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A new class of crystalline X-ray induced photochromic materials assembled from anion-directed folding of a flexible cation

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Chinese Chemical Letters 2024年第8期35卷 554-557页

作者： Hong-Jin Liao Zhu Zhuo Qing Li Yoshihito Shiota jonathan P.hill Katsuhiko Ariga Zi-Xiu Lu Lu-Yao Liu Zi-Ang Nan Wei Wang You-Gui Huang CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstitutesChinese Academy of SciencesXiamen 361021China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China Institute for Materials Chemistry and Engineering Kyushu UniversityFukuoka 819-0395Japan World Premier International(WPI)Center for Materials Nanoarchitectonics(MANA) National Institute for Materials Science(NIMS)Ibaraki 305-0044Japan

Electron-deficient viologens are widely used as ligands or structure-directing agents(SDAs)to synthesize crystalline X-ray induced photochromic ***,a new rational strategy of anion-directed fold-ing a flexible cation(H_(2)imb)^(2+)((H_(2)imb)^(2+)=di-protonated 2,3-bis(imidazolin-2-yl)-2,3-dimethylbutane)has been ***-donating Cl−and(ZnCl4)2−are used to direct folding a flexible electron-deficient(H_(2)imb)^(2+)*** complexes(H_(2)imb)(NO_(3))2(1),(H_(2)imb)Cl2·H_(2)O(2),and(H_(2)imb)ZnCl4(3)have been synthesized in which(H_(2)imb)^(2+)crystallize in an anti-conformation,88.8°-gauche,and 51.8°-gauche,*** contrary to X-ray silent complex 1,X-ray induced photochromism has been achieved in both complex 2 and *** intermolecular charge-transfer mechanism has been elucidated and the anion directed folding of(H_(2)imb)^(2+)has been validated to be critical to yield colored long-lived charge-separated states.

关键词： Supramolecular Photochromic X-ray induced Anion-directed folding Electron-deficient viologens

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Diporphyrin tweezer for multichannel spectroscopic analysis of enantiomeric excess

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Frontiers of Chemical Science and Engineering 2020年第1期14卷 28-40页

作者： Daniel T.Payne Mandeep KChahal Vaclav Brezina Whitney A.Webre Katsuhiko Ariga Francis D’Souza Jan Labuta jonathan P.hill WPI Center for Materials Nanoarchitectonics National Institute for Materials ScienceIbaraki 305-0044Japan Department of Macromolecular Physics Faculty of Mathematics and PhysicsCharles University18000 PragueCzech Republic Department of Chemistry University of North TexasDentonTX 76203USA Department of Advanced Materials Science Graduate School of Frontier SciencesThe University of TokyoChiba 277-8561Japan

Chiral 1,1’-binaphthyl-linked diporphyrin‘tweezers’(R)-1/(S)-1 and the corresponding zinc(II)complexes(R)-2/(S)-2 were prepared as chiral host molecules,and their utility for chiral analyses(especially enantiomeric excess(ee)determinations)were ***(1-n-dodecyl)porphyrins were used for the first time as the interacting *** capabilities of the diporphyrin tweezers were investigated by titrations with(R,R)-and(S,S)-cyclohexane-1,2-diamine(CHDA).The host molecules could be used as multichannel probes of ee by using UVvis,circular dichroism(CD),fluorescence emission and 1H nuclear magnetic resonance(1 H-NMR)*** configurations could also be differentiated using CD or 1HNMR *** three optical techniques give good resolution of ee with reasonable sensitivity considering the low concentrations used(ca.10^-6 mol·L^-1).The ee determination of CHDA enantiomers using NMR spectroscopy is also possible because of the reasonably well separated resonances in the case of(R,R)-and(S,S)-***-metallated(R)-1/(S)-1 hosts could not be used to detect chiral information in a strongly acidic chiral *** work demonstrates the utility of 1,1’-binapthyllinked chiral hosts for chiral analysis of ditopically interacting enantiomers.

关键词： porphyrin dimer chirality enantiomeric excess CD fluorescence

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Molecular rotor based on an oxidized resorcinarene

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Organic Chemistry Frontiers 2022年第1期9卷 39-50页

作者： Daniel T.Payne Jan Labuta Zdeněk Futera Václav Březina Lenka Hanyková Mandeep K.Chahal jonathan P.hill International Center for Materials Nanoarchitectonics National Institute for Materials ScienceNamiki 1-1TsukubaIbaraki 305-0044Japan bInternational Center for Young Scientists National Institute for Materials ScienceNamiki 1-1TsukubaIbaraki 305-0044Japan Institute of Physics Faculty of ScienceUniversity of South BohemiaBranišovská1760ČeskéBudějovice 37005Czech Republic Faculty of Mathematics and Physics Charles UniversityV Holešovičkách 218000 Prague 8Czech Republic

Molecular rotors are an important class of dynamic molecules which have been studied not only for their possible uses as components of molecular machines but also because of potential applications as probes of local viscosity in biological media,especially self-assembled *** the former,factors affecting rotational motility are critical while for the latter the rotor activity must be complexed with an output signal(often fluorescence)for reporting of local *** single stator-double rotor activity of an oxidized resorcinarene(fuchsonarene)macrocycle containing unsaturated hemiquinonoid groups at its meso positions was *** contain two hemiquinonoid substituents at diagonally-opposed meso-positions with two electron rich phenol groups at the remaining meso-positions between the hemiquinonoid *** meso-substituents are in proximity at one side of the resorcinarene macrocycle(so-called rccc-type isomer)with rotational activity of the phenol *** rates of the phenol moieties can be controlled by varying temperature,solvent polarity and acidity of the medium of study with rotation being thermally activated in neutral and acidic media and tunable in the range from 2 s^(−1) to 20000 s^(−1).Experimental and computational data indicate that rotation of the mobile phenol meso-substituents is remotely affected by interactions with acidic solvents at the carbonyl CvO groups of macrocyclic acetyloxy groups,which occurs with the emergence of a lower energy electronic absorption band whose intensity is correlated with both the acidity of the medium and the rotation rate of the phenol ***-dependent DFT calculations suggest that the low energy band is due to a molecular conformational adjustment affecting electronic conjugation caused by strong interaction of macrocyclic acetyloxy carbonyl groups with the acid *** work presents a molecular mechanical model for estimating solution acidity a

关键词： substituent rotation oxidized

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Deformable microlaser force sensing

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Light(Science & Applications) 2024年第6期13卷 1196-1209页

作者： Eleni Dalaka Joseph Shill jonathan H.H.Booth Anna Popczyk Stefan R.Pulver Malte C.Gather Marcel Schubert Centre of Biophotonics SUPASchool of Physics and AstronomyUniversity of St AndrewsNorth HaughSt AndrewsUK Humboldt Centre for Nano-and Biophotonics Department of ChemistryUniversity of CologneKölnGermany School of Psychology and Neuroscience University of St AndrewsSt Mary’s QuadSouth StreetSt AndrewsUK Institute for Bioengineering of Catalonia BarcelonaSpain

Mechanical forces are key regulators of cellular behavior and function,affecting many fundamental biological processes such as cell migration,embryogenesis,immunological responses,and pathological *** force sensors and imaging techniques have been developed to quantify these otherwise invisible forces in single cells and in ***,current techniques rely heavily on high-resolution microscopy and do not allow interrogation of optically dense tissue,reducing their application to 2D cell cultures and highly transparent biological ***,we introduce DEFORM,deformable microlaser force sensing,a spectroscopic technique that detects sub-nanonewton forces with unprecedented spatio-temporal *** is based on the spectral analysis of laser emission from dye-doped oil microdroplets and uses the force-induced lifting of laser mode degeneracy in these droplets to detect nanometer *** validation by atomic force microscopy and development of a model that links changes in laser spectrum to applied force,DEFORM is used to measure forces in 3D and at depths of hundreds of microns within tumor spheroids and late-stage Drosophila *** furthermore show continuous force sensing with single-cell spatial and millisecond temporal resolution,thus paving the way for non-invasive studies of biomechanical forces in advanced stages of embryogenesis,tissue remodeling,and tumor invasion.

关键词： invasion otherwise hundreds

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冠状动脉内影像学临床应用专家共识(第一部分):对冠状动脉介入治疗的指导与优化

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中华心血管病杂志 2019年第1期47卷 5-25页

作者： Lorenz Raber Gary S Mintz Konstantinos C Koskinas Thomas W Johnson Niels R Holm Yoshinubo Onuma Maria D Radu Michael Joner Bo Yu Haibo Jia Nicolas Meneveau Jose M.de la Torre Hemandez Javier Escaned jonathan hill Francesco Prati Antonio Colombo Carlo di Mario Evelyn Regar Davide Capodanno William Wijns Robert A Byme Giulio Guagliumi 瑞士伯尔尼大学医院心内科法国让·明乔兹大学医院心内科法国勃艮第弗朗什孔德大学西班牙瓦尔德里亚马克大学医院心内科西班牙圣卡洛斯临床医院和康普顿斯大学英国国王学院医院心内科意大利圣乔万尼医院心内科意大利圣拉斐尔科学研究所介入科、心胸血管科意大利卡雷奇大学医院结构介入心脏病学瑞士苏黎世大学医院心血管外科意大利卡塔尼亚大学路得里医院心胸血管和移植科、维托里奥诊所美国纽约心血管研究基金会爱尔兰萨尔塔大学医疗集团、爱尔兰戈尔韦国立大学兰贝转化医学和康复研究意大利教皇约翰二十三世医院心内科英国布里斯托尔心脏研究所、布里斯托尔大学医院国民健康基金会信托基金丹麦奥胡斯大学医院心内科荷兰鹿特丹伊拉斯姆斯大学医疗中心心脏介入科、胸部中心丹麦哥本哈根大学国王医院心脏中心德国慕尼黑技术大学德国慕尼黑心脏中心德国慕尼黑心血管研究中心、合作网站慕尼黑心脏联盟中国哈尔滨医科大学附属第二医院心内科、教育部心肌缺血重点实验室

欧洲心血管介入协会(EAPCI)专家组系统总结了血管内超声(IVUS)和光学相干断层成像(OCT)这两种血管内影像学检查临床应用指征的现有证据,提供了关于IVUS和OCT指导经皮冠状动脉介入治疗(PCI)的应用价值,并明确了最可能从腔内影像学指导的... 详细信息

欧洲心血管介入协会(EAPCI)专家组系统总结了血管内超声(IVUS)和光学相干断层成像(OCT)这两种血管内影像学检查临床应用指征的现有证据,提供了关于IVUS和OCT指导经皮冠状动脉介入治疗(PCI)的应用价值,并明确了最可能从腔内影像学指导的介入治疗中获得临床收益的患者或病变类型,同时详细论述了PCI前如何使用IVUS或OCT优化支架尺寸(支架长度和直径)和手术策略的选择。此外,专家推荐对支架失败(支架内再狭窄或支架内血栓形成)的患者应常规进行冠状动脉内影像学检查,并首选OCT。最后,重点论述了IVUS和OCT在指导PCI和评估支架失败两个方面的优势和局限性,并对未来需要深入研究的领域进行了展望。

关键词：冠状动脉疾病超声检查介入性体层摄影术光学相干经皮冠状动脉介入治疗

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功能光电分子的表面分散与STM研究

功能光电分子的表面分散与STM研究

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中国真空学会2012学术年会

作者：邝艳敏耿锋张尧朱三娥 André Gourdon jonathan P.hill 王官武董振超中国科学技术大学微尺度物质科学国家实验室

二萘嵌苯分子由于具有高荧光效率等优良的光电性质,在电子和光电元件中有着广泛的应用。化学修饰的二萘嵌苯分子衍生物由于具有新的光电特性在纳米光电子学和纳米电子学领域也得到了广泛的研究。在本文中,我们在超高真空环境下利用闪热...

二萘嵌苯分子由于具有高荧光效率等优良的光电性质,在电子和光电元件中有着广泛的应用。化学修饰的二萘嵌苯分子衍生物由于具有新的光电特性在纳米光电子学和纳米电子学领域也得到了广泛的研究。在本文中,我们在超高真空环境下利用闪热脱吸附方法5将具有四脚架结构的二萘嵌苯分子衍生物沉积到金属衬底上,并利用STM对吸附的分子进

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ATI Video Xpression:可靠的图形及平稳的视频

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个人电脑 1996年第10期2卷 38-38页

作者： jonathan hill 陈坤荣

价格239美元的ATI Video Xpression是一个基于DRAM的图形卡,以一个不可战胜的价格提供给用户合理的图形性能和大大改进了的视频播放能力。 Video Xpression是一系列多媒体卡中的第一个,它们都基于ATI-264VT Mach64加速器芯片。此卡独立... 详细信息

价格239美元的ATI Video Xpression是一个基于DRAM的图形卡,以一个不可战胜的价格提供给用户合理的图形性能和大大改进了的视频播放能力。 Video Xpression是一系列多媒体卡中的第一个,它们都基于ATI-264VT Mach64加速器芯片。此卡独立的垂直与水平行缓冲区使得它能对视口同时进行垂直与水平缩放。其它同等价格的视频加速器则通常修改一个方向而重复另一方向的象素,这样导致有人工痕迹。

关键词：加速器垂直与水平行缓冲区视频播放图形性能调幅收音机 Windows95 驱动程序按比例变化视频回放

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Diamond Stealth 64开创桌面视频新境界

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个人电脑 1995年第9期1卷 17-17页

作者： jonathan hill 伍颖文

Diamond Multimedia Systems以其389美元的新款Stealth 64 Pro VideoVRAM卡重新定义了视频在台式PC的显示方式。这种图形和视频加速卡的结合体可将全运动视频画面扩展至全屏,而处理时并不产生丢帧或同步错误。 Stealth 64 Pro Video功... 详细信息

Diamond Multimedia Systems以其389美元的新款Stealth 64 Pro VideoVRAM卡重新定义了视频在台式PC的显示方式。这种图形和视频加速卡的结合体可将全运动视频画面扩展至全屏,而处理时并不产生丢帧或同步错误。 Stealth 64 Pro Video功能强大但价格低廉,其关键在于S3Vision 968加速芯片。该芯片借助了其前身Vision964芯片的成功之道,同时增加了针对视频的硬件放缩、颜色空间转换和过滤支持。Stealth的驱动程序符合DCI规范,因此对这类设备的请求由Vision968芯片接管。

关键词：桌面视频 Visio 颜色空间转换颜色深度驱动程序 System 芯片同步错误成功之道显示方式

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Therapeutic mechanisms and routes of delivery of mesenchymal stem cells in veterinary medicine:A point of view

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BIOCELL 2022年第5期46卷 1173-1176页

作者： AMANDA BARACHO TRINDADE hill jonathan EDWIN BARACHO TRINDADE hill Centro Universitário Max Planck IndaiatubaBrazil CellTech-Stem Cell Technologies CampinasBrazil

Mesenchymal stem cells(MSCs)represent an important tool in veterinary regenerative medicine due to their ability to home to injury sites and secrete molecules that regulate niches into regenerative *** cell therapy depends on many factors,including choice of administration route and application of understanding of cell potency and their therapeutic *** this point of view,the authors leverage the tumultuous history of the field to demonstrate the need for clinicians to continually update themselves as new discoveries are made in order to avoid misalignments in the future,especially regarding administration routes and dose frequency,as well as to explore recent insights into MSC plasticity,therapeutic mechanisms,and cell delivery systems.

关键词： Cell therapy Application Injection Pharmacodynamics Pharmacokinetics

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A soft,high-density neuroelectronic array

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npj Flexible Electronics 2023年第1期7卷 131-138页

作者： Kyung Jin Seo Mackenna hill Jaehyeon Ryu Chia-Han Chiang Iakov Rachinskiy Yi Qiang Dongyeol Jang Michael Trumpis Charles Wang jonathan Viventi Hui Fang Thayer School of Engineering Dartmouth CollegeHanoverNH 03755USA Department of Biomedical Engineering Duke UniversityDurhamNC 27708USA Department of Electrical and Computer Engineering Northeastern UniversityBostonMA 02115USA

Techniques to study brain activities have evolved dramatically,yet tremendous challenges remain in acquiring high-throughput electrophysiological recordings minimally ***,we develop an integrated neuroelectronic array that is filamentary,highdensity and ***,with a design of single-transistor multiplexing and current sensing,the total 256 neuroelectrodes achieve only a 2.3×0.3mm^(2)area,unprecedentedly on a flexible substrate.A single-transistor multiplexing acquisition circuit further reduces noise from the electrodes,decreases the footprint of each pixel,and potentially increases the device’s *** filamentary neuroelectronic array also integrates with a rollable contact pad design,allowing the device to be injected through a syringe,enabling potential minimally invasive array *** acute auditory experiments in rats validate the ability of the array to record neural signals with high tone decoding ***,these results establish soft,high-density neuroelectronic arrays as promising devices for neuroscience research and clinical applications.

关键词： electronic high Together

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