-024-00666-8","url":null,"abstract":"The study aimed to assess the impact of combining potassium iodide (KI) with methylene blue (MB) in antimicrobial photodynamic therapy (aPDT) within an oral biofilm formed in situ. A single-phase, 14 days in situ study involved 21 volunteers, who wore a palatal appliance with 8 bovine dentin slabs. These slabs were exposed to a 20% sucrose solution 8 times a day, simulating a high cariogenic challenge. Following the intraoral phase, the biofilms formed on the slabs were randomly assigned to the treatments: C (0.9% NaCl); CHX (0.2% chlorhexidine); KI (75 mM KI); MBKI (0.005% MB + 75 mM KI); L (0.9% NaCl + red laser 660 nm, 18 J, 180 s); LMB (0.005% MB + laser); LKI (75 mM KI + laser); LMBKI (0.005% MB + 75 mM KI + laser). The treated biofilms were collected, diluted, and incubated to assess cell viability (CFU/mL) for total microorganisms, total lactobacilli, total streptococci, and mutans streptococci. Data were subjected to analysis using the Friedman test, followed by the Dunn test (α = 0.05). LMBKI group exhibited a noteworthy decrease in the viability of all microorganisms in comparison to groups C, KI, MBKI, MB, L, LMB, and LKI (p < 0.0001), and demonstrated a comparable reduction to the CHX group (p > 0.99). The combination of KI with MB in aPDT may be advocated as a non-invasive technique for diminishing the viability of polymicrobial oral biofilms, thereby aiding in the management of dental diseases.","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":" ","pages":"2255-2263"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Increasing solar UV radiation in Dortmund, Germany: data and trend analyses and comparison to Uccle, Belgium. 德国多特蒙德不断增加的太阳紫外线辐射：数据和趋势分析以及与比利时乌克勒的比较。

IF 2.7 3区化学

Photochemical & Photobiological Sciences Pub Date : 2024-12-01 Epub Date: 2024-11-24 DOI: 10.1007/s43630-024-00658-8

Sebastian Lorenz, Felix Heinzl, Stefan Bauer, Marco Janßen, Veerle De Bock, Alexander Mangold, Peter Scholz-Kreisel, Daniela Weiskopf

{"title":"Increasing solar UV radiation in Dortmund, Germany: data and trend analyses and comparison to Uccle, Belgium.","authors":"Sebastian Lorenz, Felix Heinzl, Stefan Bauer, Marco Janßen, Veerle De Bock, Alexander Mangold, Peter Scholz-Kreisel, Daniela Weiskopf","doi":"10.1007/s43630-024-00658-8","DOIUrl":"10.1007/s43630-024-00658-8","url":null,"abstract":"Increasing solar ultraviolet radiation (UVR) can raise human exposure to UVR and adversely affect the environment. Precise measurements of ground-level solar UVR and long-term data series are crucial for evaluating time trends in UVR. This study focuses on spectrally resolved data from a UVR measuring station in Dortmund, Germany (51.5° N, 7.5° E, 130 m a.s.l.). After a strict quality assessment, UV data, such as the daily maximum UV Index (UVImax) and daily erythemal radiant exposure (Her,day) values, were analyzed concerning monthly and annual distribution, frequency, occurrence of highest values and their influencing factors. An advanced linear trend model with a flexible covariance matrix was utilized and applied to monthly mean values. Missing values were estimated by a validated imputation method. Findings were compared to those from a station in Uccle, Belgium (50.8° N, 4.3° E, 100 m a.s.l.). Parameters possibly influencing trends in both UVR and global radiation, such as ozone and sunshine duration, were additionally evaluated. The 1997-2022 trend results show a statistically significant increase in monthly mean of Her,day (4.9% p. decade) and UVImax (3.2% p. decade) in Dortmund and Her,day (7.5% p. decade) and UVImax (5.8% p. decade) in Uccle. Total column ozone shows a slight decrease in the summer months. Global radiation increases similarly to the UV data, and sunshine duration in Dortmund increases about twice as much as global radiation, suggesting a strong influence of change in cloud cover. To address health-related consequences effectively, future adaptation and prevention strategies to climate change must consider the observed trends.","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":" ","pages":"2173-2199"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142708562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dimly illuminated nights alter behavior and negatively affect fat metabolism in adult male zebra finches. 昏暗的夜晚会改变成年雄性斑马雀的行为，并对其脂肪代谢产生负面影响。

IF 2.7 3区化学

Photochemical & Photobiological Sciences Pub Date : 2024-12-01 Epub Date: 2024-11-15 DOI: 10.1007/s43630-024-00659-7

Mayank Kumar, Ashwani Kumar, Vatsala Tripathi, Abhilash Prabhat, Sanjay Kumar Bhardwaj

{"title":"Dimly illuminated nights alter behavior and negatively affect fat metabolism in adult male zebra finches.","authors":"Mayank Kumar, Ashwani Kumar, Vatsala Tripathi, Abhilash Prabhat, Sanjay Kumar Bhardwaj","doi":"10.1007/s43630-024-00659-7","DOIUrl":"10.1007/s43630-024-00659-7","url":null,"abstract":"This experiment investigated the effects of an ecologically relevant level of dim light at night (dLAN) on behavior, physiology and fat metabolism associated gene expressions in central and peripheral tissues of adult male zebra finches that were hatched and raised in 12:12 h LD cycle (Ev, day = 150 ± 5 lx; Ev, night = 0 lx) at 22 ± 2 °C temperature. Half of the birds (n = 8) were maintained on LD cycle and temperature, as before (control), to the other half of birds the 12 h dark period was dimly illuminated at ~ 5 lx (dim light at night, dLAN; Ev, day = 150 ± 5 lx; Ev, night = ~ 5 lx) for 6 weeks. The exposure to dLAN altered the 24 h activity and feeding patterns with enhanced activity and feeding at night. Birds under dLAN fattened and gained weight, and had higher night glucose levels. Concurrently, a negative effect of dLAN was found on mRNA expression of ppar-alpha and cd36 genes involved in the fat metabolism in the hypothalamus, intestine, liver and muscle. These results suggest a more global effect of dLAN exposure on obesity and perhaps long-term health risks due to obesity-related complications to diurnal animals including humans inhabiting an urbanized environment.","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":" ","pages":"2201-2210"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adrenochrome formation during photochemical decomposition of "caged" epinephrine derivatives. “笼状”肾上腺素衍生物光化学分解过程中肾上腺素色素的形成。

IF 2.7 3区化学

Photochemical & Photobiological Sciences Pub Date : 2024-12-01 Epub Date: 2024-11-29 DOI: 10.1007/s43630-024-00665-9

Ezhena S Starodubtseva, Tatyana Yu Karogodina, Mikhail A Panfilov, Dmitriy G Sheven, Olga Yu Selyutina, Alexey Yu Vorob'ev, Alexander E Moskalensky

引用次数: 0