Journal of Photochemistry and Photobiology A-chemistry最新文献

{"title":"Nanoparticles Pt-Pd (PAPLAL) catalyze tetrahydrobiopterin oxidation and this contributes to the therapy and phototherapy of vitiligo","authors":"T.A. Telegina ,&nbsp;Yu.L. Vechtomova ,&nbsp;D.A. Makarova ,&nbsp;A.S. Nizamutdinov ,&nbsp;A.A. Buglak","doi":"10.1016/j.jphotochem.2025.116404","DOIUrl":"10.1016/j.jphotochem.2025.116404","url":null,"abstract":"<div><div>Vitiligo is a dermatological autoimmune disease characterized by the loss of melanin pigment. The pathogenesis of vitiligo involves oxidative stress and the autoimmune response mediated by it. Given the current state of vitiligo treatment and the role of tetrahydrobiopterin (H₄Bip) as a trigger of vitiligo, the purpose of this work is to study the effect of Pt-Pd nanoparticles (NPs) on the auto- and photooxidation H₄Bip as a therapy for vitiligo.</div><div>Electron microscopy determined: the diameter of palladium NPs was 3.59 ± 0.56 nm and the diameter of platinum NPs was 1.93 ± 0.34 nm. The zeta potential was −16.9 ± 3.4 mV. It was demonstrated that Pt-Pd NPs catalyze the autoxidation of H₄Bip to dihydropterins and their catalytic activity is proportional to the Pt-Pd NPs concentration. The therapeutic effect of NPs may be due to the fact that dihydropterins do not inhibit melanogenesis. NPs also catalyze the formation of dihydropterin dimers upon irradiation of H₄Bip solutions at 308 and 325 nm. The removal of H₄Bip by photooxidation is apparently the basis for phototherapy of vitiligo.</div><div>We have shown for the first time that, along with catalase-like and superoxide dismutase-like effects, one of the main pathways of action of Pt-Pd NPs is the catalysis of the oxidation of H₄Bip to dihydropterins and their conversion into dimers under UV irradiation <em>in situ</em>. Thus, Pt-Pd NPs are apparently able to remove excess of H₄Bip and thereby prevent the development of strong oxidative stress leading to the development of vitiligo.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116404"},"PeriodicalIF":4.1,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705530","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}

{"title":"Exploring defect induced fluorescence in borophene dots","authors":"Usama Anwar ,&nbsp;Junkai Ren ,&nbsp;Luca Malfatti ,&nbsp;Plinio Innocenzi","doi":"10.1016/j.jphotochem.2025.116399","DOIUrl":"10.1016/j.jphotochem.2025.116399","url":null,"abstract":"<div><div>Borophene dots are emerging as promising zero-dimensional nanomaterials due to their unique structural, electronic, and photophysical properties, particularly their defect-induced fluorescence. This study introduces a novel, scalable synthesis for obtaining fluorescent borophene dots by thermal degradation of sodium borohydride in air. The borophene processing involves controlled heating and intermediate cooling cycles. This route enables incorporating oxygen-related defects as active sites for fluorescence under ambient conditions. Comprehensive characterization techniques, including TEM, AFM, XPS, FTIR, and photoluminescence spectroscopy, reveal that the interplay between boron-hydride and oxygen functional groups modulates the photophysical properties of borophene dots. The findings demonstrate that oxygen-related defects enhance light absorption and emission, with photoluminescence arising from defect-mediated radiative transitions. Defect engineering plays a primary role in tailoring the optical properties of borophene dots, which can be used in optoelectronics, sensing, and bioimaging.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116399"},"PeriodicalIF":4.1,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715113","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}

{"title":"Light-driven mechanical motion of a two-dimensional network of polyfluorinated surfactants having azobenzene moiety sandwiched by niobate nanosheets: Effect of pH of intercalation solution","authors":"Yu Nabetani ,&nbsp;Syed Zahid Hassan ,&nbsp;Kazuki Koganemaru ,&nbsp;Hiroshi Tachibana ,&nbsp;Haruo Inoue ,&nbsp;Tsutomu Shiragami","doi":"10.1016/j.jphotochem.2025.116402","DOIUrl":"10.1016/j.jphotochem.2025.116402","url":null,"abstract":"<div><div>A hybrid composed of polyfluoroalkyl azobenzene derivative (C3F-Azo-C6H) and layered niobate nanosheet can undergo interlayer distance change and nanosheet sliding motion upon photo-irradiations. However, such morphology changes are not yet sufficiently controlled, exhibiting somewhat fluctuating results. It is necessary to clarify what kind of intercalation environment promotes the high-order architecture formation suitable for the more efficient photo-induced morphology change. In this study, we have focused on the pH conditions of intercalation solution and analyzed the nanostructure and morphology change of the hybrid fabricated under the basic (pH = 11.0) and the acidic (pH = 2.4) conditions. Intercalating C3F-Azo-C6Hs into the nanosheets under the basic condition afforded a larger interlayer distance as compared with that under the acidic condition. Furthermore, the more substantial interlayer distance change (expansion ratio: 21 %) and the nanosheet sliding (sliding distance: ∼ 200 nm) were successfully induced upon UV–vis photo-irradiations of the hybrid fabricated under the basic conditions, while the hybrid fabricated under the acidic conditions exhibited the smaller changes (interlayer expansion ratio: 0.8 % with unstable/negligible nanosheet sliding). Under the basic conditions, the nanostructure of the C3F-Azo-C6Hs bilayer having non-interdigitation of the terminal alkyl chain of the two-monolayers faced each other in the bilayer caused the substantial morphology changes such as interlayer distance change and nanosheet sliding, whereas the deeply interdigitated terminal alkyl chains in the hybrid fabricated under the acidic conditions caused only a little/negligible morphology change. Factors controlling the drastic changes of the nanostructure derived from the different fabrication conditions have been discussed.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116402"},"PeriodicalIF":4.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685782","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}

{"title":"A water-soluble copper(II) complex fluorescent probe for high-sensitive and selective detection of endogenous H2S","authors":"Qing Miao,&nbsp;Jing-Yi Yin,&nbsp;Yu-Xuan Wang,&nbsp;Chen Zhang,&nbsp;Si-Yue Ma,&nbsp;Lin-Lin Wang,&nbsp;Chao Wang,&nbsp;Guang Chen","doi":"10.1016/j.jphotochem.2025.116403","DOIUrl":"10.1016/j.jphotochem.2025.116403","url":null,"abstract":"<div><div>H₂S has been identified as a third gasotransmitter involved in bio-modulation pathways. However, the low concentration of endogenous H₂S makes it difficult to trace and detect. In this study, a net charged and water-soluble copper(II) complex, <strong>Cu-L</strong>, is reported as an endogenous H₂S detector by utilizing a fluorescence on–off–on strategy. The luminescence of ligand <strong>L</strong> (a DNS-modified DO2A derivant), which is quenched due to Cu²⁺ coordination, can be effectively and selectively relumed within seconds in the presence of H₂S. Meanwhile, <strong>Cu-L</strong> has been successfully employed for exogenous and endogenous H₂S imaging and neither <strong>Cu-L</strong> nor <strong>L</strong> shows toxicity at concentrations up to 50 μM. Moreover, <strong>Cu-L</strong> can trace endogenous H₂S concentration fluctuation by treating cells with different concentrations of S-propargyl-cysteine (SPRC), an endogenous H₂S modulator. Therefore, <strong>Cu-L</strong> holds the potential for H₂S detection both in vitro and in cell.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116403"},"PeriodicalIF":4.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685784","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}

{"title":"The role of surface modification over ZnCrCe-layered double hydroxide on the enhancing of the photodegradation of organic pollutants by layered double hydroxide-derived mixed metal oxides","authors":"Nasrin Aghabeigi ,&nbsp;Zolfaghar Rezvani ,&nbsp;Ali Reza Amani-Ghadim ,&nbsp;Kamellia Nejati ,&nbsp;Moayad Hossaini Sadr","doi":"10.1016/j.jphotochem.2025.116398","DOIUrl":"10.1016/j.jphotochem.2025.116398","url":null,"abstract":"<div><div>The ZnCrCe-mixed metal oxide catalyst (ZnCrCe-MMO) was synthesized through the thermal treatment of ZnCrCe-Layered Double Hydroxides (ZnCrCe-LDHs) precursors. The LDH precursor underwent surface modifications via two distinct methods: acid etching and alkali etching, followed by calcination, resulting in the formation of ZnCrCe-MMO-A and ZnCrCe-MMO-B respectively. These modifications were evaluated for their impact on the photodegradation efficiency of organic pollutants, specifically methylene blue dye (MB) and tetracycline antibiotic (TC). The confirmation of synthesis of the catalysts, along with their physicochemical and electrochemical properties, were thoroughly investigated using a variety of analytical techniques, including XRD, FT-IR, FE-SEM, TGA, BET, HR-TEM, XPS, DRS, ICP, Raman analysis, EDS, and Mott-Schottky analysis. This study reports, for the first time, the photocatalytic degradation of methylene blue and tetracycline pollutants using the ZnCrCe-MMO-A and ZnCrCe-MMO-B catalysts. Furthermore, the formation of intermediate oxidative species (O2̇⁻) during the photocatalytic reactions was identified using various quenchers, and a potential mechanism for the process was proposed. The results indicate that the ZnCrCe-MMO-B catalyst demonstrates superior efficiency in the photocatalytic removal of pollutants. This research elucidates the effects of metal vacancies on the photodegradation process and offers a promising approach for achieving highly efficient photodegradation of organic pollutants.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116398"},"PeriodicalIF":4.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705529","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}

{"title":"A sensitive and selective fluorescence-based bioanalytical method for quantifying 7-aminonitrazepam in urine samples using fluorescamine derivatization and response surface methodology","authors":"Maram H Abduljabbar ,&nbsp;Musaad M Althobaiti ,&nbsp;Farooq M. Almutairi ,&nbsp;Muneef M. Aldhafeeri ,&nbsp;Mohammed F. Aldawsari ,&nbsp;Yusuf S. Althobaiti ,&nbsp;Ahmed Serag ,&nbsp;Atiah H. Almalki","doi":"10.1016/j.jphotochem.2025.116400","DOIUrl":"10.1016/j.jphotochem.2025.116400","url":null,"abstract":"<div><div>Addiction is a growing public health concern, and the reliable detection of drug metabolites in biological samples is crucial for diagnosis, treatment, and forensic applications. This study presents a comprehensive method for the determination of 7-aminonitrazepam, a benzodiazepine metabolite, in urine samples using fluorescamine as a derivatizing agent for sensitive detection by fluorescence spectroscopy. The mechanism involves the reaction of fluorescamine with the primary amine group of 7-aminonitrazepam via nucleophilic addition, yielding a fluorescent product that can be quantified at λ_em 486 nm following excitation at λ_ex 385 nm. The derivatization reaction was optimized by evaluating different parameters, such as pH, reagent concentration, and reaction time, using a central composite design. This revealed a quadratic relationship between the fluorescence intensity and the reaction conditions, particularly the pH and reagent concentration. The method was then validated according to ICH M10 guidelines, demonstrating excellent linearity in the range of 25–1000 ng/mL, precision below 6 %, accuracy between 97.51 and 102.66 %, and high selectivity. The developed method was successfully applied to the analysis of rat urine samples, providing reliable quantification of 7-aminonitrazepam levels posing a promising alternative to conventional techniques.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116400"},"PeriodicalIF":4.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685783","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}

{"title":"Synthesis of novel bioactive amides derived from carbazole moiety with deep-blue and single-component white photoluminescence","authors":"Mostafa Ahmed ,&nbsp;Mostafa Sayed ,&nbsp;A.F. Al-Hossainy ,&nbsp;Mahmoud S. Tolba ,&nbsp;Osamu Tsutsumi ,&nbsp;Osama Younis","doi":"10.1016/j.jphotochem.2025.116394","DOIUrl":"10.1016/j.jphotochem.2025.116394","url":null,"abstract":"<div><div>This work focuses on the chemical synthesis of three fluorescent bioactive amides tethered carbazole moiety by coupling 3-amino-9-ethylcarbazole with different aliphatic carboxylic acids including valeric, hexanoic, and heptanoic acids. NMR spectroscopy and HRMS were utilized to confirm the claimed structure of the target compounds indicating good agreement. The antimicrobial activity of fluorescent amides was assessed against different strains of gram negative and gram-negative bacterial as well as fungi demonstrating outstanding activity close or same as the control. Moreover, the molecular design, DFT calculations, and photoluminescence characteristics of these dyes have been investigated. The examined materials solutions emitted a deep-blue emission. Interestingly, with the powders, on the other hand, a single component emitted white light. The creation of aggregated molecules in the solid state improved the emission intensity at long visible wavelengths, resulting in a change in the emission color from the solution to the powder. The studied materials also emitted consistently at high temperatures. Furthermore, the odd–even effect both on the molecular packing and emission characteristics has been proven. As a result, the molecules under investigation provide a unique combination of benefits: a simple molecular structure, deep-blue emitters, white emission from a single material, and an odd–even effect.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116394"},"PeriodicalIF":4.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685778","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}

{"title":"Theoretical regulation of firefly bioluminescence spectra: Exploring new frontiers in NIR-II imaging","authors":"Jinyu Wang ,&nbsp;Deping Hu ,&nbsp;Ya-Jun Liu","doi":"10.1016/j.jphotochem.2025.116393","DOIUrl":"10.1016/j.jphotochem.2025.116393","url":null,"abstract":"<div><div>Firefly bioluminescence (BL) imaging holds significant promise for non-invasive, real-time monitoring of biological processes. To improve its efficiency, considerable efforts have been made to achieve red-shifting of the emission wavelength. In this work, we systematically investigated the fluorescence properties of the light emitter oxyluciferin (<strong>oLu</strong>) dependent on the electrostatic effects using the TD DFT method. <strong>oLu</strong> is a typical donor–acceptor (D-A) charge transfer system, with the benzothiazole group acting as the electron donor and the thiazole group as the electron acceptor. Therefore, we focused on the significant impact of external charges on the fluorescence wavelength (<em>λ</em>_F), where the negative charge around the benzothiazole (donor) and/or the positive charge around the thiazole (acceptor) side promotes a red-shift in <em>λ</em>_F. Basing on these insights, we theoretically explored modifications to the <strong>oLu</strong> structure and mutations in luciferase to enhance D and A properties of <strong>oLu</strong> for facilitating the <em>λ</em>_F red-shift. Besides, we also inserted conjugation structures between D and A of <strong>oLu</strong> to format D-π-A systems for further red-shifting the <em>λ</em>_F. By integrating <strong>oLu</strong> modifications with luciferase mutations, we successfully designed a new <strong>nova-I351D</strong> using MD and QM/MM methods, a bioluminescent system that emits brightly in the near-infrared II (NIR-II) region. This system demonstrates significant potential for deep tissue imaging, providing a promising advancement in bioluminescence-based imaging technologies.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116393"},"PeriodicalIF":4.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685786","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}

{"title":"Fluorescence anisotropy (FA) of anionic dyes bound to ionic and zwitterionic micelles","authors":"Radha Ranganathan ,&nbsp;Jack Franklin ,&nbsp;Taeboem Oh ,&nbsp;Miroslav Peric","doi":"10.1016/j.jphotochem.2025.116401","DOIUrl":"10.1016/j.jphotochem.2025.116401","url":null,"abstract":"<div><div>Anionic fluorescein and 8-hydroxy-1,3,6-pyrenetrisulfonate (POH), bind to cationic and zwitterionic micelles, experience hindered rotation and exhibit fluorescence anisotropy (FA). Fluorescein emits three lines from its dianion, carboxylate, and phenolate forms. POH emissions are from excited POH* and its deprotonated form, PO⁻. Fluorescence was excited by vertically polarized (V) light. Spectra recorded with vertical (IVV) and horizontal (IVH) polarizers in the emitted beam were corrected for instrument response and polarization bias. Corrected line shapes were fit to Gaussians availing the computationally derived second harmonic for better fit precision. FA of the individual forms of the same dye was calculated from the IVV and IVH intensities of each component line. For fluorescein, FA phenolate &gt; carboxylate &gt; dianion and FA PO⁻ &gt; POH*. Micelle-bound dye conformations, consistent with this order, are presented. Distinguishing between FA of different forms is novel and significant to elucidation of dye-host interactions.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116401"},"PeriodicalIF":4.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715039","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}

{"title":"MnCoO nanosheets with enhanced oxidase mimetic activity: A novel platform for sensitive rutin detection","authors":"Amal A. El-Masry ,&nbsp;Heba Elmansi ,&nbsp;Nahed El-Enany","doi":"10.1016/j.jphotochem.2025.116395","DOIUrl":"10.1016/j.jphotochem.2025.116395","url":null,"abstract":"<div><div>This study introduces a new spectrophotometric approach for rutin quantitation using a smart platform based on the metal organic framework. Bimetallic porous Mn/Co oxide nanosheets (MnCoO-NSs) were synthesized through a simple, one-step hydrothermal process under mild conditions. A versatile “one-stone-two-birds” strategy was employed to create nanosheets rich in oxygen vacancies. These vacancies facilitate the activation of O2, generating the primary reactive intermediate, O2^•− radicals. This is followed by enhanced oxidase mimetic activity commencing 3,3′,5,5′-tetramethyl-benzidine (TMB) oxidation. Rutin could induce the reduction of oxTMB and result in a noticeable blue color fading. The prepared. NSs show high sensitivity towards rutin detection with a low detection limit of 0.25 µg mL⁻¹, along with satisfactory selectivity and reliability. The linearity range was 1.0–60.0 µg mL⁻¹. This research not only introduces an efficient, non-precious metal oxidase mimic but also develops a sensitive and environmentally friendly colorimetric approach for rutin determination. The green attributes of this method are substantiated through a comprehensive evaluation, highlighting its potential for sustainable analytical applications.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116395"},"PeriodicalIF":4.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685787","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}