Journal of Materials Chemistry C最新文献

{"title":"Correction: Charge transfer properties of novel linear carbon chain-based dyes","authors":"Giuseppe Consiglio, Adam Gorczyński, Salvatore Petralia and Giuseppe Forte","doi":"10.1039/D4TC90100B","DOIUrl":"https://doi.org/10.1039/D4TC90100B","url":null,"abstract":"<p >Correction for ‘Charge transfer properties of novel linear carbon chain-based dyes’ by Giuseppe Consiglio <em>et al.</em>, <em>J. Mater. Chem. C</em>, 2024, <strong>12</strong>, 903–912, https://doi.org/10.1039/D3TC03740A.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 43","pages":" 17704-17704"},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/tc/d4tc90100b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of a high-efficiency hydrogen generation Pd/C3N5-K,I photocatalyst through synergistic effects of planar and spatial carrier separation†","authors":"Yanan Gao, Jingjing Wang, Jingxuan Yang, Yajie Wang, Wenjuan Tian and Bin Liu","doi":"10.1039/D4TC03914A","DOIUrl":"https://doi.org/10.1039/D4TC03914A","url":null,"abstract":"<p >Nitrogen-rich graphitic carbon nitride (g-C<small>₃</small>N<small>₅</small>) has garnered significant attention in photocatalytic hydrogen production due to its unique physicochemical properties. However, g-C<small>₃</small>N<small>₅</small> faces persistent challenges stemming from rapid carrier recombination. In this study, we successfully synthesized a Pd/C<small>₃</small>N<small>₅</small>-K,I photocatalyst through sequential doping of non-metallic heteroatoms and metal nanoparticles. The Pd/C<small>₃</small>N<small>₅</small>-K,I photocatalyst demonstrates a remarkable enhancement in the photocatalytic H<small>₂</small> evolution rate (2.9 mmol g<small>⁻¹</small> h<small>⁻¹</small>), approximately 14 times higher than that of pure g-C<small>₃</small>N<small>₅</small> (0.2 mmol g<small>⁻¹</small> h<small>⁻¹</small>). Characterization and calculation analyses reveal that iodine doping into the g-C<small>₃</small>N<small>₅</small> skeleton leads to the formation of planar C–I bonds, facilitating C<small>₃</small>N<small>₅</small> layer electron–hole pair separation. The subsequent insertion of Pd nanoparticles between the layers leads to electron accumulation on C<small>₃</small>N<small>₅</small>-K,I, while resulting in hole concentration on Pd nanoparticles, thereby facilitating thorough spatial separation of electron–hole pairs. The strategic co-doping of iodine and palladium nanoparticles effectively restrains carrier recombination of g-C<small>₃</small>N<small>₅</small> by connecting intra- and inter-layer interactions. This study constitutes a novel conceptual framework for CN-based photocatalysts, offering a promising approach to improve their performance in hydrogen production applications.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 295-305"},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carrier relaxation and exciton dynamics in chemical-vapor-deposited two-dimensional hybrid halide perovskites†","authors":"Dallar Babaian, Daniel Hill, Ping Yu and Suchismita Guha","doi":"10.1039/D4TC03014A","DOIUrl":"https://doi.org/10.1039/D4TC03014A","url":null,"abstract":"<p >Chemical vapor deposition (CVD), without the use of any solvents, is a viable option for the growth of high-quality two-dimensional (2D) Ruddlesden–Popper-type hybrid halide perovskite films. Insights into carrier relaxation and exciton dynamics are crucial for the application of such 2D perovskite films in optoelectronics. By employing broadband transient absorption (TA) spectroscopy and time-resolved photoluminescence, we compare the carrier relaxation and exciton dynamics in two prototypical 2D lead-iodide perovskite systems with butylammonium (BA) and phenylethylammonium (PEA) cations grown by CVD. Along with neat 2D perovskite films, heterojunctions with tin oxide layers were also investigated. The TA peaks show differences in the lifetime and evolution between the two perovskite films and their heterojunction counterparts, providing valuable insights into the structural disparities between these perovskites and the underlying factors governing excitonic dynamics. The TA peak at 530 nm decays faster in PEA<small>₂</small>PbI<small>₄</small> compared with BA<small>₂</small>PbI<small>₄</small> highlighting the role of the organic cation and the polaronic nature of this peak. Fast carrier cooling times of 150 fs, signaling the absence of any phonon bottleneck effect, are observed. The decay dynamics of the band-edge bleach reveal a strong contribution from the Auger recombination process at early times, when the system is far from equilibrium.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 193-202"},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/tc/d4tc03014a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the dynamics of phase-transition from ferroelectric to relaxor behavior in Nd-doped BNT-based lead-free piezoelectric ceramics","authors":"Jaegyeong Eom, Gwangseop Lee, Mohsin Saleem, Masaya Ichimura, Muhammad Zubair Khan, Muhammad Bilal Hanif, Rizwan Ahmed Malik and Jung-Hyuk Koh","doi":"10.1039/D4TC03664F","DOIUrl":"https://doi.org/10.1039/D4TC03664F","url":null,"abstract":"<p >In this study, lead-free 0.852Bi<small>_0.5</small>Na<small>_0.5</small>TiO<small>₃</small>−0.12Bi<small>_0.5</small>K<small>_0.5</small>TiO<small>₃</small>−0.028BaTiO<small>₃</small> (BNKBT 85.2/12/2.8) ceramics were synthesized using the conventional mixed oxide method, with Nd<small>³⁺</small> doping at concentrations of 0.00, 0.25, 0.50, 0.75, 1.00, and 2.00 mol%. The research focused on the phase transition from ferroelectric to relaxor and the associated electromechanical properties. X-ray diffraction (XRD) analysis confirmed the successful incorporation of Nd<small>³⁺</small> into the lattice, forming a perovskite phase and indicating the coexistence of multiple phases in the morphotropic phase boundary (MPB) region. The transition from ferroelectric to relaxor was observed in the polarization–electric field (<em>P</em>–<em>E</em>) and strain–electric field (<em>S</em>–<em>E</em>) loops. Pure samples exhibited ferroelectric behavior, with a relatively square <em>P</em>–<em>E</em> loop and a butterfly-shaped <em>S</em>–<em>E</em> loop. At 0.5 mol% Nd<small>³⁺</small>, a pinched <em>P</em>–<em>E</em> loop and a significant negative strain in the <em>S</em>–<em>E</em> loop were observed. At 2.0 mol% Nd<small>³⁺</small>, the ceramics demonstrated relaxor characteristics, with a thin <em>P</em>–<em>E</em> loop and minimal negative strain in the <em>S</em>–<em>E</em> loop. The optimal piezoelectric coefficient (<em>d</em><small>₃₃</small>), remnant polarization (<em>P</em><small>_r</small>), and dielectric constant (<em>ε</em><small>_r</small>) were found at 0.5 mol% Nd<small>³⁺</small>, reaching 243 pC N<small>⁻¹</small>, 36.61 μC cm<small>⁻²</small>, and 1814.54, respectively. The highest <img> value of 761 pm V<small>⁻¹</small> was observed at 2.0 mol% Nd<small>³⁺</small>, indicating dominant relaxor behavior. This study highlights the significant influence of Nd<small>³⁺</small> doping on the phase transition and electromechanical properties of BNKBT ceramics, underscoring their potential as lead-free alternatives for sensor and actuator applications.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 48","pages":" 19463-19475"},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving voltage and quantum efficiency in blade-coated ITO-free organic solar cells processed with a non-halogenated solvent†","authors":"Cuifen Zhang, Zheng Li, Yi Lin, Zhibo Wang, Huawei Hu, Ming Wang, Zheng Tang and Zaifei Ma","doi":"10.1039/D4TC02821J","DOIUrl":"https://doi.org/10.1039/D4TC02821J","url":null,"abstract":"<p >Developing ITO-free device structures, industrially compatible, and environmentally friendly fabrication processes is crucial for advancing organic solar cells (OSCs) technology toward commercialization. This study investigates the performance differences of ITO-free OSCs based on PM6:Y6, fabricated using three methods: spin-coating with chloroform (CF) solution, spin-coating with <em>o</em>-xylene (OXY) solution, and blade-coating with OXY solution. The findings reveal that the active layer prepared by blade-coating with OXY solution exhibits greater donor–acceptor phase separation and poorer molecular packing compared to the spin-coated CF solution, resulting in reduced exciton dissociation efficiency and inferior charge carrier transport. Additionally, the active layer blade-coated from OXY solution presents a higher density of trap states, leading to increased trap-assisted recombination, lower electroluminescence quantum efficiency (EQE<small>_EL</small>), and higher non-radiative voltage losses, which restrict the open-circuit voltage (<em>V</em><small>_OC</small>) of the devices. To mitigate these performance losses, we introduce an acceptor side chain modification strategy to improve the morphology and structural order of the active layer, thereby enhancing exciton dissociation efficiency and reducing the density of trap states. This results in significant improvements in both short-circuit current density (<em>J</em><small>_SC</small>) and <em>V</em><small>_OC</small>. Using the Y6DT acceptor as an example, the performance of ITO-free OSCs fabricated by blade-coating with OXY solution deliver a power conversion efficiency (PCE) of 13.5%.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 345-355"},"PeriodicalIF":5.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anti-swelling hydrogels via metal coordination network for underwater motion sensors and wireless electronic devices","authors":"Youcheng Huang, Chenguang Kong, Cunzhi Li, Xiaobin Li, Jun Shi, Hangzhou Wang, Shumin Jiang, Xiaoyan Xiong, Kun Wu and Li Yang","doi":"10.1039/D4TC03201B","DOIUrl":"https://doi.org/10.1039/D4TC03201B","url":null,"abstract":"<p >Hydrogel-based wearable electronic devices have received growing interest in recent years. However, swelling of hydrogels in an aquatic environment dramatically diminishes their mechanical and electrical properties, thus hampering the practical applications. The construction of underwater strain sensors is a considerable challenge. In this study, we report a strategy to introduce the metal coordination network into the PVA network and successfully prepare an anti-swelling gel material. The anti-swelling property (equilibrium swelling ratio of 0% after 8 d in water) is achieved by the grafting of poly(Cu–arylacetylide) chains and the introduction of the metal–ligand network. Compared with PVA hydrogel, the tensile strength of the s anti-swelling hydrogel increased from 10 kPa to 139 kPa, the elongation at break increased from 133% to 341%, and the Young's modulus increased from 10 kPa to 18 kPa. Notably, the hydrogel can retain 88% of its initial toughness after 20 d of immersion in an aquatic environment. The anti-swelling hydrogel has good reliability in detecting small and large strains. On this basis, a strain sensor is further developed, which has high sensitivity in monitoring movement in air and underwater. Moreover, hydrogel-based wireless electronic devices are also developed, demonstrating their promise for communication in complex water environments. It is believed that the design of our anti-swelling hydrogel will provide the impetus for expanding the application of wearable electronic devices.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 47","pages":" 19281-19295"},"PeriodicalIF":5.7,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Achievement of high ionic conductivity and electrochemical stability by W/Sn-doped Na3SbS4 conductors designed for all-solid-state sodium-ion batteries†","authors":"Tao Huan, Jingxuan Yin, Yu Shen, Jingxin Lu, Chengwei Gao, Yongxing Liu, Shixun Dai, Changgui Lin, Xianghua Zhang, Hongli Ma, Xiang Shen and Qing Jiao","doi":"10.1039/D4TC03109A","DOIUrl":"https://doi.org/10.1039/D4TC03109A","url":null,"abstract":"<p >All-solid-state sodium-ion batteries are emerging as a highly promising substitute for lithium-ion batteries, primarily owing to their rich natural resources and superior safety performance. Solid electrolytes are integral components of all-solid-state batteries and have attracted much attention due to their remarkable safety and chemical stability. This study examines a novel solid electrolyte Na<small>₃</small>(WSn)<small>_<em>x</em></small>Sb<small>_{1−2<em>x</em>}</small>S<small>₄</small> by modifying the W/Sn ratio and achieves a high ionic conductivity of 11.3 mS cm<small>⁻²</small> at room temperature. Structural analysis demonstrates that the inclusion of tungsten facilitates the formation of cubic phase Na<small>₃</small>SbS<small>₄</small> by more sodium vacancies. Furthermore, the co-dopant Sn ensures pure cubic conductors by removing impurities WS<small>₂</small> and increasing the element solubility. This efficiently enhances the movement of sodium ions and promotes ion transportation. The W/Sn-optimized Na<small>₃</small>SbS<small>₄</small> (NBS) electrolyte also exhibited stable cycling for about 323 hours, which is about eight times longer than the Na<small>₃</small>SbS<small>₄</small> base electrolyte. The efficient enhancement of the critical current density demonstrated the improvement of the structural stability at the interface where sodium dendrites formed easily. The formed Na–Sn alloy provides a protective barrier for the normal transport of ions. In addition, the small release of H<small>₂</small>S also proves the stability of the electrolyte structure. These characteristics make it a highly promising electrolyte material for all-solid-state electrolytes.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 47","pages":" 19296-19306"},"PeriodicalIF":5.7,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ternary afterglow and dynamic anti-counterfeiting applications of self-activated zinc germanate†","authors":"Tianyu Hu, Jie Yu, Qiqi Zeng, Cong Zhang, Yuanjie Teng, Kang Shao and Zaifa Pan","doi":"10.1039/D4TC04090B","DOIUrl":"https://doi.org/10.1039/D4TC04090B","url":null,"abstract":"<p >Up to now, there is still a lack of understanding of luminescence and afterglow in connection with native defects in self-activated zinc germanate (Zn<small>₂</small>GeO<small>₄</small>, abbreviated as ZGO). In this paper, a series of zinc–germanate (Zn/Ge) samples with various ratios were prepared <em>via</em> a high temperature solid-state method under different sintering atmospheres to analyze their self-activated luminescence characteristics. All ZGO samples exhibited ternary persistent luminescence with blue (430 nm), green (530 nm), and near-infrared (NIR, 800 nm) emissions, each with different decay rates, and a NIR afterglow with higher intensity than green emission was observed for the first time in undoped ZGO materials. By studying the effects of different synthesis conditions, native luminescence linked with ternary persistent luminescence bands was discussed; consequently, a reasonable afterglow mechanism was proposed for the self-activated system. Furthermore, aliovalent Al<small>³⁺</small>-doped self-activated ZGO (abbreviated as ZAGO) showed better luminescence and afterglow properties, with yellow (632 nm) light emission enhanced by 10 times and green (530 nm) light afterglow increased by 18.5 times compared with ZGO. Finally, taking advantage of the unique yellow light and enhanced green afterglow, dynamic anti-counterfeiting applications were achieved.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 81-92"},"PeriodicalIF":5.7,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lanthanide coordinated multicolor luminescent polymeric hydrogels","authors":"Xiaoye Zhang, Haohui Wang, Wei Lu, Tao Chen and Peng Wei","doi":"10.1039/D4TC04189E","DOIUrl":"https://doi.org/10.1039/D4TC04189E","url":null,"abstract":"<p >Multicolor luminescent polymeric hydrogels (LPHs) have advanced significantly in recent years by leveraging their unique wet and soft properties that mimic those of biological skin. Their stimuli-responsive characteristics and tunable luminescence have facilitated significant advancements in responsive sensing, anti-counterfeiting technologies, and biomimetic actuators. The luminescent groups of LPHs primarily include organic fluorophores, fluorescent proteins, lanthanide complexes, and luminescent nanoparticles. Notably, lanthanide ion coordination luminescence is distinguished by high quantum efficiency, narrow emission bands, superior color purity, and photostability, thereby positioning it as a crucial component in multicolor LPHs. However, the low absorption coefficients of lanthanide ions in the visible and ultraviolet regions restrict their intrinsic luminescence. Coordinating these ions with organic compounds that have high absorption coefficients facilitates energy transfer, thereby enhancing the emission of the lanthanide ions. This review systematically classifies lanthanide-coordinated multicolor LPHs according to synthesis strategies, including physically mixed, chemically covalently grafted, and self-assembled supramolecular LPHs. Finally, this review addresses the current challenges and future prospects in this field, aiming to garner increased interest from interdisciplinary researchers.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 45","pages":" 18201-18210"},"PeriodicalIF":5.7,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonvolatile electrical control of the electronic and valleytronic properties by ferroelectricity in the VSi2P4/Al2S3 van der Waals heterostructure†","authors":"Shoubao Zhang, Na Jiao, Hongyan Lu, Mengmeng Zheng, Ping Zhang and Meiyan Ni","doi":"10.1039/D4TC03592E","DOIUrl":"https://doi.org/10.1039/D4TC03592E","url":null,"abstract":"<p >In this paper, based on first-principles theory, we investigated the properties of the multiferroic VSi<small>₂</small>P<small>₄</small>/Al<small>₂</small>S<small>₃</small> van der Waals (vdW) heterostructure (HS), in which VSi<small>₂</small>P<small>₄</small> and Al<small>₂</small>S<small>₃</small> are ferromagnetic (FM) and ferroelectric (FE) materials, respectively. Our results show that the properties of the VSi<small>₂</small>P<small>₄</small> layer can be effectively manipulated by reversing the ferroelectric polarized state of the Al<small>₂</small>S<small>₃</small> layer (P↑ and P↓). Specifically, for P↓ Al<small>₂</small>S<small>₃</small>, VSi<small>₂</small>P<small>₄</small> preserves the semiconductor nature and the intrinsic valley polarization in the conduction band. However, for P↑ Al<small>₂</small>S<small>₃</small>, the VSi<small>₂</small>P<small>₄</small> sublayer is changed to a half-metal, and the valley polarization in the conduction band is submerged in trivial bands. Our findings provide an effective way for nonvolatile electrical control of the electronics and valleytronics of 2D ferromagnetic materials.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 306-313"},"PeriodicalIF":5.7,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}