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Organic Brønsted Acid-Catalyzed Stereoselective Cationic RAFT Polymerization:The Effect of RAFT Agents

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Chinese Journal of Polymer Science 2024年第6期42卷 711-717页

作者： Zheng-yi Zhang Zan Yang Yun liao Sai-Hu liao Key Laboratory of Molecule Synthesis and Function Discovery(Fujian Province University) College of ChemistryFuzhou UniversityFuzhou350108China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China Beijing National Laboratory for Molecular Sciences Beijing100190China

The tacticity of vinyl polymers is a key factor affecting the properties of ***,organic Brønsted acids have been demonstrated as effective catalysts for the development of highly stereoselective cationic reversible addition-fragmentation chain transfer(RAFT)polymerizations of vinyl ethers,in which the use of RAFT agents could allow the control the molecular weight and tacticity of polymer products ***,the effect of RAFT agents on the tacticity-regulation remains elusive and lacks of *** this study,we synthesized four types of RAFT agents and evaluated their influence in the stereoselective cationic polymerization of isobutyl vinyl ether in the presence of PADI as a Brønsted acid catalyst,which unveils that the Z group of RAFT agents could not only affect the polydispersity of the products,but also exert a profound effect on the *** extensive screening of the RAFT agents,high stereoregularity(isotacticity,90%m)was obtained when using dithiocarbonate ester-type RAFT agents with a benzyloxy Z group.

关键词： Bronsted acid catalysis Stereoselective cationic polymerization RAFT polymerization Chain transfer agents Tacticity

Combination of transarterial radioembolization with atezolizumab and bevacizumab for intermediate and advanced staged hepatocellular carcinoma:A preliminary report of safety and feasibility

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Journal of Interventional Medicine 2023年第4期6卷 186-192页

作者： Qian Yu Yating Wang Ethan Ungchusri Mikin Patel Divya Kumari Thuong Van Ha Anjana Pillai chih-yi liao Osman Ahmed Department of Radiology University of Chicago Medical CenterUniversity of ChicagoChicagoIL60637USA Hematology and Oncology Ascension Providence HospitalSouthfieldMI48075USA Division of Gastroenterology Hepatologyand NutritionDepartment of MedicineUniversity of Chicago Medical CenterUniversity of ChicagoChicagoIL60637USA Hematology and Oncology Department of MedicineUniversity of Chicago Medical CenterUniversity of ChicagoChicagoIL60637USA

Purpose:The IMbrave150 PhaseⅢtrial demonstrated superiority of atezolizumab and bevacizumab(Atezo/Bev)over sorafenib for unresectable hepatocellular carcinoma(HCC).The present study aims to evaluate the feasibility of TARE in combination with Atezo/Bev for treatment of intermediate and advanced staged ***:Retrospective review at a single institution was performed between May 2021 and December *** who received TARE using yttrium-90(Y90)with concomitant or sequential Atezo/Bev systemic treatment were *** following outcomes were retrieved:overall survival(OS),radiologic tumor response,progression-free survival,technical adverse events related to TARE,and toxicity based on the National Cancer Institute–Common Terminology Criteria for Adverse Events version ***:Ten consecutive patients with intermediate(n=4)and advanced stage HCC(n=6)were treated with TARE and sequential/concomitant Atezo/*** control was achieved in all TARE-treated target lesions(100%).Overall disease progression occurred in 4 patients with PFS of 78.8%and 66.7%at 6-and 12-months,*** patients died at follow-up,with 6-month and 12-month OS rates of 90.0%and 77.1%,***(75%)patients with intermediate stage disease were downstaged into Milan *** patient developed grade 3 transaminitis and hypoglobulinemia,while Atezo/Bev was switched to Lenvatinib in another patient due to immunotherapy related ***:This study demonstrates initial safety and feasibility of combined TARE with Atezo/Bev for intermediate/advanced stage *** prospective studies with larger sample size are warranted.

关键词： Hepatocellular carcinoma Immunotherapyc Radioembolization Yttrium-90

Regulation of rhizosphere microenvironment by rice husk ash for reducing the accumulation of cadmium and arsenic in rice

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Journal of Environmental Sciences 2024年第2期136卷 1-10页

作者： yi Jiang Ya Liu Xuantao yi Peng Zeng Bohan liao Hang Zhou Jiaofeng Gu College of Environmental Science and Engineering Central South University of Forestry and TechnologyChangsha 410004China Hunan Engineering Laboratory for Control of Rice Quality and Safety Changsha 410004China

It is important to reduce Cd and As content in brown rice in contaminated paddy *** conducted research on the effects of rice husk ash (RHA) on the Cd and As in the rhizosphere microenvironment (soil,porewater,and iron plaque) and measured the Cd,As,and Si content in rice *** main elements in RHA were Si (29.64%) and O (69.17%),which had the maximum adsorption capacity for Cd was 42.49 mg/kg and for As was 18.62 mg/*** pH and available Si content increased,while soil available Cd and As decreased following application of 0.5%–2%*** promote the transformation of Cd to insoluble fraction,while As was transformed from a poorly soluble form to a more active *** reduced Cd content and increased Si content in porewater,and reduced As only at the later rice growth *** increased the amount of iron plaque,thereby decreasing the Cd content in iron plaque,while increased the As content in *** and inorganic As content in brown rice were decreased,to 0.31 mg/kg and 0.18 mg/kg,*** decrease of Cd in brown rice was due to the decrease of Cd mobility in soil,thereby reducing root accumulation,while the decrease of As in brown rice was affected by the transport from roots to ***,RHA can be considered as a safe and efficient in-situ remediation amendment for Cd and As co-contaminated paddy soil.

关键词： Rice husk ash(rha) Cadmium Arsenic Silicon Rice Soil

Metastatic well-differentiated pancreatic neuroendocrine tumors to the liver: a narrative review of systemic and surgical management

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Journal of Pancreatology 2021年第2期4卷 82-89页

作者： Tanaz Vaghaiwalla Kelvin Memeh chih-yi liao Xavier M.Keutgen Department of Surgery Division of General SurgeryUniversity of Tennessee Graduate School of MedicineKnoxvilleTN b Department of Surgery Division of Surgical OncologyEndocrine Surgery Research ProgramUniversity of Chicago Medicine Department of Medicine Section of Hematology and OncologyUniversity of Chicago MedicineChicagoILUSA

Pancreatic neuroendocrine tumors(PNETs)are a rare group of neoplasms originating from the endocrine *** are classified as functional or non-functional *** are more often diagnosed at a higher stage with distant metastases or advanced locoregional *** majority of individuals with hepatic metastases will ultimately die of liver failure;therefore,the treatment of liver tumor burden is critical to providing a survival *** surgical resection remains the only chance of cure for disease confined to the pancreas or for locoregional disease,the treatment of advanced or metastatic PNETs is more complex and often requires a multimodal *** review focuses on treatment options for well and moderately differentiated PNETs with metastatic disease to the *** include surgery,liver-directed therapies including ablative and intra-arterial therapies,and systemic therapies such as somatostatin analogues,targeted therapies,chemotherapy,and peptide receptor radionuclide *** an individualized treatment strategy requires careful assessment of liver tumor burden and predicted biological *** surgical resection of hepatic metastases secondary to PNET primary tumors is associated with improved survival in multiple retrospective *** goals of treatment for metastatic disease include prolonging overall survival and progression free survival,improving quality of life,and control of symptoms.

关键词： Hepatic cytoreduction Metastatic disease Pancreatic neuroendocrine tumor Peptide receptor radionuclide therapy Review

Superconducting,Topological,and Transport Properties of Kagome Metals CsTi_(3)Bi_(5)and RbTi_(3)Bi_(5)

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Research 2024年第2期2023卷 753-762页

作者： Xin-Wei yi Zheng-Wei liao Jing-Yang You Bo Gu Gang Su School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Department of Physics Faculty of ScienceNational University of Singapore117551Singapore Kavli Institute for Theoretical Sciences and CAS Center for Excellence in Topological Quantum ComputationUniversity of Chinese Academy of SciencesBeijing 100190China

The recently discovered ATi_(3)Bi_(5)(A=Cs,Rb)exhibit intriguing quantum phenomena including superconductivity,electronic nematicity,and abundant topological ***_(3)Bi_(5)present promising platforms for studying kagome superconductivity,band topology,and charge orders in parallel with *** this work,we comprehensively analyze various properties of ATi_(3)Bi_(5)covering superconductivity under pressure and doping,band topology under pressure,thermal conductivity,heat capacity,electrical resistance,and spin Hall conductivity(SHC)using first-principles *** superconducting transition temperature(Tc)of CsTi_(3)Bi_(5)and RbTi_(3)Bi_(5)at ambient pressure are about 1.85 and 1.92 *** subject to pressure,Tc of CsTi_(3)Bi_(5)exhibits a special valley and dome shape,which arises from quasi-two-dimensional compression to three-dimensional isotropic compression within the context of an overall decreasing ***,Tc of RbTi_(3)Bi_(5)can be effectively enhanced up to 3.09 K by tuning the kagome van Hove singularities(VHSs)and flat band through *** can also induce abundant topological surface states at the Fermi energy(EF)and tune VHSs across ***,our transport calculations are in excellent agreement with recent experiments,confirming the absence of charge density ***,SHC of CsTi_(3)Bi_(5)can reach up to 226h·(e·Ω·cm)^(-1)at *** work provides a timely and detailed analysis of the rich physical properties for ATi_(3)Bi_(5),offering valuable insights for further experimental verifications and investigations in this field.

关键词： doping superconductivity conductivity

Monitoring Surface Deformation Using Distributed Scatterers InSAR

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Journal of Geodesy and Geoinformation Science 2024年第1期7卷 42-58页

作者： LI Haocheng DONG Jie WANG yi’an liao Mingsheng State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430079China School of Remote Sensing and Information Engineering Wuhan UniversityWuhan 430079China

In the past two decades,extensive and in-depth research has been conducted on Time Series InSAR technology with the advancement of high-performance SAR satellites and the accumulation of big SAR *** introduction of distributed scatterers in Distributed Scatterers InSAR(DS-InSAR)has significantly expanded the application scenarios of InSAR geodetic measurement by increasing the number of measurement *** study traces the history of DS-InSAR,presents the definition and characteristics of distributed scatterers,and focuses on exploring the relationships and distinctions among proposed algorithms in two crucial steps:statistically homogeneous pixel selection and phase ***,the latest research progress in this field is tracked and the possible development direction in the future is *** simulation experiments and two real InSAR case studies,the proposed algorithms are compared and verified,and the advantages of DS-InSAR in deformation measurement practice are *** work not only offers insights into current trends and focal points for theoretical research on DS-InSAR but also provides practical cases and guidance for applied research.

关键词： InSAR permanent scatterers distributed scatterers statistically homogeneous pixel selection phase optimization

Copper-coated Porous Polyimide as Ultralight and Safe Current Collectors for Advanced LIBs

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Chinese Journal of Polymer Science 2024年第4期42卷 521-531页

作者： Cun-Sheng Liu Jun-Qi Hu Ting-Ting Mao Song-yi liao Ru-Ming Feng yi-Dong Liu Yong-Gang Min School of Materials and Energy Guangdong University of TechnologyGuangzhou510006China College of Chemistry and Chemical Engineering Zhongkai University of Agriculture and EngineeringGuangzhou510225China Shanwei Branch of Advanced Energy Science and Technology Guangdong Laboratory Shanwei516600China

Metallic copper is widely used as current collector(CC) for graphite anode of lithium-ion batteries(LIBs) due to its high electrical conductivity and electrochemical stability. However, the large volume density of commercial copper foil(~8.9 g·cm^(-3)) limits the increase of energy density of battery. Here, copper-coated porous polyimide(Cu@PPI) was prepared by vacuum evaporation as collector for the graphite anode. The sandwich structure connects the copper metal on both sides of the collector with excellent electrical conductivity. Compared to commercial Cu foil, Cu@PPI has lighter mass(≤3.9 mg for disc of 12 mm diameter versus 9.9 mg of ~10 μm Cu foil) and lower volume density(≤3.3 g·cm^(-3)). In addition, the porous structure allows of better adhesion of reactive substances and electrochemical properties than pure Cu foils. It is estimated that the energy density of Cu@PPI should be much higher than that of Cu foil. This strategy should be applicable for other current collectors.

关键词： Copper-coated Vacuum evaporation Porous polyimide(PPI) Current collector(CC) LIBs

Electro-reductive carboxylation of acyclic C(sp^(3))–C(sp^(3))bonds in aromatic hydrocarbons with CO_(2)

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Science China Chemistry 2024年第10期67卷 3366-3372页

作者： Chuan-Kun Ran Quan Qu Yang-yi Tao yi-Fei Chen Li-Li liao Jian-Heng Ye Da-Gang Yu Key Laboratory of Green Chemistry&Technology of Ministry of Education College of ChemistrySichuan UniversityChengdu 610064China West China School of Public Health and West China Fourth Hospital Sichuan UniversityChengdu 610064China

Despite the recent advances in the selective functionalization of C–C bonds in specific substrates,cleavage and functionalization of C–C bonds in acyclic substrates,such as ethane derivatives,remains *** contrast to the well-developed functionalization of one carbon fragment after C–C bond cleavage,herein,we report a novel electro-reductive carboxylation of C(sp^(3))–C(sp^(3))bond in multi-aryl ethanes with carbon dioxide(CO_(2))by utilizing both carbon ***,this reaction exhibits an atom-,step-economic approach for the synthesis of carboxylic acids,fulfilling principal aspirations of organic ***,this method features mild reaction conditions,broad substrate scope,and good functional group *** and asymmetric substrates bearing primary,secondary,or tertiary C(sp^(3))–C(sp^(3))bonds are all amenable to this strategy,enabling one or two structurally different carboxylic acids to be facilely constructed at the same *** investigations indicate that carbanions might be the key intermediates in this reaction,which could be captured by CO_(2)efficiently.

关键词： carbon dioxide electrochemistry C(sp^(3))–C(sp^(3))bonds cleavage reductive carboxylation

Two birds with one stone:Functionalized wood composites for efficient photocatalytic hydrogen production and solar water evaporation

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Chinese Chemical Letters 2024年第9期35卷 392-397页

作者： Deqi Fan yicheng Tang Yemei liao Yan Mi yi Lu Xiaofei Yang College of Chemical Engineering Nanjing Forestry UniversityNanjing 210037China Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of ScienceNanjing Forestry UniversityNanjing 210037China Key Laboratory of Chemistry and Engineering of Forest Products State Ethnic Affairs CommissionGuangxi Key Laboratory of Chemistry and Engineering of Forest ProductsGuangxi Minzu UniversityNanning 530006China

Maximizing solar energy utilization is a persistent challenge in photo catalysis,which determines sustainable solar-driven photocatalytic *** thermal-coupled photo catalysis is considered as a promising solution to tackle the issues of sustainable energy scarcity and environmental pollution by harvesting the full-spectrum solar ***,a highly efficient photo thermal-accelerated photo catalysis system is elaborately established,in which the assembled carbonized stick/Nb_(2)C MXene evaporator can heat water into vapor and the integrated g-C_(3)N_(4)photocatalyst further enables high-efficiency photocatalytic hydrogen *** designed hyperboloid wood-based architecture possesses a multiphase interface of water steam/catalyst/hydrogen to reduce the transport resistance of hydrogen gas in liquid and ultimately maximize the output of hydrogen ***,this coupled photothermal-photocatalytic system achieves a stable solar evaporation rate of 2.16 kg m^(-1)h^(-1)under one sun irradiation and highly efficient hydrogen-evolving rate of 3096μmol g^(-1)h^(-1).This work paves a way to explore the improvement of photocatalytic hydrogen production by synergic photothermal effect for potential applications in renewable solar energy utilization and hydrogen production.

关键词： Photocatalysis Photothermal Nb_(2)C MXene g-C_(3)N_(4) Wood