Photochemical & Photobiological Sciences最新文献

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Externally supplied ascorbic acid moderates detrimental effects of UV-C exposure in cyanobacteria. 外部供应的抗坏血酸可减轻蓝藻在紫外线-C照射下的有害影响。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2024-07-12 DOI: 10.1007/s43630-024-00612-8
Tridip Phukan, Sukjailin Ryntathiang, Mayashree B Syiem
{"title":"Externally supplied ascorbic acid moderates detrimental effects of UV-C exposure in cyanobacteria.","authors":"Tridip Phukan, Sukjailin Ryntathiang, Mayashree B Syiem","doi":"10.1007/s43630-024-00612-8","DOIUrl":"https://doi.org/10.1007/s43630-024-00612-8","url":null,"abstract":"<p><p>The defensive role performed by exogenously supplied ascorbic acid in the cyanobacterium Nostoc muscorum Meg1 against damages produced by UV-C radiation exposure was assessed in this study. Exposure to UV-C (24 mJ/cm<sup>2</sup>) significantly enhanced reactive oxygen species (ROS) (50%) along with peroxidation of lipids (21%) and protein oxidation (22%) in the organism. But, addition of 0.5 mM ascorbic acid prior to UV-C exposure showed reduction in ROS production (1.7%) and damages to lipids and proteins (1.5 and 2%, respectively). Light and transmission electron microscopic studies revealed that ascorbic acid not only protected filament breakage but also restricted severe ultrastructural changes and cellular damages in the organism. Although the growth of the organism was repressed up to 9% under UV-C treatment within 15 days, a pre-treatment with ascorbic acid led to growth enhancement by 42% in the same period. Various growth parameters such as photo-absorbing pigments (phycoerythrin, phycocyanin, allophycocyanin, chlorophyll a, and carotenoids), water splitting complex (WSC), D1 protein, RuBisCO, glutamine synthetase and nitrogenase activities in the UV-C treated organism were seen to be relatively intact in the presence of ascorbic acid. Thus, a detailed analysis undertaken in the present study was able to demonstrate that ascorbic acid not only act as first responder against harmful UV-C radiation by down-regulating ROS production, it also accelerated the growth performance in the organism in the post UV-C incubation period as an immediate response to an adverse experience presented in the form of UV-C radiation exposure.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588990","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
Intramolecular [π4s + π4s] photocycloaddition of carbon- and nitrogen-bridged [32](1,4)naphthalenophanes. 碳和氮桥式 [32](1,4)萘烷的分子内 [π4s + π4s] 光环加成。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2024-07-10 DOI: 10.1007/s43630-024-00610-w
Yukiko Oguma, Masanori Yamamoto, Yukinari Sunatsuki, Hiromi Ota, Minoru Yamaji, Hideki Okamoto
{"title":"Intramolecular [π4s + π4s] photocycloaddition of carbon- and nitrogen-bridged [3<sub>2</sub>](1,4)naphthalenophanes.","authors":"Yukiko Oguma, Masanori Yamamoto, Yukinari Sunatsuki, Hiromi Ota, Minoru Yamaji, Hideki Okamoto","doi":"10.1007/s43630-024-00610-w","DOIUrl":"https://doi.org/10.1007/s43630-024-00610-w","url":null,"abstract":"<p><p>[3<sub>2</sub>](1,4)Naphthalenophanes, bearing carbon-bridge chains (syn- and anti-NPs) and nitrogen-bridge chains (syn- and anti-ANPs), were synthesized, and their X-ray structures and photoreactions were investigated. The intramolecular separation distance between the naphthalene cores for ANPs was shorter than that for NPs, suggesting that intramolecular interactions between the naphthalene rings  were more efficient for ANPs compared to NPs. Upon photoirradiation at 300 nm, anti-NP, syn-ANP and anti-ANP produced the corresponding intramolecular [π4s + π4s] cycloadducts, whereas syn-NP gave an unidentified complex product mixture. Quantum yields for the photo-consumption (Φ<sub>PC</sub>) of NPs and ANPs were evaluated to quantitatively compare their photoreactivity. The Φ<sub>PC</sub> values of ANPs were approximately two-fold higher than those of ANPs.Noteworthily, the Φ<sub>PC</sub> value of syn-ANP was estimated to be unity. Based on these results we discuss the effects of the alignments of the naphthalene cores (anti vs. syn) and the bridging elements (C-bridge vs. N-bridge) on the photoreaction efficiencies of [3<sub>2</sub>](1,4)naphthalenophanes.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141562019","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
Projected changes in ultraviolet index and UV doses over the twenty-first century: impacts of ozone and aerosols from CMIP6. 预测二十一世纪紫外线指数和紫外线剂量的变化:CMIP6 中臭氧和气溶胶的影响。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2024-07-01 Epub Date: 2024-05-19 DOI: 10.1007/s43630-024-00594-7
Ana Letícia Campos Yamamoto, Marcelo de Paula Corrêa, Roger Rodrigues Torres, Fabrina Bolzan Martins, Sophie Godin-Beekmann
{"title":"Projected changes in ultraviolet index and UV doses over the twenty-first century: impacts of ozone and aerosols from CMIP6.","authors":"Ana Letícia Campos Yamamoto, Marcelo de Paula Corrêa, Roger Rodrigues Torres, Fabrina Bolzan Martins, Sophie Godin-Beekmann","doi":"10.1007/s43630-024-00594-7","DOIUrl":"10.1007/s43630-024-00594-7","url":null,"abstract":"<p><p>This study evaluated the health-related weighted ultraviolet radiation (UVR) due to the total ozone content (TOC) and the aerosol optical depth (AOD) changes. Clear-sky Ultraviolet Index (UVI), daily doses, and exposure times for erythema induction (D<sub>ery</sub> and T<sub>ery</sub>) and vitamin D synthesis (D<sub>vitD</sub> and T<sub>vitD</sub>) were computed by a radiative transfer estimator. TOC and AOD data were provided by six Earth System Models (ESMs) from the Coupled Model Intercomparison Project Phase 6 (CMIP6). For projections, we consider four Shared Socioeconomic Pathways scenarios-SSPs (SSP1-2.6, SSP2-4.5, SSP3-7.0, and SSP5-8.5)-and two time-slices (near: 2041-2060 and far future: 2081-2100). UVR projections showed pronounced changes for the summer hemispheres in the far future. TOC increases in mid- and high latitudes of the Southern Hemisphere caused decreases in UVR at the summer solstice. However, projections did not indicate sun-safe exposure conditions in South America, Australia, and Southern Africa. On the contrary, exposure around solar noon from 10 to 20 min will still be sufficient to induce erythema in skin type III individuals throughout this century. In southern Argentina and Chile, the UVR insufficiency for vitamin D synthesis at solar noon in skin type III remains the same during this century at the winter solstice. In the Northern Hemisphere, UVI and D<sub>ery</sub> at the summer solstice should remain high (UVI ≥ 8; D<sub>ery</sub> ~ 7.0 kJ m<sup>-2</sup>) in highly populated locations. Above 45 °N, UVR levels cannot be enough to synthesize vitamin D in skin type III during the boreal winter. Our results show that climate change will affect human health through excess or lack of solar UVR availability.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140955268","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
Recent progress of metal halide perovskite materials in heterogeneous photocatalytic organic reactions. 金属卤化物包晶材料在异相光催化有机反应中的最新进展。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2024-07-01 Epub Date: 2024-06-08 DOI: 10.1007/s43630-024-00599-2
Chunpei Yan, Yan Qian, Zhaohong Liao, Zhanggao Le, Qiangwen Fan, Haibo Zhu, Zongbo Xie
{"title":"Recent progress of metal halide perovskite materials in heterogeneous photocatalytic organic reactions.","authors":"Chunpei Yan, Yan Qian, Zhaohong Liao, Zhanggao Le, Qiangwen Fan, Haibo Zhu, Zongbo Xie","doi":"10.1007/s43630-024-00599-2","DOIUrl":"10.1007/s43630-024-00599-2","url":null,"abstract":"<p><p>Photocatalytic technology is widely regarded as an important way to utilize solar energy and achieve carbon neutrality, which has attracted considerable attentions in various fields over the past decades. Metal halide perovskites (MHPs) are recognized as \"superstar\" materials due to their exceptional photoelectric properties, readily accessible and tunable structure, which made them intensively studied in solar cells, light-emitting diodes, and solar energy conversion fields. Since 2018, increased attention has been focused on applying the MHPs as a heterogeneous visible light photocatalyst in catalyzing organic synthesis reactions. In this review, we present an overview of photocatalytic technology and principles of heterogeneous photocatalysis before delving into the structural characteristics, stability, and classifications of MHPs. We then focus on recent developments of MHPs in photocatalyzing various organic synthesis reactions, such as oxidation, cyclization, C-C coupling etc., based on their classifications and reported reaction types. Finally, we discuss the main limitations and prospects regarding the application of metal halide perovskites in organic synthesis.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141292823","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
Exploring the complexities of plant UV responses; distinct effects of UV-A and UV-B wavelengths on Arabidopsis rosette morphology. 探索植物紫外线反应的复杂性;UV-A 和 UV-B 波长对拟南芥莲座形态的不同影响。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2024-07-01 Epub Date: 2024-05-12 DOI: 10.1007/s43630-024-00591-w
Natalie Cunningham, Gaia Crestani, Kristóf Csepregi, Neil E Coughlan, Marcel A K Jansen
{"title":"Exploring the complexities of plant UV responses; distinct effects of UV-A and UV-B wavelengths on Arabidopsis rosette morphology.","authors":"Natalie Cunningham, Gaia Crestani, Kristóf Csepregi, Neil E Coughlan, Marcel A K Jansen","doi":"10.1007/s43630-024-00591-w","DOIUrl":"10.1007/s43630-024-00591-w","url":null,"abstract":"<p><p>UV-B radiation can substantially impact plant growth. To study UV-B effects, broadband UV-B tubes are commonly used. Apart from UV-B, such tubes also emit UV-A wavelengths. This study aimed to distinguish effects of different UV-B intensities on Arabidopsis thaliana wildtype and UVR8 mutant rosette morphology, from those by accompanying UV-A. UV-A promotes leaf-blade expansion along the proximal-distal, but not the medio-lateral, axis. Consequent increases in blade length: width ratio are associated with increased light capture. However, petiole length is not affected by UV-A exposure. This scenario is distinct from the shade avoidance driven by low red to far-red ratios, whereby leaf blade elongation is impeded but petiole elongation is promoted. Thus, the UV-A mediated elongation response is phenotypically distinct from classical shade avoidance. UV-B exerts inhibitory effects on petiole length, blade length and leaf area, and these effects are mediated by UVR8. Thus, UV-B antagonises aspects of both UV-A mediated elongation and classical shade avoidance. Indeed, this study shows that accompanying UV-A wavelengths can mask effects of UV-B. This may lead to potential underestimates of the magnitude of the UV-B induced morphological response using broadband UV-B tubes.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11224116/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140910778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Substituent effects of halogens on the excited-state intermolecular proton transfer reactions. 卤素对激发态分子间质子转移反应的取代作用。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2024-07-01 Epub Date: 2024-06-08 DOI: 10.1007/s43630-024-00598-3
Hiroki Oyama, Yoshinobu Nishimura
{"title":"Substituent effects of halogens on the excited-state intermolecular proton transfer reactions.","authors":"Hiroki Oyama, Yoshinobu Nishimura","doi":"10.1007/s43630-024-00598-3","DOIUrl":"10.1007/s43630-024-00598-3","url":null,"abstract":"<p><p>Fluorescent aromatic urea compounds undergo excited-state intermolecular proton transfer (ESPT) in the presence of acetate anions to produce an excited state of the tautomer (T*) from the excited state of the complex (N*), resulting in dual fluorescence. Herein, we performed spectroscopic measurements of anthracen-1-yl-3-phenylurea derivatives with substituents, -CF<sub>3</sub>, -F, or -Cl, at the p-position of the phenyl group in the presence of acetate to investigate the substituent effects on the ESPT reaction and the deactivation processes of N* and T*. Kinetic analysis showed that the reverse ESPT rate constant (k<sub>-PT</sub>) depended on the respective substituents, suggesting that each substituent may influence the reverse ESPT process differently. In particular, since the electron-withdrawing properties of -F are estimated by the - I and + Iπ effects, it is plausible that -F has a slight electron-donating property and influences the reverse process from T* to N* in the excited state. This study shows that it is possible to control emission by selecting specific substituents in the ESPT system.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141292824","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
Synthesis of 1H-isoindolin-1-ones via a simple photodecarboxylative addition of carboxylates to phthalimides and evaluation of their antibiotic activity. 通过羧酸盐与邻苯二甲酰亚胺的简单光致羧酸加成法合成 1H-异吲哚啉-1-酮并评估其抗生素活性。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2024-07-01 Epub Date: 2024-06-18 DOI: 10.1007/s43630-024-00600-y
Aiden Kemp, Marine Durand, Daniel Wall, Peter Szieber, M Iris Hermanns, Michael Oelgemöller
{"title":"Synthesis of 1H-isoindolin-1-ones via a simple photodecarboxylative addition of carboxylates to phthalimides and evaluation of their antibiotic activity.","authors":"Aiden Kemp, Marine Durand, Daniel Wall, Peter Szieber, M Iris Hermanns, Michael Oelgemöller","doi":"10.1007/s43630-024-00600-y","DOIUrl":"10.1007/s43630-024-00600-y","url":null,"abstract":"<p><p>A variety of 3-hydroxy-isoindolin-1-one derivatives were synthesized using the photodecarboxylative addition of carboxylates to phthalimide derivatives in aqueous media. Subsequent acid-catalyzed dehydration furnished 3-(alkyl and aryl)methyleneisoindolin-1-ones with variable E-diastereoselectivity in good to excellent overall yields. Noteworthy, the parent 3-phenylmethyleneisoindolin-1-one underwent isomerization and oxidative decomposition when exposed to light and air. Selected 3-hydroxy-isoindolin-1-one and 3-(alkyl and aryl)methyleneisoindolin-1-one derivatives showed moderate antibacterial activity that justifies future elaboration and study of these important bioactive scaffolds.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141416732","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
Hypericin-mediated photodynamic therapy inhibits metastasis and EMT of colorectal cancer cells by regulating RhoA-ROCK1 signaling pathway. 金丝桃素介导的光动力疗法通过调节 RhoA-ROCK1 信号通路抑制结直肠癌细胞的转移和 EMT。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2024-07-01 Epub Date: 2024-06-12 DOI: 10.1007/s43630-024-00601-x
Jinhang Hu, Xin Wen, Jiangluqi Song
{"title":"Hypericin-mediated photodynamic therapy inhibits metastasis and EMT of colorectal cancer cells by regulating RhoA-ROCK1 signaling pathway.","authors":"Jinhang Hu, Xin Wen, Jiangluqi Song","doi":"10.1007/s43630-024-00601-x","DOIUrl":"10.1007/s43630-024-00601-x","url":null,"abstract":"<p><p>Colorectal cancer (CRC) is significantly contributed to global cancer mortality rates. Treating CRC is particularly challenging due to metastasis and drug resistance. There is a pressing need for new treatment strategies against metastatic CRC. Photodynamic therapy (PDT) offers a well-established, minimally invasive treatment option for cancer with limited side effects. Hypericin (HYP), a potent photosensitizer for PDT, has been documented to induce cytotoxicity and apoptosis in various types of cancers. However, there are few reports on the inhibitory effects of HYP-mediated PDT on the metastatic ability of CRC cells. Here, we evaluate the inhibitory effects of HYP-mediated PDT against metastatic CRC cells and define its underlying mechanisms. Wound-healing and Transwell assays show that HYP-mediated PDT suppresses migration and invasion of CRC cells. F-actin visualization assays indicate HYP-mediated PDT decreases F-actin formation in CRC cells. TEM assays reveal HYP-mediated PDT disrupts pseudopodia formation of CRC cells. Mechanistically, immunofluorescence and western blotting results show that HYP-mediated PDT upregulates E-cadherin and downregulates N-cadherin and Vimentin. HYP-mediated PDT also suppresses key EMT regulators, including Snail, MMP9, ZEB1 and α-SMA. Additionally, the expressions of RhoA and ROCK1 are downregulated by HYP-mediated PDT. Together, these findings suggest that HYP-mediated PDT inhibits the migration and invasion of HCT116 and SW620 cells by modulating EMT and RhoA-ROCK1 signaling pathway. Thus, HYP-mediated PDT presents a potential therapeutic option for CRC.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141304898","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
Construction of a mitochondria-targeted probe to monitor cysteine levels in cancer cells and zebrafish. 构建线粒体靶向探针,监测癌细胞和斑马鱼体内的半胱氨酸水平。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2024-07-01 Epub Date: 2024-06-01 DOI: 10.1007/s43630-024-00592-9
Meixia Tan, Juan Duan, Sishi Chen, Yan Chen, Jin Wang, Xiuzhi Xu, Fang Ke
{"title":"Construction of a mitochondria-targeted probe to monitor cysteine levels in cancer cells and zebrafish.","authors":"Meixia Tan, Juan Duan, Sishi Chen, Yan Chen, Jin Wang, Xiuzhi Xu, Fang Ke","doi":"10.1007/s43630-024-00592-9","DOIUrl":"10.1007/s43630-024-00592-9","url":null,"abstract":"<p><p>Cysteine (Cys) plays an indispensable role as an antioxidant in the maintenance of bioredox homeostasis. We have constructed an efficient fluorescent probe Mito-Cys based on the binding of indole and naphthol. The acrylic ester group serves as a recognition switch for specific detection of Cys, which undergoes Michael addition and intramolecular cyclization reactions, thereby ensuring the chemical kinetics priority of Cys compared to other biothiols. The probe has good water solubility, large Stokes shift (137 nm), with a detection limit of 21.81 nM. In addition, cell imaging experiments have shown that the probe has excellent mitochondrial targeting ability (R = 0.902). The probe can distinguish between Cys, homocysteine (Hcy) and glutathione (GSH), and can detect Cys specifically and quickly (100 s) to ensure accurate quantitative analysis of Cys changes in cells. More importantly, the probe confirms that ferroptosis inducing factors trigger thiol starvation in mitochondria, which helps to gain a deeper understanding of the physiological and pathological functions related to Cys and ferroptosis.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141185526","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
High-efficiency triplet-triplet annihilation upconversion microemulsion with facile preparation and decent air tolerance. 高效三重-三重湮灭上转换微乳液,制备简便,空气耐受性良好。
IF 2.7 3区 化学
Photochemical & Photobiological Sciences Pub Date : 2024-07-01 Epub Date: 2024-06-05 DOI: 10.1007/s43630-024-00596-5
Renjie Zuo, Zecong Ye, Hui Liang, Yanping Huo, Shaomin Ji
{"title":"High-efficiency triplet-triplet annihilation upconversion microemulsion with facile preparation and decent air tolerance.","authors":"Renjie Zuo, Zecong Ye, Hui Liang, Yanping Huo, Shaomin Ji","doi":"10.1007/s43630-024-00596-5","DOIUrl":"10.1007/s43630-024-00596-5","url":null,"abstract":"<p><p>Current research of triplet-triplet annihilation upconversion (TTA-UC) faces difficulty such as overuse of organic solvents and quenching of excited triplet sensitizers by molecular oxygen. Herein, we propose an efficient and facile preparation strategy of TTA-UC microemulsion to overcome these issues. With simple device and short preparation process, air-stable TTA-UC with a high upconversion efficiency of 16.52% was achieved in microemulsion coassembled from TritonX114, tetrahydrofuran and upconverting chromophores (platinum octaethyl-porphyrin and 9,10-diphenylanthracene). This is comparable to the highest UC efficiency ever reported for TTA-UC microemulsion systems. The excellent UC performance of TX114-THF could be attributed to two perspectives. Firstly, small-size micelle accommodated chromophores up to high concentrations in organic phase, which promoted efficient molecular collision. Additionally, high absorbance at 532 nm ensured full use of excitation light, getting more long wavelength photons involved in the TTA-UC process. Moreover, air-stable TTA-UC also performed well in microemulsion with various surfactants, including nonionic surfactants (Tween 20, Tween 80, Triton X-110, Triton X-114), ionic surfactants (sodium dodecyl sulfate, cetyltrimethyl ammonium bromide) and block copolymers (pluronic F127, pluronic P123), through three conjectural assembly models according to the structural characteristics of surfactant molecules (concentrated, uncompacted and scattered). These discoveries could provide estimable reference for selection of surfactants in relevant fields of TTA-UC.</p>","PeriodicalId":98,"journal":{"name":"Photochemical & Photobiological Sciences","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141260253","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
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