Nano Letters最新文献

High Current Gain MoS2 Bipolar Junction Transistor Based on Metal–Semiconductor Schottky Contacts

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-23 DOI: 10.1021/acs.nanolett.4c04722

Shichao Wang, Qingliang Liu, Wencheng Niu, Xuming Zou, Xingqiang Liu, Jingli Wang, Jinshui Miao, Zhenyu Yang, Fukai Shan, Lei Liao

{"title":"High Current Gain MoS2 Bipolar Junction Transistor Based on Metal–Semiconductor Schottky Contacts","authors":"Shichao Wang, Qingliang Liu, Wencheng Niu, Xuming Zou, Xingqiang Liu, Jingli Wang, Jinshui Miao, Zhenyu Yang, Fukai Shan, Lei Liao","doi":"10.1021/acs.nanolett.4c04722","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04722","url":null,"abstract":"Bipolar junction transistors (BJTs) are crucial components in high-power electronic applications. However, while two-dimensional (2D) semiconductors with exceptional electrical properties have been extensively studied in field-effect transistors, their application in BJTs has received far less attention. In this study, we demonstrate high-gain MoS2 BJTs based on metal–semiconductor Schottky contacts. The emitter-base junction uses the thermal ionization properties of a Schottky diode to emit electrons, while the collector-base junction leverages the Schottky barrier to collect electrons. This design enables thermal ionization of electrons into the base region, where they are subsequently accelerated and transferred to the collector region under the influence of the collector-base junction voltage. Our MoS2 BJTs achieves a common-base current gain 0.99 and a remarkable common-emitter current gain of 1967, representing the highest performance reported for BJTs based on 2D semiconductors to date, which is comparable to traditional silicon-based BJTs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"17 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient Output and Stability Triboelectric Materials Enabled by High Deep Trap Density

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-23 DOI: 10.1021/acs.nanolett.4c05154

Yaqi Zhang, Juanxia He, Yu Gao, Bei Xu, Jianfeng Li, Kun Liu, Shuangxi Nie, Shuangfei Wang, Qingshan Duan, Dongwu Liang

引用次数: 0

Protein-Enabled Size-Selective Defect-Sealing of Atomically Thin 2D Membranes for Dialysis and Nanoscale Separations

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-23 DOI: 10.1021/acs.nanolett.4c04706

Peifu Cheng, Nicholas Ferrell, Saban M. Hus, Nicole K. Moehring, Matthew J. Coupin, Jamie Warner, An-Ping Li, William H. Fissell, Piran R. Kidambi

{"title":"Protein-Enabled Size-Selective Defect-Sealing of Atomically Thin 2D Membranes for Dialysis and Nanoscale Separations","authors":"Peifu Cheng, Nicholas Ferrell, Saban M. Hus, Nicole K. Moehring, Matthew J. Coupin, Jamie Warner, An-Ping Li, William H. Fissell, Piran R. Kidambi","doi":"10.1021/acs.nanolett.4c04706","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04706","url":null,"abstract":"Atomically thin 2D materials present the potential for advancing membrane separations via a combination of high selectivity (from molecular sieving) and high permeance (due to atomic thinness). However, the creation of a high density of precise nanopores (narrow-size-distribution) over large areas in 2D materials remains challenging, and nonselective leakage from nanopore heterogeneity adversely impacts performance. Here, we demonstrate protein-enabled size-selective defect sealing (PDS) for atomically thin graphene membranes over centimeter scale areas by leveraging the size and reactivity of permeating proteins to preferentially seal larger nanopores (≥4 nm) while preserving a significant amount of smaller nanopores (via steric hindrance). Our defect-sealed nanoporous atomically thin membranes (NATMs) show stability up to ∼35 days during size-selective diffusive separations with a model dialysis biomolecule fluorescein isothiocyanate (FITC)-Ficoll 70 in phosphate buffer saline (PBS) solution as well as outperform state-of-the-art commercially available dialysis membranes (molecular-weight-cutoff ∼3.5–5 kDa and ∼8–10 kDa) with significantly higher permeance for smaller solutes KCl (∼0.66 nm) ∼5.1–6 × 10–5 ms–1 and vitamin B12 (B12, ∼1.5 nm) ∼2.8–4 × 10–6 ms–1 compared to small protein lysozyme (Lz, ∼4 nm) ∼4–6.4 × 10–8 m s–1, thereby allowing unprecedented selectivity for B12/Lz ∼70 and KCl/Lz ∼1280. Our work introduces proteins as nanoscale tools for size-selective defect sealing in atomically thin membranes to overcome persistent issues and advance separations for dialysis, protein desalting, small molecule separations/purification, and other bioprocesses.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"3 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unraveling the Impact of Stabilizers on Nanocrystal Preparation and Oral Absorption: A Case Study of Poorly Soluble Andrographolide

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-23 DOI: 10.1021/acs.nanolett.4c05230

Bingwen Ding, Zhenting Zheng, Jianjia Su, Jieying Zhou, Shihao Xu, Wei Luo, Houlin Su, Ying Li, Wei Xiong

{"title":"Unraveling the Impact of Stabilizers on Nanocrystal Preparation and Oral Absorption: A Case Study of Poorly Soluble Andrographolide","authors":"Bingwen Ding, Zhenting Zheng, Jianjia Su, Jieying Zhou, Shihao Xu, Wei Luo, Houlin Su, Ying Li, Wei Xiong","doi":"10.1021/acs.nanolett.4c05230","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05230","url":null,"abstract":"Drug nanocrystal engineering is an attractive pharmaceutical approach to enhancing the oral bioavailability of poorly soluble drugs. The mechanism of drug nanocrystal stabilization, however, is unclear. Here we developed andrographolide nanocrystals (AG-NCs) with various nonionic surfactants (Pluronic-F127, TPGS, or Brij-S20). We detected AG micelles (AG-MCs) at an andrographolide to nonionic surfactant ratio of 10:10 (w/w) and poor AG-NC size stability. We thus quantified the unbound Pluronic-F127 in AG-NCs and found that the proposed instantaneous binding rate sharply declined with increasing Pluronic-F127 input. We determined that the saturation dose of TPGS on AG-NCs was approximately 10:10 (w/w) and recommend it as a key criterion for nanocrystal formulation. Although AG-NCs exhibited a marginally faster dissolution rate, they possessed better mucus-penetrating and transmembrane transport capacities and significantly enhanced oral absorption compared to AG-MCs. These findings give insights into the impact of a stabilizer during the preparation process and the oral absorption of drug nanocrystals.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"20 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pyrazole-Mediated On-Surface Synthesis of Nickel/Nickel Oxide Hybrids for Efficient Urea-Assisted Hydrogen Production

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-23 DOI: 10.1021/acs.nanolett.4c04826

Zhe Chen, Can Lei, Liu Xudong, Ya Li, Tao Jiang, Wei Du, Shaoyan Wang, Xuejing Yang, Ming Gong

{"title":"Pyrazole-Mediated On-Surface Synthesis of Nickel/Nickel Oxide Hybrids for Efficient Urea-Assisted Hydrogen Production","authors":"Zhe Chen, Can Lei, Liu Xudong, Ya Li, Tao Jiang, Wei Du, Shaoyan Wang, Xuejing Yang, Ming Gong","doi":"10.1021/acs.nanolett.4c04826","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04826","url":null,"abstract":"Creating densely functionalized supported materials without aggregation has been one of the ultimate goals for heterogeneous catalysts. Direct conversion of readily available bulk materials into highly dispersed supported materials could be highly beneficial for real applications. In this work, we invented an on-surface synthetic strategy for generating highly loaded and well-dispersed nickel nanoparticles on nickel oxide supports (Ni/NiO). This on-surface synthesis is a two-step process involving the surface transformation of Ni(OH)2 into a layer of chain-like nickel pyrazolate [Ni(pz)2] and an ultra-high-vacuum annealing process that evacuates the pyrazole and decomposes the Ni(OH)2 into the Ni/NiO hybrid. The highly dispersed Ni/NiO catalyst exhibited superior activities and long-term stability for both the urea oxidation reaction and the hydrogen evolution reaction, which enables efficient urea electrolysis with a single catalyst. This approach presents a novel on-surface synthetic strategy for metal oxide-supported materials and offers efficient catalysts for advanced urea-assisted hydrogen production.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"22 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

P-Type Vertical FETs Realized by Using Fermi-Level Pinning-Free 2D Metallic Electrodes

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-23 DOI: 10.1021/acs.nanolett.4c05136

Hyokwang Park, Hoseong Shin, Nasir Ali, Hyungyu Choi, Brian S. Y. Kim, Boseok Kang, Min Sup Choi, Won Jong Yoo

{"title":"P-Type Vertical FETs Realized by Using Fermi-Level Pinning-Free 2D Metallic Electrodes","authors":"Hyokwang Park, Hoseong Shin, Nasir Ali, Hyungyu Choi, Brian S. Y. Kim, Boseok Kang, Min Sup Choi, Won Jong Yoo","doi":"10.1021/acs.nanolett.4c05136","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05136","url":null,"abstract":"In two-dimensional (2D) nanomaterial electronics, vertical field-effect transistors (VFETs), where charges flow perpendicular to the channel materials, hold promise due to the ease of forming ultrashort channel lengths by utilizing the thinness of 2D materials. However, the poor performance of p-type VFET arises from the lack of a gate-field-penetrating electrode with suitable work functions, which is essential for VFET operation. This motivated us to replace graphene (work function of ∼4.5 eV) with a high-work-function electrode to achieve the desired VFET characteristics. In this study, we demonstrate that WSe2-based p-type VFETs with a high on/off ratio of ∼105 can be realized using van-der-Waals contacts formed with high-work-function 2D metals (i.e., 2H-TaS2, NbSe2, and NbS2), which form a p-type ohmic contact to the WSe2 channel by suppressing Fermi-level pinning. Furthermore, we successfully fabricate a 2D metal-incorporating pseudocomplementary FET structure, demonstrating a great potential to significantly reduce the scaling factor by dense structure and vertical operation.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"53 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ru–OH–Zr Site over Metal–Organic Frameworks Boosts Coreactant Activation for Efficient Electrochemiluminescence

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-23 DOI: 10.1021/acs.nanolett.4c04956

Weiqing Xu, Yu Wu, Xin Yu, Hengjia Wang, Ying Qin, Wenhong Yang, Liuyong Hu, Lirong Zheng, Wenling Gu, Yuehe Lin, Chengzhou Zhu

{"title":"Ru–OH–Zr Site over Metal–Organic Frameworks Boosts Coreactant Activation for Efficient Electrochemiluminescence","authors":"Weiqing Xu, Yu Wu, Xin Yu, Hengjia Wang, Ying Qin, Wenhong Yang, Liuyong Hu, Lirong Zheng, Wenling Gu, Yuehe Lin, Chengzhou Zhu","doi":"10.1021/acs.nanolett.4c04956","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04956","url":null,"abstract":"Metal–organic frameworks (MOFs) are promising electrochemiluminescent (ECL) nanoemitters. Great endeavors have been made to optimize the inherent luminescent properties, yet most MOFs suffer from poor coreactant activation ability, resulting in limited ECL. Therefore, it is urgent to integrate and design efficient catalytic centers within MOFs. Herein, we decorate atomically dispersed Ru onto the Zr-nodes of NU-1000, constructing Ru–OH–Zr centers to synergistically activate coreactants. The proposed NU-Ru enables 7.8 times enhancement in ECL efficiency. Theoretical investigations reveal that Ru atoms with strong electronegativity not only accelerate the charge transfer but also provide superior Lewis acid sites for promoting peroxysulfate binding and activation. Assisted by Bro̷nsted acid groups, the Ru–OH–Zr centers efficiently split the O–O bonds to enrich radicals through a proton-coupled electron transfer process. Furthermore, a direct mode sensor was established for sensitive organophosphorus pesticide analysis based on the interaction between the P═O bond and Lewis acid sites.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"39 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Orientation-Enhanced Interlayer Enables Efficient Sn–Pb Binary Perovskite Solar Cells and All-Perovskite Tandem Solar Cells with High Fill Factors

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-23 DOI: 10.1021/acs.nanolett.4c04652

Ruitian Sun, Pengshuai Wang, Tao Wang, Lin Zhang, Zhizhong Ge, Liang Qiao, Tianshi Ye, Fan Li, Weijun Liu, Yanjie Wen, Xudong Yang

{"title":"An Orientation-Enhanced Interlayer Enables Efficient Sn–Pb Binary Perovskite Solar Cells and All-Perovskite Tandem Solar Cells with High Fill Factors","authors":"Ruitian Sun, Pengshuai Wang, Tao Wang, Lin Zhang, Zhizhong Ge, Liang Qiao, Tianshi Ye, Fan Li, Weijun Liu, Yanjie Wen, Xudong Yang","doi":"10.1021/acs.nanolett.4c04652","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04652","url":null,"abstract":"The performance of narrow-bandgap (NBG) perovskite solar cells (PSCs) is limited by the severe nonradiative recombination and carrier transport barrier at the electron selective interface. Here, we reveal the importance of the molecular orientation for effective defect passivation and protection for Sn2+ at the perovskite/C60 interface. We constructed an internally self-anchored dual-passivation (ISADP) layer, where the orientation of PCBM can be significantly enhanced by the interaction between ammonium and carbonyl groups. It can facilitate the contact with C60 and minimize the nonradiative energy loss at the electron transport interface. This strategy remarkably enhances the FF of NBG PSCs, from 77.45% to 82.88%, and the power conversion efficiency (PCE) from 20.67% to 24.02%. Moreover, monolithic all-perovskite TSCs exhibit a high certified PCE (under reverse scan) of 28.12% and a record FF of 84.25%. This work opens up a new pathway for enhancing the performance of monolithic all-perovskite TSCs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"14 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mild Focused Ultrasound-Induced Microscopic Heating of Nanoparticles Observed by Lanthanide Luminescence for Precise Sonothermal Cancer Therapy

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-22 DOI: 10.1021/acs.nanolett.4c05175

Lingkai Meng, Sixin Xu, Qian Hu, Hao Wang, Pengrui Wang, Ruotong Li, Yifeng Zhang, Tiange Shi, Na Kong, Xingjun Zhu

{"title":"Mild Focused Ultrasound-Induced Microscopic Heating of Nanoparticles Observed by Lanthanide Luminescence for Precise Sonothermal Cancer Therapy","authors":"Lingkai Meng, Sixin Xu, Qian Hu, Hao Wang, Pengrui Wang, Ruotong Li, Yifeng Zhang, Tiange Shi, Na Kong, Xingjun Zhu","doi":"10.1021/acs.nanolett.4c05175","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05175","url":null,"abstract":"Focused ultrasound (FUS) is a recognized tool that can be used clinically for the thermal ablation of tumors. However, excessive heat can cause side effects on the ultrasound transmission path and normal tissues around the tumor. To address the issue, this work detected for the first time the effect of microscopic heating of nanoparticles under the action of FUS through the luminescence intensity ratio (LIR) and luminescence lifetime of temperature-responsive lanthanide-doped nanoparticles. When FUS is applied to the tissue embedded with nanoparticles, the increase in the microscopic temperature of the nanoparticles synchronously monitored by LIR is more obvious than the increase in the macroscopic temperature. Based on this phenomenon, the intensity of focused ultrasound can be finely regulated to avoid overheating while ensuring a therapeutic effect. This work achieves the measurement of the microscopic heating of nanoparticles under FUS, which is of great significance for the development of sonothermal cancer therapy.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"1 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Breaking the Spin-Forbidden Restriction to Achieve Long Lifetime Room-Temperature Phosphorescence of Carbon Dots

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-20 DOI: 10.1021/acs.nanolett.4c05187

Zengsheng Guo, Fangzheng Qi, Juan Dong, Jingtian Xue, Yilei Wang, Bo Xu, Guang-Ning Liu, Yiqiang Sun, Cuncheng Li

{"title":"Breaking the Spin-Forbidden Restriction to Achieve Long Lifetime Room-Temperature Phosphorescence of Carbon Dots","authors":"Zengsheng Guo, Fangzheng Qi, Juan Dong, Jingtian Xue, Yilei Wang, Bo Xu, Guang-Ning Liu, Yiqiang Sun, Cuncheng Li","doi":"10.1021/acs.nanolett.4c05187","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05187","url":null,"abstract":"Room-temperature phosphorescent (RTP) carbon dots (CDs) demonstrate significant potential applications in the field of information anticounterfeiting due to their excellent optical properties. However, RTP emission of CDs remains significantly limited due to the spin-forbidden properties of triplet exciton transitions. In this work, an in situ nitrogen doping strategy was employed to design and construct strong spin–orbit coupling nitrogen-doped CDs with mesoporous silica with alumina (N-CDs@MS@Al2O3) RTP composites. Both experimental results and theoretical calculations confirmed that the formation of 1(n, π*) following the introduction of nitrogen breaks the spin-forbidden restriction from 1(π, π*) to 3(π, π*), thereby enhancing spin–orbit coupling, which further promotes intersystem crossing and leads to the effective population of triplet excitons. The designed N-CDs@MS@Al2O3 benefiting from an impressive long lifetime of 3.18 s demonstrates potential application prospects in the field of multilevel information encryption. This work provides a new concept to boost the RTP lifetime of CDs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"261 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0