维普中文期刊产品整合服务
5篇 您的检索式:作者名="Guigen Ma"
    题名 作者 年代 出处 被引量
1Enantioselective assembly of multi-layer 3D chirality显示文摘The first enantioselective assembly of sandwich-shaped organo molecules has been achieved by conducting dual asymmetric Suzuki-Miyaura couplings and nine other reactions.This work also presents the first fully C-C anchored multi-layer 3D chirality with optically pure enantiomers.As confirmed by X-ray diffraction analysis that this chiral framework is featured by a unique C2-symmetry in which a nearly parallel fashion consisting of three layers:top,middle and bottom aromatic rings.Unlike the documented planar or axial chirality,the present chirality shows its top and bottom layers restrict each other from free rotation,i.e.,this multi-layer 3D chirality would not exist if either top or bottom layer is removed.Nearly all multi-layered compounds showed strong luminescence of different colors under UV irradiation,and several randomly selected samples displayed aggregation-induced emission(AIE)properties.This work is believed to have broad impacts on chemical,medicinal and material sciences including optoelectronic materials in future.Guanzhao Wu Yangxue Liu Zhen Yang Tao Jiang Nandakumar Katakam Hossein Rouh Liulei Ma Yao Tang Sultan Ahmed Anis URahman Hongen Huang Daniel Unruh Guigen Li 2020National Science Review2020,7,3:1
2Multilayer 3D Chiral Folding Polymers and Their Asymmetric Catalytic Assembly显示文摘A novel class of polymers and oligomers of chiral folding chirality has been designed and synthesized,showing structurally compacted triple.column/multiple layer frameworks.Both uniformed and diferentiated aromatic chromophoric units were successfully constructed between naphthy!piers of this framework.Screening 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 product.The resuling chiral polymers exhibit intense fluorescence activity in a solid form and solution under speci fic wavelength irradiation.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 2022Research2022,,2:0
3CRISPR/Sc^(++)-mediated genome editing in rice显示文摘Streptococcus canis Cas9(ScCas9)is an RNAguided endonuclease with NNG protospacer adjacent motif(PAM)specificity whose genomeediting activity in rice is locus-dependent.Here we investigated the performance of a ScCas9 variant named Sc^(++)at different NNG PAM sites in the rice genome;Sc^(++)harbors a T1227K mutation and the substitution of a positively charged loop(residues 367-376).Sc^(++)nuclease achieved broader genome editing compared to the original ScCas9,and its nickase improved targeted base editing in transgenic rice plants.Using the high-efficiency adenine base editor rBE73b,we generated many new OsGS1 alleles suitable for screening of rice germplasm for potential herbicide resistance in the future.The CRISPR/Sc^(++)system expands the genomeediting toolkit for rice.Guigen Ma Yongjie Kuang Zhenwan Lu Xueqi Li Ziyan Xu Bin Ren Xueping Zhou Huanbin Zhou 2021Journal of Integrative Plant Biology2021,63,9:0
4Highly efficient twin-field quantum key distribution with neural networks显示文摘Quantum key distribution(QKD)allows two legitimate parties,Alice and Bob,to share a series of random bits that are secured by the laws of quantum mechanics.As a remarkable theoretical progress towards longer distances.Jingyang LIU Qingqing JIANG Huajian DING Xiao MA Mingshuo SUN Jiaxin XU Chun-Hui ZHANG Shipeng XIE Jian LI Guigen ZENG Xingyu ZHOU Qin WANG 2023Science China(Information Sciences)2023,66,8:0
5Triple-Columned and Multiple-Layered 3D Polymers:Design,Synthesis,Aggregation-Induced Emission(AIE),and Computational Study显示文摘Conjugated polymers and oligomers have great potentials in various fields,especially in materials and biological sciences because of their intriguing electronic and optoelectronic properties.In recent years,the through-space conjugation system has emerged as a new assembled pattern of multidimensional polymers.Here,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 analysis.In all cases,polymers were obtained with modest to good yields,as determined by GPC and 1 H-NMR.MALDI-TOF analysis has proven the speculation of the step-growth process of this polymerization.The computational study of ab initio and DFT calculations based on trimer and pentamer models gives details of the structures and the electronic transition.Experimental results of optical and AIE research confirmed by calculation indicates that the present work would facilitate the research and applications in materials.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 2021Research2021,,1:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费