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| 1 | 两种轮枝菌对15种豆科牧草的致病性显示文摘室内人工接种测定了两种轮枝菌3个菌株对15种豆科牧草的致病性,一个菌株是来自加拿大感病苜蓿上的Verticillium albo-atrum (Vaa),两个V.dahliae菌株中,Vd来自加拿大感病的马铃薯,CVd来自中国的沙打旺。两次试验结果表明,3个菌株对15种豆科牧草表现了不同程度的致病力。沙打旺、鹰嘴黄芪、紫花苜蓿、百脉根、埃及三叶草对3个菌株均感病,每次试验病株率都在50%以上。箭叶三叶草表现中等抗病,而白花草木樨、毛荚野豌豆、长柔毛野豌豆、波斯三叶草、杂三叶草、红三叶草和白三叶草等7种对3个菌株都表现抗病。红豆草对Vaa和CVd两个菌株感病,但抗Vd。山黛豆感染CVd,但抗Vaa和Vd。 | 侯天爵 H.C.Huang J.Fraser | 1995 | 植物病理学报1995,25,2: | 6 |
| 2 | Hydrogen-Bonded Organic Frameworks:A Rising Class of Porous Molecular Materials显示文摘CONSPECTUS:Hydrogen-bonded organic frameworks(HOFs)are a class of porous molecular materials that rely on the assembly of organic building blocks by means of hydrogen-bonding interactions to form two-dimensional(2D)and three-dimensional(3D)crystalline networks.The reversible nature of the hydrogenbond formation endows HOFs with the attributes of solution processability and simple regeneration.High-quality single crystals of HOFs can be grown easily for unambiguous superstructure determination by single-crystal X-ray diffraction,which is crucial for the elucidation of superstructure−property relationships.During the past decade,considerable progress has been achieved in realizing stable HOFs with permanent porosities by focusing on the design of molecular building blocks in order to introduce rigidity,auxiliary[π···π]interactions,and interpenetration of their frameworks to sustain the extended networks.The applications of HOFs are far-reaching,spanning catalysis,energy,and biomedical products as well as the storage and separation of fine chemicals.In this Account,we,first of all,provide an overview of the chronological development of HOFs,starting from the seminal work by Marsh and Duchamp in 1969 on the crystal superstructure of the hydrogen-bonded networks of trimesic acid.We identify the development of novel hydrogen-bonding motifs such as diaminotriazine(DTA),the introduction of the concept of molecular tectonics,and the establishment of permanent porosity in HOFs as being some of the milestones,which incentivized the current burgeoning research endeavors on developing HOFs as multifunctional materials.This Account is focused primarily on surveying the strategies for constructing porous 3D HOFs based on organic building blocks with peripheral carboxyl groups.These strategies are presented in the following categories:(1)the polycatenation of 2D networks by trigonal building blocks to form global 3D frameworks,(2)the utilization of building blocks with 3D geometriestetrahedral and trigonal prismaticthat are predisposed to form 3D networks,and(3)the docking by shape-fitting of geometrically labile building blocks.We emphasize how the molecular geometry of the building blocks plays an important role in modulating the superstructures of extended frameworks so as to address specific applications.Recognizing that the in silico design of HOFs is the ultimate goal of researchers in this field,we also discuss the recent advances in superstructure prediction that lead to the formation of porous supramolecular crystals and assess the complications in implementing computational methods for HOFs with complex superstructures.We hope this Account will inspire the development of new supramolecular designs and creative approaches to crystal engineering that aid and abet the assembly of multifunctional HOFs with customizable properties. | Penghao Li Matthew R.Ryder J.Fraser Stoddart | 2020 | Accounts of Materials Research2020,1,1: | 2 |
| 3 | Self-assembled InAs quantum dots on InP nano-templates显示文摘 | J.Lefebvre P.J.Poole J.Fraser G.C.Aers D.Chithrani and R.L.Williams | | 0,,2: | 1 |
| 4 | Antropyloroduodenal, cholecystokinin and feeding responses to pulsatile and non‐pulsatile intraduodenal lipid infusion显示文摘 | R.VOZZO Y‐C.SU R. J.FRASER G. A.WITTERT M.HOROWITZ C. H.MALBERT A.SHULKES T.VOLOMBELLO I. M.CHAPMAN | 2002 | Neurogastroenterology & Motility2002,,1: | 1 |
| 5 | The Rise and Promise of Molecular Nanotopology显示文摘Molecular nanotopology—a term we coined recently—is a rapidly developing field of research that is emerging out of the confluence of chemical topology with the mechanical bond.When perusing the increased research activities in this field,it is clear that a new discipline is ready to receive recognition in its own right.In this Mini-Review,we address the historical development of chemical topology and describe how the rational design and practical synthesis of molecular links and knots with mechanical bonds. | Qing-Hui Guo Yang Jiao Yuanning Feng J.Fraser Stoddart | 2021 | CCS Chemistry2021,3,7: | 1 |
| 6 | Dendrimers—Branching out from curiosities into new technologies显示文摘 | Owen A. Matthews Andrew N. Shipway J.Fraser Stoddart | 1997 | Progress in Polymer Science1997,,1: | 1 |
| 7 | 单分子结中的有机自由基显示文摘空气稳定有机自由基的发现引起了人们对探究其在分子电子学和自旋电子学中应用的兴趣.这些自由基具有独特的开壳层电子结构,因而表现出特殊的电学特性.由于其较弱的旋轨耦合特性,也使得其成为自旋电子学的重要研究对象.此外,自由基还可以通过二聚、分子识别和机械互锁等分子间相互作用来构筑超分子器件.本文综述了空气稳定有机自由基在电子学及自旋电子学中的应用,通过详述其卓越的电磁性能来拓展启发分子设计的多样性.本综述还概述了超分子自由基的制备方法和相关性质的研究进展,拓宽了单分子研究的范围.此外,自由基介导的单分子反应是一个新兴的研究方向,本文也对该领域的未来发展方向进行了展望.通过阐明空气稳定有机自由基的应用潜力,本文将有望对分子电子学和自旋电子学的研究产生一定的指导意义. | 张雅琦 邱仁慧 屈恺 张成 J.Fraser Stoddart 陈洪亮 | 2024 | Science China Materials2024,67,3: | 0 |
| 8 | Reticular exploration of uranium-based metal-organic frameworks with hexacarboxylate building units显示文摘The rational reticular design of metal-organic frameworks(MOFs)from building units of known geometries is essential for enriching the diversity of MOF structures.Unexpected and intriguing structures,however,can also arise from subtle changes in the rigidity/length of organic linkers and/or synthetic conditions.Herein,we report three uranium-based MOF structures—i.e.,NU-135X(X=0,1,2)—synthesized from trigonal planar uranyl nodes and triptycene-based hexacarboxylate ligands with variable arm lengths.A new chiral 3,6-connected nuc net was observed in NU-1350,while the extended versions of the ligand led to 3-fold catenated MOFs(NU-1351 and NU-1352)with rare 3,6-connected cml-c3 nets.The differences in the topology of NU-1350 and NU-1351/NU-1352 could be attributed to the slight distortions of the shorter linker in the former from the ideal trigonal prism geometry to an octahedral geometry when coordinated to the trigonal planar uranyl nodes. | Zhijie Chen Penghao Li Xuan Zhang Mohammad Rasel Mian Xingjie Wang Peng Li Zhichang Liu Michael O’Keeffe J.Fraser Stoddart Omar K.Farha | 2021 | Nano Research2021,14,2: | 0 |
| 9 | J.Fraser Stoddart访谈 分子电子开关显示文摘随着时间的推移,我们的世界似乎在不断地变小,不仅如此,新的发明创造也在向着更小更精细的方向发展。然而,这些“小玩意儿”在发展的道路上总会遭遇瓶颈,至少在以摩尔定律(Moore’SLaw)为准规则的计算世界会这样。如果根据英特尔公司(1NTEL)创办人之一Gordon Moore的建议,即一个电脑芯片上所能容纳的晶体管数目每隔18-24个月增加一倍,那么一块硅片上所能承载的存储量,将在10年内达到物理极限。这必然导致了问题的产生:接下来该发展什么样的芯片呢?
在过去的20年中,人们从被称作分子计算技术或是分子电子技术上看到了希望。在这项技术中,分子扮演着硅半导体的角色。支持者们希望可以通过这项技术建立纳米级人造电子设备。虽然人们看到了这项新技术的巨大潜能,但是它的出现还是激发了怀疑者广泛的质疑。他们提出,直至目前,利用这项技术所实现的成果远远落后于人们对于这项技术的设想以及对于其前景的展望。
自分子电子这一概念诞生以来的20年中,英国化学家Fraser Stoddart一直是这一领域中最具影响力的人物。20世纪80年代,他确认了首批具有开关功能的高模合成分子——一个可以在任何二进制计算中承担计算任务的重要角色。一直以来,Stoddart教授在分子电子领域有着极其深远的影响力。截至发稿时,在最新ESI发布的近10年来被引用次数最多的化学家排行榜中,他以总计11000条引文,篇均引文40次的实力荣登第3名的宝座。1995年,他在《化学评论》上发表的名为《互锁与互绕的结构及超结构》的文章被引用了700次之多(见表1)。最近,每两个月更新的“热点论文(HotPapers)数据库”还特别刊登了近两年由Stoddart和他的同事发表的7篇高被引论文。
Stoddart~授出生于苏格兰首府爱丁堡,现年63岁。他曾就读于爱丁堡大学学习化学,并相继于1964年、1966年、1980年获得学士、博士以及科学博士(DoctorofScience)学位。在位于加拿大安大略湖的女王大学做了一段时间博士后研究员之后,Stoddart教授于1970年回到了英国,并以谢菲尔德大学化学讲师的身份开始了其独立研究生涯,直至1978年。此后的3年,他一直在位于朗科恩的帝国化学工业实验室(lmperial Chemical Industries’Corporate Laboratory)工作,之后又重返谢菲尔德。1990年Stoddart教授转至伯明翰大学,并作为有机化学教授在那里工作,直至接受邀请前往美国。自1997年开始,Stoddart教授一直在美国洛杉矶加州大学负责有机化学和纳米体系科学方面的研究,并担任加州纳米体系研究所(CNSI)的主管。
下面是Stoddart教授在其美国洛杉矶加州大学(UCLA)的办公室接受Science Watch采访时的内容。 | J.Fraser Stoddart 朱海峰 | 2006 | 科学观察2006,1,2: | 0 |
| 10 | Whither Second-Sphere Coordination?显示文摘The properties of coordination complexes are dictated by both the metals and the ligands.The use of molecular receptors as second-sphere ligands enables significant modulation of the chemical and physical properties of coordination complexes.In this minireview,we highlight recent advances in functional systems based on molecular receptors as second-sphere coordination ligands,as applied in molecular recognition,synthesis of mechanically interlocked molecules,separation of metals,catalysis,and biomolecular chemistry.These functional systems demonstrate that second-sphere coordination is an emerging and very promising strategy for addressing societal challenges in health,energy,and the environment. | Wenqi Liu Partha J.Das Howard M.Colquhoun J.Fraser Stoddart | 2022 | CCS Chemistry2022,4,3: | 0 |
| 11 | Mapping frontier molecular orbitals using photocurrents显示文摘In the regime of coherent transport, the conductance of a molecular junction is governed(Fig. 1a) by the probability of electron transmission between the metal electrodes, a physica property which is affected significantly by the hybridization of frontier molecular orbitals(FMOs) with the continuous band of energy levels on the electrodes. | Ping Zhou J.Fraser Stoddart Hongliang Chen | 2023 | Science China Materials2023,66,9: | 0 |
| 12 | Making chiral molecular knots and links stereospecifically显示文摘Topological structures[1,2],i.e.,knots and links,grace the macroscopic world in the form of biomorphs and artificial tools,all the way down to the molecular scale,such as catenated DNA and phytochromes.Chirality inherently exists in structures in which mirror-image topologies cannot be superimposed upon themselves without disassembling the topological structures. | Huang Wu Chun Tang Long Zhang J.Fraser Stoddart | 2023 | National Science Review2023,10,3: | 0 |