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Research of surface-enhanced Raman scattering on Ag@PMBA@C@Au hybrid nanoparticles

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Optoelectronics Letters 2024年第2期20卷 65-69页

作者： TAN Enzhong LÜ Suye Liberal Study College Beijing Institute of Petrochemical TechnologyBeijing 102617China

Monodispersed, biocompatible, and readily-functionalized hybrid reporter-embedded core-shell nanopartilces(NPs) have been prepared in a simple route. This composite offers a potential platform for immunochemical detection using surface-enhanced Raman scattering(SERS) due to their high sensitivity, good stability and biocompatiblity. This also provides a new platform for insight into SERS enhancement mechanism.

关键词： mechanism. readily SERS

The quest for selective Cs^(+) transport in plants

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Molecular Plant 2021年第4期14卷 552-554页

作者： Manuel Nieves-Cordones Francisco Rubio Departamento de Nutricion Vegetal Centro de Edafologia y Biologia Aplicada del Segura-CSICCampus de Espinardo30100 MurciaSpain

Nuclear accidents have led to the release to the environment of radioactive isotopes,mainly radioactive cesium(Cs^(+)),contaminating large areas of soil for very long periods of time(Burger and Lichtscheidl,2018).These contaminated soils contain^(134)Cs^(+)and^(137)Cs^(+)radioisotopes that are readily accumulated into plants and that,through the food chain,are transferred to animals and humans,causing important health problems(Burger and Lichtscheidl,2018).

关键词： readily release transport

Microneedle-based skin patch for blood-free rapid diagnostic testing

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Microsystems & Nanoengineering 2020年第1期6卷 255-265页

作者： Xue Jiang Peter B.Lillehoj Department of Mechanical Engineering Rice UniversityHoustonTX 77005USA Department of Bioengineering Rice UniversityHoustonTX 77030USA

Rapid diagnostic tests are one of the most commonly used tests to detect and screen for infectious diseases in the developing world.While these tests are simple,inexpensive,and readily available,they rely on finger-prick blood sampling,which requires trained medical personnel,poses risks of infection,and can complicate cooperation in young children,asymptomatic individuals,and communities with blood taboos.Here,we report a novel microneedle-based skin patch for the rapid detection of protein biomarkers in dermal interstitial fluid.Sample collection is facilitated by a hydrophilic hollow microneedle array that autonomously extracts and transports interstitial fluid to an antibody-based lateral flow test strip via surface tension for colorimetric antigen detection.We employ a simple gold enhancement treatment to enhance the detection sensitivity of this colloidal gold-based lateral flow assay and elucidate the underlying mechanism of this enhancement mechanism through experimental investigation.For proof-of-concept,this device was used to detect Plasmodium falciparum histidine-rich protein 2,a biomarker for malaria infection,which could be detected at concentrations as low as 8ng/mL.Each test can be completed inreadily adapted to detect other protein biomarkers in interstitial fluid,making it a promising tool for point-of-care testing.

关键词： needle patch readily

Asymmetric optical camouflage:tuneable reflective colour accompanied by the optical Janus effect

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Light(Science & Applications) 2020年第1期9卷 325-334页

作者： Taehyun Kim Eui-Sang Yu Young-Gyu Bae Jongsu Lee In Soo Kim Seok Chung Seung-Yeol Lee Yong-Sang Ryu Sensor System Research Center Korea Institute of Science and TechnologySeoul 02792Republic of Korea Department of Micro/Nano Systems Korea UniversitySeoul 02841Republic of Korea School of Electronic and Electrical Engineering Kyungpook National UniversityDaegu 41566Republic of Korea Nanophotonics Research Center Korea Institute of Science and TechnologySeoul 02792Republic of Korea School of Mechanical Engineering Korea UniversitySeoul 02841Republic of Korea

Going beyond an improved colour gamut,an asymmetric colour contrast,which depends on the viewing direction,and its ability to readily deliver information could create opportunities for a wide range of applications,such as nextgeneration optical switches,colour displays,and security features in anti-counterfeiting devices.Here,we propose a simple Fabry–Perot etalon architecture capable of generating viewing-direction-sensitive colour contrasts and encrypting pre-inscribed information upon immersion in particular solvents(optical camouflage).Based on the experimental verification of the theoretical modelling,we have discovered a completely new and exotic optical phenomenon involving a tuneable colour switch for viewing-direction-dependent information delivery,which we define as asymmetric optical camouflage.

关键词： asymmetric generating readily

Oxidative Dehydrogenative Silylation-Alkenation Reaction of Alkyl Aromatics with Silanes

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Chinese Journal of Chemistry 2020年第10期38卷 1065-1069页

作者： Wei Jiang Yongxin Zhang Yingpeng Su Xiazhen Bao Ying Fu Congde Huo Gansu Internotional Scientific and Technologicl Cooperation Base of Water Relention Chemical Functional Moterials/Cllege of Chemistry and Chemical Engineering Northwest Normal UniversityLanzhouGansu 730070China

Summary of main observation and conclusion A Cu(OAc)2/DDQ/DTBP/Py system catalyzed oxidative dehydrogenative silylation-alkenation tandem reaction of readily available alkyl aromatic compounds with silanes was established.A variety of functionalized alkenyl organosilicon compounds were provided in good to high yields with a totalβ-(E)selectivity.The control experiments revealed that the transformation might proceed through a radical pathway.

关键词： oxidative readily conclusion

Photochemical defluorinative functionalization of α-polyfluorinated carbonyls via spin-center shift

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Chinese Chemical Letters 2022年第6期33卷 2763-2764页

作者： Zele Chen Jiarong Chen Jun Xuan Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials and Key Laboratory of Functional Inorganic Materials of Anhui Province College of Chemistry&Chemical EngineeringAnhui UniversityHefei 230601China CCNU-uOttawa Joint Research Centre College of ChemistryCentral China Normal UniversityWuhan 430079China

Organic molecules containing gem–difluoromethylene unit are one of the most important classes of compounds that have various valuable applications ranging from drug discovery to material science [1]. Not surprisingly, numerous strategies have been developed towards the synthesis of these target organofluorine compounds. Within this research area, direct C–F bond cleavage of cheap and readily accessible polyfluorinated compounds represents one of the most potentially powerful methods to access diverse gem–difluoromethylene skeletons.

关键词： fluorine skeleton readily

Unloading phosphate for starch synthesis in cereal grains

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Molecular Plant 2021年第8期14卷 1232-1233页

作者： Lei Xu Keke Yi Key Laboratory of Plarft Nutrition and Fertilizers Ministry of Agriculture and Rural AffairsInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China

The macronutrient phosphorus(P)is essential for plant growth and of vital importance to crop yield.It is taken up from the soil in the form of inorganic orthophosphate[PO_(4)^(3-),HPO_(4)^(2-),H_(2)PO_(4)^(-)(Pi)]by plant roots.As Pi readily forms insoluble complexes and precipitates with organic matter and mineral cations,Pi bioavailability in the soil is usually low and often limits crop growth and final yield.

关键词： synthesis roots readily

Efficient and Divergent Synthesis of Medium-Sized Lactams through Zinc-Catalyzed Oxidative Cyclization of Indoly Ynamides

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Chinese Journal of Chemistry 2020年第3期38卷 263-268页

作者： Hang-Hao Li Si-Han Ye Yang-Bo Chen Wen-Feng Luo Peng-Cheng Qian Long-Wu Ye State Key Laboratory of Physical Chemistry of Solid Surfaces and Key Laboratory for Chemical Biology of Fujian Province College of Chemistry and Chemical EngineeringXiamen UniversityXiamenFujian 361005Chino Institute of New Materials&Industry Technology College of Chemistry&Materials EngineeringWenzhou UniversityWenzhouZhejiang 325035China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

An efficient zinc-catalyzed oxidative cyclization of readily available indoly ynamides has been developed,enabling rapid and practical access to a diverse array of valuable medium-sized lactams in mostly good to excellent yields with wide substrate scope.In addition,such an asymmetric synthesis has also been explored by employing the chiral substrate.

关键词： oxidative readily sized

Electrochem ically Enabled Intram olecular Am inooxygenation of Alkynes v ia Am idyl Radical Cyclization

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Chinese Journal of Chemistry 2020年第4期38卷 394-398页

作者： Zhong-Wei Hou Hai-Chao Xu State Key Laboratory of Physical Chemistry of Solid Surfaces iChEMKey Laboratory of Chemical Biology of Fujian Provinceand College of Chemistry and Chemical EngineeringXiamen UniversityXiamenFujian 361005Chino

Summary of main observation and conclusion An electrochemical synthesis of oxazol-2-ones and imidazol-2-ones has been developed via 5-exo-dig cyclization of propargylic carbamates-and ureas-derived amidyl radicals.The electrosynthesis relies on the dual function of 2,2,66-tetramethylpiperidin-1-y oxyl(TEMPO)as a redox mediator for amidyl radical formation and an oxygen atom donor.The reactions are conducted under mild conditions using a simple setup and provide convenient access to functionalized oxazol-2-ones and imidazol-2-ones from readily available materials.

关键词： materials. donor readily