检索结果-南通市图书馆

Aggregation-Induced Synthesis (AIS): Asymmetric Synthesis via Chiral Aggregates

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research 2022年第4期2022卷 731-739页

作者： Hossein Rouh Yao Tang Ting Xu Qingkai Yuan Sai Zhang Jia-Yin Wang shengzhou jin Yu Wang Junyi Pan Hannah LWood James D.McDonald Guigen Li Department of Chemistry and Biochemistry Texas Tech UniversityLubbockTexas 79409-1061USA Institute of Chemistry and BioMedical Sciences School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210093China

A new chiral aggregate-based tool for asymmetric synthesis has been developed by taking advantage of chiral aggregates of GAP(Group-Assisted Purification)reagents,N-phosphonyl *** tool was proven to be successful in the asymmetric GAP synthesis of functionalized 2,3-dihydrobenzofurans by reacting salicyl N-phosphonyl imines with dialkyl bromomalonates in various cosolvent *** chiral induction can be controlled by differentiating between two asymmetric directions simply by changing the ratios of cosolvents which are commonly adopted in AIE(aggregation-induced emission)*** formation of chiral aggregates was witnessed by a new analytical tool-aggregation-induced polarization(AIP).The present synthetic method will be broadly extended for general organic synthesis,particularly,for asymmetric synthesis and asymmetric catalysis in the future.

关键词： asymmetric chiral synthesis

Orientational Chirality,Its Asymmetric Control,and Computational Study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research 2023年第1期2022卷 545-552页

作者： shengzhou jin Yu Wang Yao Tang Jia-Yin Wang Ting Xu Junyi Pan Sai Zhang Qiankai Yuan Anis Ur Rahman James D.McDonald Guo-Qiang Wang Shuhua Li Guigen Li School of Chemistry and Chemical Engineering Nanjing UniversityNanjing210093China Department of Chemistry and Biochemistry Texas Tech UniversityLubbockTX 79409-1061USA Continuous Flow Engineering Laboratory of National Petroleum and Chemical Industry Changzhou UniversityChangzhouJiangsu 213164China

Orientational chirality was discovered and characterized by a C(sp)-C(sp3)axis-anchored chiral center and a remotely anchored blocker.X-ray structural analysis proved that orientatiomers are stabilized by through-space functional groups,making it possible for 1 R-or S-chiral center to exhibit 3 orientational isomers simply by rotating operations.A new model system was proposed,fundamentally different from the traditional Felkin-Ahn-type or Cram-type *** these traditional models,chiral C(sp^(3))center and blocking C(sp^(3))carbons are connected adjacently,and there exist 6 energy barriers during rotating along the C(sp^(2))-C(sp^(3))*** comparison,the present orientational chirality model shows that a chiral C(sp)-C(sp^(3))carbon is remotely located from a blocking ***,it is focused on the steric dialog between a chiral C(sp^(3))center and a remotely anchored functional *** exist 3 energy barriers for either(R)-or(S)-C(sp)-C(sp^(3))stereogenicity in the new *** amide auxiliary was proven to be an excellent chiral auxiliary in controlling rotations of orientatiomers to give complete *** asymmetric synthesis of individual orientatiomers was conducted via multistep synthesis by taking advantage of the Suzuki-Miyaura cross-coupling and Sonogashira coupling *** functional theory computational study presented optimized conformers and relative energies for individual *** discovery would be anticipated to result in a new stereochemistry topic and have a broad impact on chemical,biomedical,and material sciences in the future.

关键词： chiral Chiral rotating

Multilayer 3D Chiral Folding Polymers and Their Asymmetric Catalytic Assembly

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research 2022年第2期2022卷 307-314页

作者： Yao Tang shengzhou jin Sai Zhang Guan-Zhao Wu Jia-Yin Wang Ting Xu Yu Wang Daniel Unruh Kazimierz Surowiec Yanzhang Ma Shiren Wang Courtney Katz Hongjun Liang Yunze Li Wellong Cong Guigen Li Department of Chemistry and Bochemistry Texas Tech UiniversityLubockTexas 79409-1061USA Institute of Chemistry and Biomedical Sciences School of Chermistry and Chemical EngineeringNanjing UnivrsityNanjing 210093China Department of Mechanical Engineering Texas Tech UniversilyLubockTexas 79409-1061USA Deparment of Indusrtrial。Systems Enginering Texas ACM UniversiyCollege StationTexas 77843USA Deparment of Cell Plhysiology and Molecular Biophysics School of MedicineTexas Tech University Heath Sciemces CenterLubbockTX 79430-6551.USA Department of Indiustrial Engineering Texas Tech UniversityLubookTexas 79409.3061USA

A novel class of polymers and oligomers of chiral folding chirality has been designed and synthesized,showing structurally compacted ***/multiple layer *** uniformed and diferentiated aromatic chromophoric units were successfully constructed between naphthy!piers of this *** monomers,catalysts,and catalytic systems led 1o the success of asymmetric catalytic Suzuki-Miyaura polycouplings Enantio-and diastereochemistry were unambiguously determined by X-ray structural analysis and concurrently by comparison with a similar asymmetric induction by the same catalyst in the asymmetric synthesis of a chiral three layered *** resuling chiral polymers exhibit intense fluorescence activity in a solid form and solution under speci fic wavelength irradiation.

关键词： chiral asymmetric Catalytic

Triple-Columned and Multiple-Layered 3D Polymers:Design,Synthesis,Aggregation-Induced Emission(AIE),and Computational Study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research 2021年第1期2021卷 112-124页

作者： Guanzhao Wu Yangxue Liu Zhen Yang Liulei Ma Yao Tang Xianliang Zhao Hossein Rouh Qixuan Zheng Peng Zhou Jia-Yin Wang Farhan Siddique Sai Zhang shengzhou jin Daniel Unruh Adelia JAAquino Hans Lischka Kristin M.Hutchins Guigen Li Department of Chemistry and Biochemistry Texas Tech UniversityLubbockTexas 79409-1061USA Institute of Chemistry and Biomedical Sciences School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210093China School of Pharmaceutical Sciences and Technology Tianjin UniversityTianjin 300072China Department of Mechanical Engineering Texas Tech UniversityLubbockTX 79409USA

Conjugated polymers and oligomers have great potentials in various fields,especially in materials and biological sciences because of their intriguing electronic and optoelectronic *** recent years,the through-space conjugation system has emerged as a new assembled pattern of multidimensional ***,a novel series of structurally condensed multicolumn/multilayer 3D polymers and oligomers have been designed and synthesized through one-pot Suzuki polycondensation(SPC).The intramolecularly stacked arrangement of polymers can be supported by either X-ray structural analysis or computational *** all cases,polymers were obtained with modest to good yields,as determined by GPC and 1 ***-TOF analysis has proven the speculation of the step-growth process of this *** computational study of ab initio and DFT calculations based on trimer and pentamer models gives details of the structures and the electronic *** results of optical and AIE research confirmed by calculation indicates that the present work would facilitate the research and applications in materials.

关键词： properties transition materials

Multidisciplinary treatment of molten aluminum combined burn:An unusual case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Plastic and Reconstructive Surgery 2024年第3期6卷 135-138页

作者： shengzhou Shan Yinbo Peng Liqing Gong Zhigang Mao Weirong Yu Tao Ni Peng Xu Department of Plastic and Reconstructive Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai200011China

Molten aluminum is among the most common causes of burns in the metal ***,only few reports are available on molten aluminum ***,we report an unusual case of molten aluminum *** patient had burns not only on the body surface but also in the respiratory tract and esophagus,adding to the difficulty of *** consultation and cooperation led to the development of a treatment plan for the patient,which included tracheotomy,respiratory management,endoscopic therapy,infection control,and psychological *** our knowledge,this is the first report of molten aluminum-induced burns involving the face,neck,respiratory tract,esophagus,and *** also describe our experience with multidisciplinary treatment for the management of molten aluminum burns.

关键词： Molten aluminum Combined burn Multidisciplinary treatment

Synergistic enhancement of chemotherapy for bladder cancer by photothermal dual-sensitive nanosystem with gold nanoparticles and PNIPAM

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第8期35卷 471-474页

作者： Xiangqian Cao Chenkai Yang Xiaodong Zhu Mengxin Zhao Yilin Yan Zhengnan Huang jinming Cai jingming Zhuang shengzhou Li Wei Li Bing Shen Department of Urology Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 200080China Department of Nanomedicine&Shanghai Key Lab of Cell Engineering Naval Medical UniversityShanghai 200433China

Bladder cancer is a common malignant tumor of the urinary system with the potential to be treated by nano drug delivery *** current work describes the synthesis and characterization of a novel nanomaterial to construct a nano-carrier based on 1-palmitoyl-2-oleoyl-sn-glycerol-3-phosphatecholine(POPC)loaded doxorubicin(DOX)and embedded with gold nanoparticles and poly(N-isopropyl acry-lamide)(PNIPAM)(GNPS@PNIPAM-POPC-DOX,GPPD).The dual-sensitive nanosystem gives simultaneous photothermal treatment and chemotherapy for bladder *** vitro and in vivo properties were as-sessed using bladder cancer cell lines and mice and GPPD system distribution,tumor inhibition,and biocompatibility are *** system had favorable stability,low biological toxicity,controlled re-lease efficiency,photothermal synergistic action,efficient photothermal transition,and favorable tumor suppressive *** a result,GPPD is a potential therapeutic approach for bladder cancer.

关键词： Doxorubicin Gold nanoparticles Thermosensitive polymer Photothermal therapy Bladder cancer

维普期刊数据库

民族主义与世界主义之间:柏林浪漫派共同体书写初探

在线全文

学校读者我要写书评

暂无评论

同济大学学报（社会科学版） 2024年第2期35卷 14-22页

作者：卢盛舟南京大学外国语学院南京210023

活跃于19世纪初德意志思想舞台的柏林浪漫派对共同体的理论建构与文学书写做出过重要贡献。政治哲学家亚当·米勒在1809年出版的《治国术》中提出了强调整体性、自然性和历史性的共同体理论主张,而柏林浪漫派作家既或隐或显地对民族共... 详细信息

活跃于19世纪初德意志思想舞台的柏林浪漫派对共同体的理论建构与文学书写做出过重要贡献。政治哲学家亚当·米勒在1809年出版的《治国术》中提出了强调整体性、自然性和历史性的共同体理论主张,而柏林浪漫派作家既或隐或显地对民族共同体展开文学想象,又通过交谊结社为实现民族共同体开展政治实践。在他们的共同体书写中,除以往大多数研究所确认的民族主义内涵外,还存在重要的世界主义维度:相关作家并不囿于民族国家疆界,而是在世界范围内思考民族共同体的建构和与文化他者的共生问题——民族独立、帝国殖民、和谐共存等多重欲望在此纠缠交错,民族主义与世界主义也因此并非变奏关系,而是呈现出了间性特征。

关键词：柏林浪漫派共同体民族主义世界主义

维普期刊数据库

Multidisciplinary treatment of molten aluminum combined burn: An unusual case report

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Plastic and Reconstructive Surgery 2024年第3期 135-138页

作者： shengzhou Shan Yinbo Peng Liqing Gong Zhigang Mao Weirong Yu Tao Ni Peng Xu Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital Shanghai Jiao Tong University School of Medicine

Molten aluminum is among the most common causes of burns in the metal industry. However, only few reports are available on molten aluminum injuries. Herein, we report an unusual case of molten aluminum burn. The patient had burns not only on the body surface but also in the respiratory tract and esophagus, adding to the difficulty of treatment. Multidisciplinary consultation and cooperation led to the development of a treatment plan for the patient, which included tracheotomy, respiratory management, endoscopic therapy, infection control, and psychological support. To our knowledge, this is the first report of molten aluminum-induced burns involving the face, neck, respiratory tract, esophagus, and eyes. We also describe our experience with multidisciplinary treatment for the management of molten aluminum burns.

关键词：

Carbon nanotubes-Nafion composites as Pt-Ru catalyst support for methanol electro-oxidation in acid media

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Natural Gas Chemistry 2009年第2期18卷 199-204页

作者： shengzhou Chen Fei Ye Weiming Lin School of Chemistry and Chemical Engineering Guangzhou University Guangzhou 510006 Guangdong China School of Chemical and Energy Engineering South China University of Technology Guangzhou 510640 Guangdong China

Carbon nanotubes-Nafion （CNTs-Nation） composites were prepared by impregnated CNTs with Nation in ethanol solution and characterized by FT-IR. Pt-Ru catalysts supported on CNTs-Nafion composites were synthesized by microwave-assisted polyol process. The physical and electrochemical properties of the catalysts were characterized by X-ray diffraction （XRD）, transmission electron microscope （TEM）, CO stripping voltammetry, cyclic voltammetry （CV） and chronoamperometry （CA）. The results showed that the Nation incorporation in CNTs-Nation composites did not significantly alter the oxygen-containing groups on the CNTs surface. The Pt-Ru catalyst supported on CNTs-Nafion composites with 2 wt% Naton showed good dispersion and the best CO oxidation and methanol electro-oxidation activities.

关键词： carbon nanotubes-Nafion composites Pt-Ru catalysts methanol electro-oxidation

维普期刊数据库