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Chinese Journal of chemistry 2024年第2期42卷 151-156页

作者： Ming Yang Xin-Yu Wang Jie Wang Yu-Long Zhao Jilin Province Key Laboratory of Organic Functional Molecular Design&Synthesis Faculty of ChemistryNortheast Normal UniversityChangchunJilin 130024China

A photocatalytic[3+2]annulation of alkenes with vinyl azides was developed under irradiation by visible light in the presence of organic dye *** substrate scope and high functional group tolerance were demonstrated by more than 50 *** reaction provides a novel and efficient method for the synthesis of polyfunctionalized pyrroles under very mild metal-free conditions without other additives.

关键词： Photocatalysis Vinyl azides Alkenes Pyrroles Annulation Radical reactions

Electrosynthesis of hydroquinonethioethers using electrochemical oxidation of hydroquinone in the presence of thiouracil derivatives

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Chinese Chemical Letters 2014年第5期25卷 797-801页

作者： Mohsen Ameri alireza Asghari ali Amoozadeh Hassan Daneshinejad Davood Nematollahi Department of chemistry Semnan University College of chemistry Shahrood University of Technology faculty of chemistry Bu-Ali Sina University

Electrochemical oxidation of hydroquinone（1a） has been studied in the presence of 6-methyl-2-thiouracil（3a） and 6-propyl-2-thiouracil（3b） as nucleophiles in a DMF/buffer mixture,using cyclic voltammetry and controlled-potential *** results indicated that the p-quinone（2a） derived from 1a participates in a 1 4-Michael addition reaction with the thiouracil derivatives（3a–b） to form the corresponding hydroquinonethioether derivatives（6a–6b）.The electrosynthesis of these compounds（6a–b） has been successfully performed on carbon rod electrodes in an undivided cell in good yield and purity.

关键词： Electrochemical oxidation Cyclic voltammetry Thiouracil derivatives 1 4-Michael addition Hydroquinonethioether

Abiotic and Biotic Factors Controlling Grain Aroma along Value Chain of Fragrant Rice:A Review

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Rice science 2024年第2期31卷 142-158页

作者： Ayut KONGPUN Tonapha PUSADEE Pennapa JAKSOMSAK Kawiporn CHINACHANTA Patcharin TUIWONG Phukjira CHAN-IN Sawika KONSAENG Wasu PATHOM-AREE Suchila UTASEE Benjamaporn WANGKAEW Chanakan PROM-U-THAI faculty of Agricultural Technology Kalasin UniversityKalasin 46000Thailand Department of Plant and Soil Sciences Faculty of AgricultureChiang Mai UniversityChiang Mai 50200Thailand Program in Agricultural chemistry Faculty of Agricultural ProductionMaejo UniversityChiang Mai 50290Thailand Department of Biology Faculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand Lanna Rice Research Center Chiang Mai UniversityChiang Mai 50200Thailand

The aroma of fragrant rice is one of the grain quality attributes that significantly influenceconsumer preferences and prices in world markets. The volatile compound 2-acetyl-1-pyrroline (2AP) isrecognized as a key component of the aroma in fragrant rice. The variation in grain 2AP content amongvarious fragrant rice varieties is associated with the expression of the badh2 gene, with 19 alleles havingbeen identified so far. The grain 2AP content is strongly influenced by environmental and managementfactors during cultivation as well as post-harvest conditions. This review pinpointed the major abiotic andbiotic factors that control grain 2AP content. Abiotic factors refer to water, temperature, light quality,fertilizer application (both macro- and micro-nutrients), and soil properties, including salinity, while bioticfactors include microorganisms that produce aromatic compounds, thus influencing the grain aroma infragrant rice. Post-harvest management, including storage and drying conditions, can significantly impactthe grain 2AP content, and proper post-harvest conditions can intensify the grain aroma. This reviewsuggests that there are rice varieties that can serve as potential sources of genetic material for breedingrice varieties with high grain aroma content. It offers an overview of recent research on the major factorsaffecting the aroma content in fragrant rice. This knowledge will facilitate further research on theproduction of high-quality rice to meet the demands of farmers and consumers.

关键词： aromatic rice 2-acetyl-1-pyrroline abiotic stress biotic stress post-harvest management

A power resource dispatching framework with a privacy protection function in the Power Internet of Things

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Frontiers of Information Technology & Electronic Engineering 2022年第9期23卷 1354-1368页

作者： Shuanggen LIU Shuangzi ZHENG Wenbo ZHANG Runsheng FU Department of Computer Engineering Engineering FacultyBu-Ali Sina UniversityHamedanIran

Smart meters in the Power Internet of Things generate a large amount of power ***,data privacy in the process of calculation,storage,and transmission is an urgent problem to be ***,in this paper we propose a power resource dispatching framework(PRDF)with a privacy protection function,which uses a certificateless aggregate signcryption scheme based on cloud-fog *** pseudonyms and aggregating users’power data,PRDF not only protects users’privacy,but also reduces the computing cost and communication overhead under traditional cloud *** addition,if the control center finds that a user has submitted abnormal data,it can send a request to the user management center to track the real identity of the *** scheme satisfies security requirements based on the random oracle model,including confidentiality and ***,we compare our scheme with other certificateless aggregate signcryption schemes by *** results show that compared with traditional methods,our method performs better in terms of the computation cost.

关键词： Power Internet of Things Cloud-fog cooperation Elliptic curve Random oracle model Certificateless aggregate signcryption

Surfactant-assisted synthesis of bis(indolyl)methanes in water

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Chinese Chemical Letters 2011年第11期22卷 1305-1308页

作者： Eskandar Kolvari Mohammad ali Zolfigol Hoda Banary Department of chemistry faculty of Science Semnan UniversitySemnanIran faculty of chemistry bu-ali sina university HamedanIran

An environmentally friendly synthesis method for bis（indolyl）methanes has been developed in the presence of sodium lauryl ether sulfate（SLES）,electrophilic substitution reactions of indoles with aldehydes were acc... 详细信息

关键词： Sodium lauryl ether sulfate Bis(indolyl) methanes Indoles Aldehydes

Superwettable interface towards biodetection in confined space

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Nano Research 2024年第2期17卷 602-617页

作者： Zexu Pang Zhikang Cao Wanlu Li Wenxia Xu Yingying Zhang Qitao Zhou Jing Pan Fan Xia State Key Laboratory of Biogeology and Environmental Geology Engineering Research Center of Nano-Geomaterials of the Ministry of EducationFaculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074China

The detection of biomarkers with both high sensitivity and specificity is crucial for the diagnosis and treatment of related ***,many current detections employ ex-situ detection method and non-confined condition,thus have many problems,which may eventually lead to inaccurate detection *** to detection in non-confined space,detection in confined space can better reflect the real in-vivo ***,the construction of detection for target molecules in confined space has great significance for both theoretical research and practical *** realize the detection of target molecules in confined space,the probes should accurately enter the confined space where the target molecules reside and interact with the ***,how to explore and utilize the properties of the interface(for example,bioinspired superwettability)has always been a hot and difficult topic in this ***,the recent advances and our efforts in recent 10 years on detection of bio-target molecules in confined space with superwettable interface have been introduced from the perspective of the detection *** suitable and most widely employed detection methods for target molecules in confined spaces are introduced ***,recent progresses for related detections based on visual,optical,and electrochemical detection methods are presented ***,the perspective for detection in confined space is discussed for the future development of biochemical detection.

关键词： biodetection superwettability confined space interface

Enhanced boron neutron capture therapy(BNCT)through controlled drug release via boron-loaded nanofiber mats

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Nano Research 2024年第8期17卷 7479-7492页

作者： Wenyong Huang Yongjin Yang Yong Pan Shiwei Jing Yanxin Qi Yubin Huang faculty of chemistry Northeast Normal UniversityChangchun 130024China Key Laboratory of Sustainable Advanced Functional Materials of Jilin Province Changchun 130024China School of Physics Northeast Normal UniversityChangchun 130024China

Boron neutron capture therapy(BNCT)is a novel binary therapy combining boron targeted drugs and neutron irradiation,which can selectively and effectively kill cancer cells at the cellular *** release of boron drug and its accumulation in tumor sites are the crux of ***,we developed a^(10)B-boric acid(^(10)BA)-loaded nanofiber applying for BNCT by in situ *** nanofibers were obtained by electrospinning technique using polyethylene glycol/polylactide(PEO/PLA)block *** changing the ratio of hydrophilicity to hydrophobicity of the nanofibers,the controlled release and the effective accumulation of boron 10 isotope(^(10)B)were achieved in ***^(10)B content in tumor could reach to 2540μg/g,significantly exceeding the required level of 20–50μg/g for BNCT *** pertinent DNA damage experiments,direct evidence and quantified data of BNCT-induced DNA damage in tumor cells were obtained for the first *** sequencing was employed to predict the molecular mechanisms and potential signaling pathways of BNCT,providing theoretical basis for future combined *** antitumor efficiency of BNCT was demonstrated by establishing mice model of subcutaneous tumor and tumor *** research presents a novel boron-loaded nanofiber mats for BNCT,which enables controlled drug release and holds significant potential in the treatment of unresectable or postoperative residual tumors.

关键词： boron neutron capture therapy nanofibers controlled release in situ administration

Low-temperature replacement construction of three-dimensional corrosion-resistant interface for deeply rechargeable Zn metal batteries

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Nano Materials Science 2024年第3期6卷 329-336页

作者： Jinze Li Daniel Rohrens Gianluca Dalfollo Xiaochao Wu Ziheng Lu Qiang Gao Bo Han Ruimin Sun Chenggang Zhou Jindi Wang Zhao Cai faculty of Materials Science and chemistry China University of GeosciencesWuhan430074China Institute of Inorganic chemistry RWTH Aachen UniversityAachen52074Germany Microsoft Research AI4Science Beijing10080China Institute of New Energy on Chemical Storage and Power Sources College of Applied Chemistry and Environmental EngineeringYancheng Teachers UniversityYancheng224000China

Aqueous Zn batteries are promising candidates for grid-scale renewable energy *** electrodes have been widely investigated and applied as anode materials for aqueous Zn batteries,however,they suffer from limited surface area and severe interfacial issues including metallic dendrites and corrosion side reactions,limiting the depth of discharge(DOD)of the foil electrode ***,a low-temperature replacement reaction is utilized to in-situ construct a three-dimensional(3D)corrosion-resistant interface for deeply rechargeable Zn foil ***,the deliberate low-temperature environment controlled the replacement rate between polycrystalline Zn metal and oxalic acid,producing a Zn foil electrode with distinct 3D corrosion-resistant interface(3DCI-Zn),which differed from conventional two-dimensional(2D)protective structure and showed an order of magnitude higher surface ***,the 3DCI-Zn electrode exhibited dendrite-free and anticorrosion properties,and achieved stable plating/stripping performance for 1000 h at 10 mA cm^(-2)and 10 mAh cm^(-2)with a remarkable DOD of 79%.After pairing with a MnO2cathode with a high areal capacity of 4.2 mAh cm^(-2),the pouch cells delivered 168 Wh L^(-1)and a capacity retention of 89.7%after 100 cycles with a low negative/positive(N/P)ratio of 3:1.

关键词： Aqueous batteries Foil electrodes Depth of discharge Dendrites Corrosion side reactions

Properties of Bark Particleboard Bonded with Demethylated Lignin Adhesives Derived from Leucaena leucocephala Bark

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Journal of Renewable Materials 2024年第4期12卷 737-769页

作者： Rafidah Md Salim Jahimin Asik Mohd Sani Sarjadi Wood Testing Laboratory Faculty of Tropical ForestryUniversity of Malaysia SabahKota KinabaluSabah88400Malaysia Industrial chemistry Program Faculty of Science and Natural ResourcesUniversity of Malaysia SabahKota KinabaluSabah88400Malaysia

Lignin extraction from bark can maximize the utilization of biomass waste,offer cost-effectiveness,and promote environmental friendliness when employed as an adhesive material in bark particleboard *** of fine(0.2 to 1.0 mm),medium(1.0 to 2.5 mm),and coarse(2.5 to 12.0 mm)sizes,derived from the bark of Leucaena leucocephala,were hot-pressed using a heating plate at 175℃for 7 min to create single-layer particleboards measuring 320 mm×320 mm×10 mm,targeting a density of 700 kg/m^(3).Subsequently,the samples were trimmed and conditioned at 20℃and 65%relative *** this study,we compared bark particleboard bonded with urea formaldehyde(UF)adhesive to fine-sized particleboard bonded with demethylated lignin *** results indicated that bark particleboards utilizing demethylated lignin and UF adhesives exhibited similar *** particleboard showed differences in modulus of elasticity(MOE)and modulus of rupture(MOR),while medium-sized particles exhibited significant variations in moisture content(MC)and water absorption(WA).Furthermore,the thickness swelling of coarse and medium-sized particles under wet and oven-dried conditions exhibited notable ***,the demethylated lignin adhesive extracted from *** bark demonstrated similar quality to UF adhesive,with particle size correlating inversely to the strength of the bark particleboard.

关键词： Bark particleboard properties demethylated lignin lignin adhesives Leucaena leucocephala bark particles

Catalytic anode surface enabling in situ polymerization of gel polymer electrolyte for stable Li metal batteries

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Nano Research 2024年第6期17卷 5216-5223页

作者： Guocheng Li Kang Liang Yuanjian Li Xiangrui Duan Lin Fu Zhao Cai Zhaofu Zhang Jiangnan Dai Yongming Sun Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China The Institute of Technological Sciences Wuhan UniversityWuhan 430074China faculty of Materials Science and chemistry China University of Geoscience(Wuhan)Wuhan 430074China

Employing quasi-solid-state gel polymer electrolyte(GPE)instead of the liquid counterpart has been regarded as a promising strategy for improving the electrochemical performance of Li metal ***,the poor and uneven interfacial contact between Li metal anode and GPE could cause large interfacial resistance and electrochemical Li stripping/plating inhomogeneity,deteriorating the electrochemical ***,we proposed that the functional component of composite anode could work as the catalyst to promote the in situ polymerization reaction,and we experimentally realized the integration of polymerized-dioxolane electrolyte and Li/Li_(22)Sn_(5)/LiF composite electrode with low interfacial resistance and good stability by in situ catalyzation ***,the reaction kinetics and stability of metallic Li anode were significantly *** a demonstration,symmetric cell using such a GPE-Li/Li_(22)Sn_(5)/LiF integration achieved stable cycling beyond 250 cycles with small potential hysteresis of 25 mV at 1 mA·cm^(−2)and 1 mAh·cm^(−2),far outperforming the counterpart regular GPE on pure *** with LiNi0.5Co0.3Mn0.2O2,the full cell with the GPE-Li/Li_(22)Sn_(5)/LiF integration maintained 85.7%of the original capacity after 100 cycles at 0.5 C(1 C=200 mA·g^(−1)).Our research provides a promising strategy for reducing the resistance between GPE and Li metal anode,and realizes Li metal batteries with enhance electrochemical performance.

关键词： catalyzation polymerization interface resistance interfacial stability Li metal batteries electrochemical performance