Science China Chemistry最新文献

{"title":"Relay C(sp3)-H bond trifluoromethylthiolation and amidation by visible light photoredox catalysis","authors":"Junheng Liu,&nbsp;Suqi Yang,&nbsp;Shunruo Yao,&nbsp;Chengjian Zhu,&nbsp;Yong Liu,&nbsp;Weipeng Li,&nbsp;Jin Xie","doi":"10.1007/s11426-024-2259-7","DOIUrl":"10.1007/s11426-024-2259-7","url":null,"abstract":"<div><p>Selective functionaliz0ation of C(sp³)–H bonds is a straightforward and practical method to construct complex molecule skeletons. In this field, direct transformation of unactivated C(sp³)–H bonds into C(sp³)–SCF₃ architectures is still a great challenge. We report a highly selective trifluoromethylthiolation of unactivated aliphatic C(sp³)–H bonds by combination of proton-coupled electron transfer (PCET) and hydrogen atom transfer (HAT) strategy. A wide range of structurally diverse alkyl trifluoromethyl sulfides are obtained. Furthermore, the use of two different photocatalysts can realize an unprecedented trifluoromethylthiolation and amidation cascade of different C(sp³)–H bonds. It can afford a good access to bifunctionalized molecules in synthetically useful yields.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"67 11","pages":"3844 - 3850"},"PeriodicalIF":10.4,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ionic solid-like conductor-assisted polymer electrolytes for solid-state lithium metal batteries","authors":"Shuaishuai Yan,&nbsp;Hao Liu,&nbsp;Xiaoxia Chen,&nbsp;Yang Lu,&nbsp;Qingbin Cao,&nbsp;Kai Liu","doi":"10.1007/s11426-024-2353-9","DOIUrl":"10.1007/s11426-024-2353-9","url":null,"abstract":"<div><p>Solid polymer electrolytes (SPEs) have attracted extensive attention by virtue of lightweight and flexible processability for solid-state lithium metal batteries (LMBs) with high energy density and intrinsic safety. However, the SPEs suffer from the trade-off effect between ionic conductivity and mechanical strength. Herein, we report an ionic solid-like conductor with high Li⁺ conductivity and good thermal stability as the conductive phase of polymer electrolytes for advanced LMBs. Using poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) as the polymer matrix, the ionic solid-like conductor can be regarded as a solid plasticizer due to its advantages of non-fluidity and non-leakage. It increases the amorphous region and the dissociation degree of lithium salts in SPEs, while minimizing the loss of mechanical properties. As a result, the Li⁺ conductivity of SPEs incorporating the ionic solid-like conductor is enhanced by four orders of magnitude compared to the blank PVDF-HFP-based electrolyte. The optimized SPE membranes can be processed as thin as 50 µm with a high Young’s modulus of 16.8 MPa, therefore ensuring stable long-term cycling of solid-state LMBs. The Li/Li symmetric cells stably cycled for more than 750 h without short circuits, and the LiFePO₄/Li solid-state batteries demonstrate excellent electrochemical performance over 350 cycles with a capacity retention of 82.5%. This work provides a new strategy for designing ionic solid-like conductors as solid plasticizers for high-performance polymer electrolytes.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"67 12","pages":"4116 - 4124"},"PeriodicalIF":10.4,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142758037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid and scalable preparation of highly quaternized polymer networks to achieve efficient simultaneous adsorption of iodide and pertechnetate","authors":"Meiyun Xu,&nbsp;Song Gu,&nbsp;Fulong Chen,&nbsp;Zhe Zhao,&nbsp;Peng Liu,&nbsp;Daoben Hua","doi":"10.1007/s11426-024-2236-1","DOIUrl":"10.1007/s11426-024-2236-1","url":null,"abstract":"<div><p>The efficient separation of fission products, such as TcO₄⁻ and I⁻, holds strategic significance for the management of radioactive wastes and environmental protection. In this study, we propose an ultrafast strategy for scalable preparation of a highly quaternized organic network to facilitate efficient and synchronous separation of iodide and pertechnetate. The network can be prepared within a few minutes at room temperature, using polyethylenimine and 1,2,4,5-tetrakis(bromomethyl)benzene as building blocks. After chlorine replacement, the network, abundantly decorated with quaternary ammonium groups (Cl@QPN), exhibits an ultrahigh positive charge density of 7.6 mmol/g. This enables the rapid and efficient enrichment of target anions through strong electrostatic Coulomb interactions. As a result, Cl@QPN exhibits significantly higher adsorption rate constants of 0.830 g/(mg min) for ReO₄⁻ (a nonradioactive surrogate of TcO₄⁻) and 0.677 g/(mg min) for I⁻ compared to other materials. Furthermore, it possesses high adsorption capacities, reaching 1,681 mg/g for ReO₄⁻ and 917.4 mg/g for I⁻. Cl@QPN also demonstrates good selectivity towards target ions and shows efficient adsorption for ⁹⁹TcO₄⁻. Additionally, Cl@QPN exhibits high dynamic processing capacities, handling up to 3,100 and 7,400 kg of simulated streams per kilogram of material for I⁻ and ReO₄⁻, respectively.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 1","pages":"337 - 349"},"PeriodicalIF":10.4,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient photocatalytic reduction of CO2 to formate by a molecular noble metal-free system","authors":"Lihua Zhang,&nbsp;Lingjing Chen,&nbsp;Huatian Shi,&nbsp;Yue Wei,&nbsp;Gui Chen,&nbsp;Tai-Chu Lau","doi":"10.1007/s11426-024-2131-8","DOIUrl":"10.1007/s11426-024-2131-8","url":null,"abstract":"<div><p>Reducing CO₂ to carbon-neutral solar fuels can not only alleviate the energy demand but also mitigate the greenhouse effect. At present, developing an efficient non-noble metal photo/electrocatalytic system for converting CO₂ to a specific product beyond CO is still a big challenge. Herein, we report a new cobalt complex bearing 2,2’-bi-1,10-phenanthroline ligand that can photocatalytically reduce CO₂ to formate (HCOO^-). Turnover number (TON) for HCOO^- up to 677 with 99% selectivity can be achieved using organic dyes purpurin as photosensitizer and 1,3-dimethyl-2-phenyl-2,3-dihydro-1<i>H</i>-benzo[d]imidazole (BIH) as sacrificial reductant in a CO₂-saturated NMP/TEA (<i>v/v</i>, 3:1) solution under visible light irradiation. Controlled potential electrolysis at -1.41 V (<i>vs</i>. Ag/AgCl) in the presence of 12 mM Et₃NHBF₄ also produced HCOO^- with Faradaic efficiency of 39%. Spectroscopic and electrochemical studies suggest that a [Co^I-H] species is the key intermediate for CO₂ reduction.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 1","pages":"152 - 156"},"PeriodicalIF":10.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enantioselective reductive conjugate alkenylation of α,β-enones with keto alkenyl acetates by nickel catalysis","authors":"Rong-De He,&nbsp;Yun-Lei Luo,&nbsp;Qiu-Quan Pan,&nbsp;Qi-Wei Yao,&nbsp;Xing-Zhong Shu","doi":"10.1007/s11426-024-2181-5","DOIUrl":"10.1007/s11426-024-2181-5","url":null,"abstract":"<div><p>Reactions involving alkenyl acetates offer cost-effective and environmentally friendly routes for alkene synthesis, yet their asymmetric variant remains elusive. Concurrently, asymmetric conjugate alkenylation predominantly centered on nucleophilic addition using alkenyl—M. This manuscript presents an asymmetric reductive conjugate alkenylation reaction involving alkenyl acetates. The method facilitates the enantioselective addition of keto alkenyl groups to α,β-enones, resulting in the formation of unsaturated diketones—a class of useful structural motifs that are challenging to access otherwise. The use of electron-rich Pyroxy ligand is essential for achieving both high reaction efficiency and enantioselectivity.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 1","pages":"157 - 162"},"PeriodicalIF":10.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Double [5]carbohelicene: facile synthesis, chiroptical properties, isomerization study, and lasing application","authors":"Peipei Liu,&nbsp;Yantong Li,&nbsp;Meng-Xiang Wu,&nbsp;Hao Kang,&nbsp;Xiao-Li Zhao,&nbsp;Lin Xu,&nbsp;Linlin Liu,&nbsp;Xiaodong Li,&nbsp;Junfeng Fang,&nbsp;Zhiwei Fang,&nbsp;Ya Cheng,&nbsp;Hai-Bo Yang,&nbsp;Huakang Yu,&nbsp;Xueliang Shi","doi":"10.1007/s11426-024-2171-4","DOIUrl":"10.1007/s11426-024-2171-4","url":null,"abstract":"<div><p>Double carbohelicenes have attracted considerable attention due to their aesthetic structures, distinct <i>π</i>-conjugation extension, inherent chirality, and intriguing optical and electronic properties. Herein, the concise <i>de novo</i> synthesis of a new double [5]carbohelicene <b>1</b> together with its chiroptical properties, isomerization process and lasing application is presented. <b>1</b> was synthesized by a simple protocol involving the formation of a 6,6′-bipentacene as the key intermediate. It is worth noting that 1 existed as two diastereomers <b>1</b>-<b><i>PP/MM</i></b> and <b>1</b>-<b><i>PM</i></b>, which were successfully isolated and unambiguously confirmed by X-ray crystallography. The optical resolution of the racemic <b>1</b>-<b><i>PP/MM</i></b> was successfully achieved by chiral-phase high-performance liquid chromatography (HPLC), and <b>1</b>-<b><i>PP</i></b> and <b>1</b>-<b><i>MM</i></b> were characterized by circular dichroism. Interestingly, it was found that <b>1</b>-<b><i>PP/MM</i></b> could be completely isomerized to <b>1</b>-<b><i>PM</i></b> upon heating, and the detailed thermodynamics and kinetics of the isomerization process were systematically investigated. <b>1</b>-<b><i>PM</i></b> exhibited deep-red luminescence with emission maximum at 723 nm and fluorescence quantum yield as high as 32.95%. Consequently, we can showcase the lasing application of <b>1</b>-<b><i>PM</i></b> by doping with epoxy resin to assemble a bottle microlaser spontaneously, which the lasing wavelength is 796.6 nm at a threshold of 0.8 mJ cm⁻². We believe that our studies, including the facile synthesis methodology, detailed isomerization studies, and lasing application, will shed some light on the design and synthesis of novel carbohelical systems with more functions.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 1","pages":"233 - 240"},"PeriodicalIF":10.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deciphering the role of mtH2O2 in hepatic ischemia-reperfusion injury mechanisms with low-background super-resolution fluorogenic probe","authors":"Bin Fang,&nbsp;Limin Wang,&nbsp;Haoqin Li,&nbsp;Jiaxin Zhang,&nbsp;Yang Ding,&nbsp;PanPan Li,&nbsp;Bo Peng,&nbsp;Hua Bai,&nbsp;Lin Li","doi":"10.1007/s11426-024-2146-9","DOIUrl":"10.1007/s11426-024-2146-9","url":null,"abstract":"<div><p>Hepatic ischemia-reperfusion injury (HIRI) is characterized by mitochondrial dysfunction and oxidative stress. Monitoring mitochondrial hydrogen peroxide (mtH₂O₂) levels in real-time through super-resolution imaging is crucial for elucidating its distribution in live cells and its mechanism of action during HIRI. However, low-background fluorogenic probes have been overlooked in the context of super-resolution imaging. In this study, we developed a low-background fluorogenic probe (<b>Mito-WG</b>) with the potential for super-resolution morphology-correlated mitochondrial identification to track the fluctuates of mtH₂O₂ in HIRI. Activation of the desirable fluorescence properties of the probe by mtH₂O₂ was confirmed using structural illumination microscopy (SIM), enabling high-quality mitochondrial imaging with exceptional specificity and sensitivity. Fluctuations in mtH₂O₂ levels were successfully observed in both cellular and rat models of HIRI. Furthermore, we associated the decline in mitochondrial redox homeostasis with accelerated mtH₂O₂ production during HIRI, which triggered mitophagy deficiency and led to cell death. In conclusion, <b>Mito-WG</b> possesses excellent photophysical and low-background properties for SIM imaging, making it a promising tool for mtH₂O₂ tracking in HIRI research and clinical diagnosis.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 1","pages":"297 - 307"},"PeriodicalIF":10.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tumor inflammation-specific self-amplifying fluorescent molecular probes induce an anti-tumor immune response","authors":"Shuguang Yang,&nbsp;Lijun Hu,&nbsp;Hong Xiao,&nbsp;Zecong Xiao,&nbsp;Xintao Shuai","doi":"10.1007/s11426-024-2130-1","DOIUrl":"10.1007/s11426-024-2130-1","url":null,"abstract":"<div><p>Enhancing the concentration of exogenous molecular drugs within the tumor microenvironment through enzyme-catalyzed polymerization presents a novel strategy for cancer therapy. Nonetheless, the optimization of the catalytic efficiency is often impeded by the inefficient expression of enzymes. Herein, we reported a self-amplifying fluorescent molecular probe, Bis-HTP-ICG, for photodynamic therapy (PDT) and subsequent PDT-induced immunoreaction. The Bis-HTP-ICG probe possesses a noticeable enzyme-catalyzed polymerization facilitated by myeloperoxidase (MPO), a crucial enzyme secreted by neutrophils at inflammation sites. Upon exposure to laser irradiation, Bis-HTP-ICG showed a high PDT efficacy, inducing an acute inflammatory response that stimulates further recruitment of neutrophils and then elevated MPO secretion. The heightened level of MPO enhances the accumulation of the Bis-HTP-ICG via self-polymerization or binding with intratumoral proteins following MPO enzyme catalysis, instigating a self-amplifying chain reaction cycle involving Bis-HTP-ICG, neutrophils and MPO. Meanwhile, PDT efficiently incites immunogenic cell death (ICD) in tumor cells, initiating an anti-tumor immune response including dendritic cells (DCs) maturation, T cell proliferation and reprogramming of tumor-associated neutrophils (TANs). This work portrays a promising strategy for self-amplification of fluorescent molecular probes through adjustable enzyme levels, potentially offering a unique avenue to enhance the tumor accumulation of molecular drugs for improved tumor therapy.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 1","pages":"273 - 287"},"PeriodicalIF":10.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transforming waste particles into valuable adsorbents via amyloid-mediated molecular engineering","authors":"Qingmin Yang,&nbsp;Jian Zhao,&nbsp;Yujia Zhang,&nbsp;Xingyu Zhou,&nbsp;Hao Ren,&nbsp;Bowen Hu,&nbsp;Zhongli Lei,&nbsp;Lixin Chen,&nbsp;Peng Yang","doi":"10.1007/s11426-024-2164-x","DOIUrl":"10.1007/s11426-024-2164-x","url":null,"abstract":"<div><p>The high-value utilization of industrial solid waste using a facile and eco-friendly process is of great interest and significance in reducing environmental pollution and developing a green circular economy. Herein, we propose an amyloid-mediated molecular engineering strategy to transform particulate waste into valuable adsorbents for metal ions. Our method has the advantage of aqueous solution fabrication under mild conditions without the use of high-temperature hydrothermal methods and toxic chemical reagents. Amyloid-mediated molecular engineering manipulates the phase transition of bovine serum albumin (BSA) on particulate waste surfaces, resulting in a remarkable ~3.1 times improvement in the adsorption capacity of fly ash, a typical industrial solid waste for gold ions after modification with the phase-transitioned BSA (PTB). The resultant adsorption ability was 69–1,980 times higher than those of conventional and emerging adsorbent materials such as ion exchange resins, activated carbon (AC), covalent organic frameworks (COFs), and metal-organic frameworks (MOFs). We further demonstrated the application of our PTB-modified materials in the recovery of precious metals from low-grade gold ore and electronic waste leachates. Consequently, this strategy could increase the value of waste materials nearly 27 times. In addition, this method is generally extendable to other conventional industrial adsorbents such as resin, clay, and Al₂O₃, and enhances their adsorption capabilities at least twofold. Overall, this work provides a simple and green approach for improving the adsorption performance of solid particles, and is expected to develop into a universal strategy for transforming waste particles into high-value-added products.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 1","pages":"317 - 328"},"PeriodicalIF":10.4,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Progress of photocatalytic CO2 reduction toward multi-carbon products","authors":"Jiaojiao Fang,&nbsp;Chengyang Zhu,&nbsp;Huiling Hu,&nbsp;Jiaqi Li,&nbsp;Licheng Li,&nbsp;Haiyan Zhu,&nbsp;Junjie Mao","doi":"10.1007/s11426-024-2148-2","DOIUrl":"10.1007/s11426-024-2148-2","url":null,"abstract":"<div><p>The photocatalytic CO₂ reduction reaction (CO₂RR) represents a promising solution to alleviate environmental and energy issues stemming from CO₂ emissions while simultaneously enabling the production of high-value multi-carbon fuels. However, the efficient generation of multi-carbon products remains challenging due to high kinetic barriers, sluggish C–C coupling processes, and intricate reaction pathways. This review provides a comprehensive overview of the latest advancements in synthesizing C₂₊ products through CO₂ photoreduction, highlighting the crucial role of active site design and the C–C coupling mechanism. Specifically, we emphasize the correlation between the structure of active sites and the key intermediates of C–C coupling, which is fundamental for achieving deep photoconversion of CO₂. Finally, we offer a glimpse into future challenges and prospects, outlining potential directions for the development of CO₂-to-multicarbon photoconversion, aiming to contribute novel insights to this exciting field.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"67 12","pages":"3994 - 4013"},"PeriodicalIF":10.4,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}