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Chlorophyllin and sunlight against Penicillium digitatum: exploring Photodynamic Inactivation as a green postharvest technology in citriculture. 叶绿素和阳光对指状青霉菌的抑制作用:探讨采后柑橘的光动力灭活技术。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2025-04-01 Epub Date: 2025-04-09 DOI: 10.1007/s43630-025-00706-x
Linda Jernej, Jun Liu, Michael Fefer, Kristjan Plaetzer
{"title":"Chlorophyllin and sunlight against Penicillium digitatum: exploring Photodynamic Inactivation as a green postharvest technology in citriculture.","authors":"Linda Jernej, Jun Liu, Michael Fefer, Kristjan Plaetzer","doi":"10.1007/s43630-025-00706-x","DOIUrl":"10.1007/s43630-025-00706-x","url":null,"abstract":"<p><p>Green mold, induced by the fungal phytopathogen Penicillium digitatum, is one of the major causes of postharvest losses in citriculture. To minimize mold infections oranges are treated harshly with fungicides, edible coatings, or physical treatment, leading to evolving resistance, low consumer acceptance, or reduced crop quality, respectively. Photodynamic Inactivation (PDI) might represent an ecofriendly alternative for treatment of P. digitatum spoilage, especially if based on natural photosensitizers. Here, we introduce PDI using three formulations consisting of different concentrations of the natural photosensitizer sodium magnesium chlorophyllin (Chl), Na<sub>2</sub>EDTA as cell-wall permeabilizing agent and a surfactant for postharvest treatment of P. digitatum. As experimental model systems (i) mycelial spheres in liquid suspension, (ii) fungal spores or (iii) a newly developed experimental setup using orange peel plugs are employed. Illumination was done by an LED device with a main wavelength of 395 nm (106 J cm<sup>-2</sup>). The lowest concentrated photosensitizer formulation (219 µM Chl) effectively photokilled samples of model systems (i) and (ii) with 100% and 62.5% dead samples, respectively. Orange peel plugs of model system (iii) were best disinfected using the mid-concentrated formulation (475 µM Chl, 70% dead samples). Additionally, model systems (ii) and (iii) were treated with the mid-concentrated formulation and illuminated by sunlight. Eradication of P. digitatum liquid spore culture (ii) was enhanced when illuminating with sunlight (300 J cm<sup>-2</sup>). Further, a complete disinfection of orange peel plugs (iii, 100% dead samples) was achieved with sunlight (300 J cm<sup>-2</sup>). To evaluate the antioxidant scavenging activity post-PDI treatment with LED light (395 nm, 106 J cm<sup>-2</sup>) a DPPH assay was performed on model system (iii). The treatment with the mid- and low-concentrated Chl formulations and LED light showed little to no change in DPPH scavenging activity when compared to the not-illuminated controls. Concisely, with this study we demonstrate that PDI using Chl-based photosensitizer formulations has an in vitro antifungal effect against P. digitatum, without altering the antioxidant scavenging activity of the fruit. Different model systems, to mimic the different stages of green mold infection, were effectively treated with Chl and sunlight.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":" ","pages":"555-568"},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143810390","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
Light-driven self-sterilizing cotton fabric and drug delivery: improvement of the antimicrobial activity of 4-sulfo-1,8-naphthalimide via its dendrimer and metallic dendrimer formation. 光驱动自杀菌棉织物和药物递送:通过4-亚砜-1,8-萘酰亚胺的树状大分子和金属树状大分子的形成提高其抗菌活性。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2025-04-01 Epub Date: 2025-04-18 DOI: 10.1007/s43630-025-00710-1
Desislava Staneva, Awad I Said, Petar Grozdanov, Ivanka Nikolova, Radostina Stoyanova, Albena Jordanova, Ivo Grabchev
{"title":"Light-driven self-sterilizing cotton fabric and drug delivery: improvement of the antimicrobial activity of 4-sulfo-1,8-naphthalimide via its dendrimer and metallic dendrimer formation.","authors":"Desislava Staneva, Awad I Said, Petar Grozdanov, Ivanka Nikolova, Radostina Stoyanova, Albena Jordanova, Ivo Grabchev","doi":"10.1007/s43630-025-00710-1","DOIUrl":"https://doi.org/10.1007/s43630-025-00710-1","url":null,"abstract":"<p><p>The search for new bioactive substances with microbiological activity is dictated by the increasing resistance of the drugs used in clinical practice against various pathogenic microorganisms. In this respect, particular attention is paid to the modified dendrimers with biologically active substances and their metal complexes. This work describes synthesizing and characterizing a new copper complex of first-generation polypropylene imine (PPI) dendrimer, modified with 4-sulfo-1,8-naphthalimide. The new metallodendrimer [Cu<sub>2</sub>(E)(NO<sub>3</sub>)<sub>4</sub>] has been characterized by IR and electron paramagnetic resonance (EPR) spectroscopy. Two copper ions were found to form a complex with the dendrimer ligand. Cotton fabrics were treated with the dendrimer ligand (E), its monomer structural analog (M), and metallodendrimer. The microbiological activity of the three compounds and the treated cotton fabrics with them has been tested in the dark and after light irradiation against bacterial strains: Gram-positive B. cereus and Gram-negative P. aeruginosa. The results showed that the metallodendrimer was slightly more effective than the dendrimer ligand E and monomer M, and their activity was enhanced after light irradiation. The increase in antimicrobial activity after light irradiation was due to the generation of highly reactive singlet oxygen, which damages bacteria's cell membrane, leading to their inactivation. The similar activity against both types of bacteria indicates that all three compounds can be classified as broad-spectrum antimicrobial agents. The virucidal effects of the studied compounds were also tested against human adenovirus type 5 (HAdV5) and human respiratory syncytial virus (HRSV-S2) after 30 min/60 min. The newly synthesized compounds showed no activity against HAdV-5, but the activity against HSV-2 viruses increases with the prolongation of their interaction.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":"24 4","pages":"593-606"},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143957389","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
Phototherapy of granuloma annulare: a single center retrospective study. 光疗环形肉芽肿:单中心回顾性研究。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2025-04-01 Epub Date: 2025-04-17 DOI: 10.1007/s43630-025-00716-9
Ines Katharina Himmelstoss, Franz Josef Legat, Alexandra Gruber-Wackernagel, Peter Wolf, Angelika Hofer
{"title":"Phototherapy of granuloma annulare: a single center retrospective study.","authors":"Ines Katharina Himmelstoss, Franz Josef Legat, Alexandra Gruber-Wackernagel, Peter Wolf, Angelika Hofer","doi":"10.1007/s43630-025-00716-9","DOIUrl":"https://doi.org/10.1007/s43630-025-00716-9","url":null,"abstract":"<p><strong>Background: </strong>Granuloma annulare is a chronic, benign skin condition characterized by small erythematous patches, plaques or papules in annular or disseminated order. Due to the cosmetic impact, many patients experience a significant level of distress. Nevertheless, selecting the optimal treatment method often poses a challenge due to the limited available data. A remission of skin lesions can be achieved through topical, systemic, or intralesional therapies, and various forms of phototherapy.</p><p><strong>Patients and methodology: </strong>This retrospective study included 58 patients diagnosed with granuloma annulare and evaluated a total of 73 cycles of phototherapy (UVA-1, oral-PUVA, bath-PUVA) concerning treatment response and adverse events. It was conducted at the outpatient phototherapy clinic of the University Department for Dermatology and Venereology, Medical University of Graz. The Data was collected over the period from February 2011 and February 2021.</p><p><strong>Results: </strong>Complete response was achieved in 37.5% of the 16 bath-PUVA therapy cycles, 25.7% of the 35 oral-PUVA therapy cycles, and 35.3% of the 17 UVA-1 therapy cycles. Partial response was noted in 62.5% of the oral-PUVA therapies, 50% of the bath-PUVA therapies, and 41.2% of the UVA-1 therapies. Generally, the adverse events of phototherapy were mild, with the highest incidence of adverse events associated with oral-PUVA and the lowest with UVA-1 therapy.</p><p><strong>Conclusions: </strong>No significant differences in efficacy were found between UVA-1 therapy, oral-PUVA, and bath-PUVA. However, UVA-1 therapy resulted in the fewest adverse events. Given the frequent occurrence of recurrences, the risk-benefit profile of each therapy should be carefully assessed in advance.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":"24 4","pages":"651-658"},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143953544","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
UVB irradiation induces melanocyte damage through ferroptosis: mechanisms and implications. UVB照射通过铁下垂诱导黑素细胞损伤:机制和意义。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2025-04-01 Epub Date: 2025-04-11 DOI: 10.1007/s43630-025-00712-z
Danfeng Xu, Yan Teng, Youming Huang, Yong Yu, Xiaohua Tao, Xiaoxia Ding, Yibin Fan
{"title":"UVB irradiation induces melanocyte damage through ferroptosis: mechanisms and implications.","authors":"Danfeng Xu, Yan Teng, Youming Huang, Yong Yu, Xiaohua Tao, Xiaoxia Ding, Yibin Fan","doi":"10.1007/s43630-025-00712-z","DOIUrl":"https://doi.org/10.1007/s43630-025-00712-z","url":null,"abstract":"<p><strong>Background: </strong>Ultraviolet B (UVB) irradiation can damage melanocytes, leading to skin disorders such as photoaging, melanoma, and vitiligo. While UVB-induced apoptosis and autophagy are well-studied, the role of ferroptosis, an iron-dependent form of programmed cell death, in melanocyte damage remains unclear.</p><p><strong>Methods: </strong>Human epidermal melanocytes were exposed to UVB irradiation, and the effects on cell viability, apoptosis, reactive oxygen species (ROS) production, and iron metabolism were assessed using MTT, flow cytometry, DHE staining, and iron assays. RNA sequencing and bioinformatics analyses were conducted to explore differential gene expression and pathway activation. Ferrostatin-1 (Fer-1) was used to inhibit ferroptosis and evaluate its protective effects.</p><p><strong>Results: </strong>UVB exposure significantly reduced melanocyte viability, increased apoptosis, elevated ROS levels, and disrupted iron metabolism. Fer-1 treatment alleviated these effects by inhibiting ferroptosis. RNA sequencing showed activation of Ras, Rap1, PI3K-Akt, and Mitogen-Activated Protein Kinase (MAPK) signaling pathways, along with alterations in iron metabolism-related genes (e.g., FAXDC2, CYP3A5). Although classic ferroptosis core genes were not notably changed, the MAPK pathway and iron metabolism may indirectly contribute to UVB-induced ferroptosis.</p><p><strong>Conclusion: </strong>UVB-induced melanocyte damage involves ferroptosis, potentially triggered by the MAPK pathway and iron metabolism. Fer-1 effectively protects melanocytes by inhibiting ferroptosis, underscoring its therapeutic potential for UVB-related skin disorders.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":"24 4","pages":"629-639"},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143951137","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
Bio-stabilized AuNPs as a reliable fluorescence sensing probe for Hg2+: application for environmental water sample. 生物稳定AuNPs作为一种可靠的Hg2+荧光传感探针:在环境水样中的应用。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2025-04-01 Epub Date: 2025-04-29 DOI: 10.1007/s43630-025-00718-7
Shubhangi Mane-Gavade, Supriya A Patil, Vidhya Jadhav, Akshata Pattanshetti, Sandip Nipane, Xiao-Ying Yu, Deok-Kee Kim, Sandip Sabale
{"title":"Bio-stabilized AuNPs as a reliable fluorescence sensing probe for Hg<sup>2+</sup>: application for environmental water sample.","authors":"Shubhangi Mane-Gavade, Supriya A Patil, Vidhya Jadhav, Akshata Pattanshetti, Sandip Nipane, Xiao-Ying Yu, Deok-Kee Kim, Sandip Sabale","doi":"10.1007/s43630-025-00718-7","DOIUrl":"https://doi.org/10.1007/s43630-025-00718-7","url":null,"abstract":"<p><p>Gold nanoparticles (AuNPs) have gained attention due to their unique optical and electronic properties. Their exceptional stability, high conductivity, and strong light interaction also make them ideal for sensing applications. In this study, we developed a green microwave-assisted approach for synthesizing uniform (~ 10 nm) AuNPs using Acacia concinna fruit extract as a bio-stabilizing agent. Synthesized AuNPs were employed for a rapid and straightforward AuNPs-based sensing probe for the detection of mercury ions (Hg<sup>2+</sup>) in aqueous samples and merbromin medicine, exhibiting fluorescence at 793 nm. The sensing probe was established using a fluorescence quenching approach for selective detection of Hg<sup>2</sup>⁺. Results indicate that the AuNPs demonstrate high selectivity for Hg<sup>2</sup>⁺ compared to other cations, including Pb<sup>2</sup>⁺, Cd<sup>2</sup>⁺, Fe<sup>2</sup>⁺, Ni<sup>2</sup>⁺, Ba<sup>2</sup>⁺, Zn<sup>2</sup>⁺, Cu<sup>2+</sup>, Ag<sup>+</sup> and Cr<sup>6+</sup>. A strong correlation between Hg<sup>2</sup>⁺ concentration and the observed fluorescence intensity ratio (F₀/F) enables precise quantitative detection, with a limit of detection (LOD) of 0.60 µg/mL in water samples. This study highlights the effectiveness of the fluorescence quenching method as a cost-effective, rapid, and simple tool for Hg<sup>2</sup>⁺ detection in both environmental water samples and medicinal applications.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":"24 4","pages":"659-668"},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143958988","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
Correction: Sun-protection factor of zinc-oxide sunscreens: SPFin vitro too low compared to SPFin vivo-a brief review. 更正:氧化锌防晒霜的防晒系数:与体内防晒系数相比,体外防晒系数过低。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2025-04-01 DOI: 10.1007/s43630-025-00721-y
Uli Osterwalder, Jean-Claude Hubaud, Eva Perroux-David, Thibault Moraine, Jeroen van den Bosch
{"title":"Correction: Sun-protection factor of zinc-oxide sunscreens: SPF<sub>in vitro</sub> too low compared to SPF<sub>in vivo</sub>-a brief review.","authors":"Uli Osterwalder, Jean-Claude Hubaud, Eva Perroux-David, Thibault Moraine, Jeroen van den Bosch","doi":"10.1007/s43630-025-00721-y","DOIUrl":"https://doi.org/10.1007/s43630-025-00721-y","url":null,"abstract":"","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":"24 4","pages":"679"},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143955477","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
Time- and season-dependent changes in the steroidogenic markers in female tree sparrow (Passer montanus). 雌性树雀(Passer montanus)甾体生成标记物的时间和季节依赖性变化。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2025-04-01 Epub Date: 2025-04-12 DOI: 10.1007/s43630-025-00711-0
Subu Yatung, Amit Kumar Trivedi
{"title":"Time- and season-dependent changes in the steroidogenic markers in female tree sparrow (Passer montanus).","authors":"Subu Yatung, Amit Kumar Trivedi","doi":"10.1007/s43630-025-00711-0","DOIUrl":"https://doi.org/10.1007/s43630-025-00711-0","url":null,"abstract":"<p><p>Seasonal breeders display elevated sex steroid hormone production during reproductive seasons, resulting in significant physiological and structural alterations. One such seasonal breeder adapted to the changing environment is a Tree sparrow (Passer montanus). The study aims to investigate 24-h rhythmicity and annual variations in the expression of steroidogenic gene markers of adult female tree sparrows. Two experiments were conducted; in experiment one, birds (n = 5 birds/time points) were sampled at six time points, i.e., ZT1, ZT5, ZT9, ZT13, ZT17, and ZT21 (ZT = Zeitgeber time, ZT0 = sunrise time) during the reproductive stage; subsequently, hypothalamus and ovary were harvested for gene expression analysis. In experiment two, birds (n = 5/month) were sampled at mid-day every month for a year. Feather molt, follicular diameter, body mass, and bill coloration were recorded. The hypothalamus and ovary were harvested for gene expression studies. Blood plasma cholesterol and progesterone were also measured. The study indicates a larger follicular size during May and June. Whereas, maximum molt was observed during the post-reproductive phase. Cholesterol levels were highest prior breeding phase and higher progesterone levels paralleled larger follicular size. While higher levels of GnIh (gonadotropin-inhibitory hormone) and Dio3 (type 3 deiodinase) were observed during the non-breeding phase, elevated expression of Tshβ (thyroid stimulating hormone subunit beta), Dio2 (type 2 deiodinase), and GnRh (gonadotropin-releasing hormone) was noted during the reproductive period. The study also reveals 24-h rhythmicity in selected steroidogenic markers (StAR, Nr4a1, Er, Scp2, Cyp17a1, Foxl2, Cyp11a1, Hsd11b2, Cyp11b, Cyp19a1, and Vdac1) and seasonal variations directly influence steroidogenesis, which connects with the annual reproductive cycle.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":"24 4","pages":"607-628"},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143953605","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
The virucidal potential effects of violet-blue light on influenza D virus. 紫蓝光对流感D型病毒的潜在杀病毒作用。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2025-04-01 Epub Date: 2025-03-26 DOI: 10.1007/s43630-025-00708-9
Serena Marchi, Davide Amodeo, Benedetta Peccetti, Isa De Palma, Gabriele Messina, Emanuele Montomoli, Claudia Maria Trombetta
{"title":"The virucidal potential effects of violet-blue light on influenza D virus.","authors":"Serena Marchi, Davide Amodeo, Benedetta Peccetti, Isa De Palma, Gabriele Messina, Emanuele Montomoli, Claudia Maria Trombetta","doi":"10.1007/s43630-025-00708-9","DOIUrl":"10.1007/s43630-025-00708-9","url":null,"abstract":"<p><p>Influenza D virus (IDV) is a novel influenza virus, first isolated from swine with influenza-like symptoms in the USA in 2011. To date, IDV circulation has been reported in various animal species such as cattle, pigs, horses with the ability to expand its range of hosts. UV radiation has been widely used for the disinfection of various sources such as water, air, and surfaces, especially in places at greater risk of contamination by viruses and bacteria, such as hospitals and health facilities. The aim of this study was to evaluate the potential virucidal effect of a violet-blue light against IDV. Viral suspension of IDV was exposed to a violet-blue light (405 nm) for different times (radiant exposures): 22 min and 30 s (5.4 J/cm<sup>2</sup>), 45 min (10.8 J/cm<sup>2</sup>), 90 min (21.6 J/cm<sup>2</sup>), 180 min (43.2 J/cm<sup>2</sup>), and 360 min (86.4 J/cm<sup>2</sup>), and different temperatures (room temperature, 4 and 37 °C). At the end of exposure, virus titration was performed on MDCK cells. After violet-blue light exposure, a viral titre reduction proportional to exposure time was observed: 0.228 log<sub>10</sub> after 22 min and 30 s, 0.668 log<sub>10</sub> after 45 min, 0.940 log<sub>10</sub> after 90 min, 1.375 log<sub>10</sub> after 180 min and 2.293 log<sub>10</sub> after 360 min. Differences were observed among temperatures of exposure, with the greatest virucidal effect observed at room temperature. As reported for other respiratory viruses, this violet-blue light can potentially be used to reduce IDV spread in potentially hotspot areas for animals and humans.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":" ","pages":"569-578"},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143727251","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
Power conversion efficiency and its comparison of D-π-A and D-D-π-A structured photo-sensitizers. D-π-A和D-D-π-A结构光敏剂的功率转换效率及其比较。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2025-04-01 Epub Date: 2025-04-16 DOI: 10.1007/s43630-025-00713-y
Krupa Elsa Roys, S L Manju, Mohamed Siddiq, Anandan Sambandam
{"title":"Power conversion efficiency and its comparison of D-π-A and D-D-π-A structured photo-sensitizers.","authors":"Krupa Elsa Roys, S L Manju, Mohamed Siddiq, Anandan Sambandam","doi":"10.1007/s43630-025-00713-y","DOIUrl":"https://doi.org/10.1007/s43630-025-00713-y","url":null,"abstract":"<p><p>In this article as an extension of our prior research investigations, we discuss and compare the properties of indole-based D-π-A and D-D-π-A structured dyes and their photovoltaic performances. The photophysical aspects and electrochemical attributes of the previously reported D-π-A and D-D-π-A structured indole dyes were examined to figure out the thermodynamic feasibility of the dyes to perform as photosensitizers. Furthermore, these dyes were used to fabricate dye-sensitized solar cells (DSSCs) and their photovoltaic activity was assessed. The interfacial charge transfer in the DSSCs was identified using electrochemical impedance analysis (EIS). CB-K<sub>2</sub>K<sub>1</sub>S dye-based DSSC device expressed the fill factor (FF) of 0.65, contributing to the highest open-circuit voltage (V<sub>OC</sub>) of 645.3 mV and highest efficiency (η) of 4.33% since it has the highest short-circuit current density (J<sub>SC</sub>) of 9.8 mA cm<sup>-2</sup>, in contrast to MB-K<sub>2</sub>K<sub>1</sub> dye which displayed V<sub>OC</sub> = 613.4 mV, J<sub>SC</sub> = 7.6 mA cm<sup>-2</sup>, FF = 0.63, η = 3.10%.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":"24 4","pages":"669-677"},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143955796","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
A coumarin-nicotinic hydrazone probe for chromofluorogenic detection of toxic cyanide ions and its application in molecular logic gate and real water samples analysis. 香豆素-烟碱腙荧光检测有毒氰化物离子及其在分子逻辑门和实际水样分析中的应用。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2025-04-01 DOI: 10.1007/s43630-025-00704-z
Denzil Britto Christopher Leslee, Logapriya Shanmugam, Narmatha Venkatesan, Bharathi Madheswaran, Venkatesh Ravula, Sekar Karuppannan, Shanmuga Bharathi Kuppannan
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