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311篇 您的检索式:作者名="Verpoorte"
    题名 作者 年代 出处 被引量
1金属氧化物@金属有机骨架复合材料研究进展显示文摘金属有机骨架(Metal-Organic Framework,MOF)复合材料是一种新型功能性材料,其中金属氧化物@MOF复合材料因结合了金属氧化物和MOFs的许多特性而受到人们的广泛关注,成为近年来MOFs材料研究的一个重要方向。本文综述了金属氧化物@MOF复合材料制备方法的研究进展,主要包括外延生长法、气相沉积法、模板法等,并分析了它们各自的优缺点;概述了金属氧化物@MOF复合材料在催化、传感、生物医药、吸附与分离方面的具体应用性能,以及在电化学研究领域的潜在应用;并提出今后金属氧化物@MOF复合材料研究的主要方向是开发简单高效的制备方法、选取新功能性金属氧化物以及探索复合材料的其它新型结构,以拓展其在工业上的应用。张攀 周奎 HAEMCHUEN Somboon 陈宬 VERPOORT Francis 2018应用化学2018,35,4:10
2聚双环戊二烯的催化共聚改性研究进展显示文摘介绍了分别在单催化、双催化体系作用下以环烯烃、链烯烃为原料催化共聚改性聚双环戊二烯(PDCPD)的机理,并综述了不同催化体系对PDCPD共聚改性物的阻燃性,冲击强度、拉伸强度及热稳定性等影响的国内外研究进展。姜付本 陈琦 姜啟亮 陈宬 Verpoort Francis 2017热固性树脂2017,32,4:5
3Nurturing the marriages of single atoms with atomic clusters and nanoparticles for better heterogeneous electrocatalysis显示文摘Single-atom catalysts,featuring some of the most unique activities,selectivity,and high metal utilization,have been extensively studied over the past decade.Given their high activity,selectivity,especially towards small molecules or key intermediate conversions,they can be synergized together with other active species(typically other single atoms,atomic clusters,or nanoparticles)in either tandem or parallel or both,leading to much better performance in complex catalytic processes.Although there have been reports on effectively combining the multiple components into one single catalytic entity,the combination and synergy between single atoms and other active species have not been reviewed and examined in a systematic manner.Herein,in this overview,the key synergistic interactions,binary complementary effects,and the bifunctional functions of single atoms with other active species are defined and discussed in detail.The integration functions of their marriages are in-vestigated with particular emphasis on the homogeneous and heterogeneous combinations,spatial distribution,synthetic strategies,and the thus-derived outstanding catalytic performance,together with new light shined on the catalytic mechanisms by zooming in several case studies.The dynamic nature of each of the active species and in particular their interactions in such new catalytic entities in the heterogeneous electrocatalytic processes are visited,on the basis of the in situ/operando evidence.Last,we feature the current chal-lenges and future perspectives of these integrated catalytic entities that can offer guidance for advanced catalyst design by the rational combination and synergy of binary or multiple active species.Lei Zhang Jiawei Zhu Xin Li Shichun Mu Francis Verpoort Junmin Xue Zongkui Kou John Wang 2022Interdisciplinary Materials2022,1,1:3
4降冰片烯及其衍生物开环易位聚合的研究进展显示文摘环烯烃开环易位聚合(ROMP)是指在金属催化剂存在下,环烯烃中的碳碳双键断裂并重新结合形成新的分子,得到的聚合物中留有不饱和双键,具有活性聚合的特点。ROMP是改造碳碳双键最有效的手段之一,极具特色且广泛应用于高分子材料与有机分子的合成。关于环烯烃ROMP研究早在20世纪50年代就已开始,当时的研究主要集中在以Ti、Re、W、Mo等过渡金属配合物组成的Ziegler-Natta催化体系引发环烯烃ROMP。20世纪80年代中期以后,研究则以亚烷基类或卡宾型类催化剂为主,其引发环烯烃ROMP的机理更加清晰。随着结构明确、稳定高效的环烯烃ROMP催化剂的开发与完善,该领域的研究焦点开始转向环烯烃ROMP适用单体的拓展以及所得聚合物的应用。在环烯烃ROMP研究中,降冰片烯及其衍生物是研究最多和应用最广的一类单体,这是因为它们的反应活性较高,来源丰富,价格也不昂贵。除研究拓展ROMP适用单体外,研究者主要从降冰片烯基单体的空间位阻、化学构型、侧基极性以及与其他环烯烃或降冰片烯基单体共聚改性等方面不断进行尝试,同时充分发挥环烯烃ROMP优势,与其他聚合方法联用,不断改善所得聚合物的性能并将其应用于不同研究领域。降冰片烯及其衍生物ROMP在阻燃材料、交换膜、纳米材料、生物医药等领域已取得一系列研究成果,其中在阻燃材料领域研究最早且许多产品已经工业化。在交换膜领域,由于降冰片烯基聚合物膜的热稳定性、耐酸碱性和电导率均较好,目前的研究主要是探索如何在燃料电池中获得应用。纳米材料是近年来最热门的研究领域之一,降冰片烯基纳米金属聚合物材料和纳米磁性聚合物材料等已有初步应用。在生物医药领域,降冰片烯及其衍生物极具发展前景,目前的研究主要集中在药物传输材料,已有初步的研究成果,但要实现工业化尚待进一步研究。此外,基于降冰片烯及其衍生物的接枝聚合物、嵌段聚合物、液晶聚合物、导电聚合物等也获得人们越来越多的关注。本文简要介绍了降冰片烯及其衍生物ROMP的反应机理,以及ROMP催化剂从多组分到钼、钨系再到钌系等几个发展阶段,详细综述了降冰片烯及其衍生物ROMP在上述若干领域的研究进展,并在此基础上简要探讨了今后研究与开发应用的新方向。姜啟亮 陈琦 姜付本 陈宬 VERPOORT Francis 2018材料导报2018,32,7:2
5Analysis of the Interface between Primary and Secondary Metabolism in Catharanthus roseus Cell Cultures Using ^13C-Stable Isotope Feeding and Coupled Mass Spectrometry显示文摘Dear Editor, The tropical plant Madagascar periwinkle Catharanthus roseus (L.) G.Don is a rich source of plant-derived medicinal terpenoid indole alkaloids (TIAs),including the anti-hypertensive ajmalicine,the sedative compound serpentine,and the anticancer drugs vinblastine and vincristine.However,the latter two compounds are produced in C roseus plants only in very low amounts.Elicitors such as hormones (e.g.jasmonates or salicylic acid) activate plant natural defense responses,including increased secondary metabolite production (EI-Sayed and Verpoorte,2007;Lackman et al.,2011).There are two different metabolic pathways for the biosynthesis of terpenoids leading to the formation of the Cs central precursor isopentenyl diphosphate (IPP),namely the classical cytosolic mevalonate pathway and the mevalonate-independent plastidic 2-C-methyI-D-erythritol 4-phosphate (MEP) pathway.Carla Antonio Natali R. Mustafa Sonia Osorio Takayuki Tohge Patrick Giavalbco Lothar Willmitzer Heiko Rischer Kirsi-Marj Oksman-Caldentey Robert Verpoorte Alisdair R. Fernie 2013Molecular Plant2013,6,2:2
6锂参与合成MOF-5用于CO2/CH4混合气体分离显示文摘利用溶剂热法合成了不同锂含量的MOF-5(x Li-MOF-5,x=0,1,3,5)。在MOF-5结晶过程中,锂离子被合并入其骨架结构中。实验表明,合并入骨架的锂能够改变MOF-5的结构和表面化学性质。不同的x Li-MOF-5能够不同程度降低骨架相互穿插的程度从而导致其吸附分离能力的大幅改变。其中,3Li-MOF-5具有最高的二氧化碳捕获能力(5.47 mmol·g-1),对40%CO2/60%CH4混合气体具有最优吸附选择性。Somboon Chaemchuen 周奎 姚宸 罗志雄 Francis Verpoort 2015无机化学学报2015,31,3:2
7Planar chips technology for miniaturization and integration of separation techniques into monitoring systems:capillary electrophoresis on a chip 显示文摘MANZ A HARRISON D J VERPOORTE E M J 1992Chromatography1992,593,:2
8Development and characterization of a microfluidic glucose sensing system based on an enzymatic microreactor and chemiluminescence detection显示文摘Chemiluminescence detection was developed as an alternative to amperometric detection for glucose analysis in a portable, microfluidics-based continuous glucose monitoring system. Amperometric detection allows easy determination of hydrogen peroxide, a product of the glucose oxidase-catalyzed reaction of glucose with oxygen, by oxidation at a microelectrode. However, (micro)electrodes in direct contact with physiological sample are subject to electrode fouling, which leads to signal drift, decreased reproducibility and shortened detector lifetimes. Moreover, there are a few species present in the body (e.g. ascorbic acid, uric acid) which can undergo oxidation at the same applied potential as hydrogen peroxide. These species can thus interfere with the glucose measurement, reducing detection specificity. The rationale for exploring chemiluminescence as opposed to amperometric detection is thus to attempt to improve the lifetime and reproducibility of glucose analysis for monitoring purposes, while reducing interference caused by other chemicals in the body. The study reported here represents a first step in this direction, namely the realization of a microfluidic device with integrated silicon photodiode for chemiluminescence detection of glucose. This microflow device uses a chaotic mixing approach to perform enzymatic conversion of glucose, followed by reaction of the hydrogen peroxide produced with luminol to produce light at 425 nm. The chemiluminescence reaction is catalyzed by horseradish peroxidase in the presence of iodophenol. The performance of the fabricated chip was characterized to establish optimal reaction conditions with respect to sample and reagent flow rates, pH, and concentrations. A linear calibration curve was obtained for current response as a function of glucose concentration in the clinically relevant range between 2 and 10 mM, with a sensitivity of 39 pA/mM (R = 0.9963, one device, n = 3) and a limit of detection of 230 μM (S/N = 3).MOON B.-U. de VRIES M.G. WESTERINK B.H.C. VERPOORTE E. 2012Science China Chemistry2012,55,4:2
9Geraniol 10-hydroxylase 1 1 The nucleotide sequence newly reported in this paper has been deposited in the GenBank/EMBL data banks with the accession number AJ251269 , a cytochrome P450 enzyme involved in terpenoid indole alkaloid biosynthesis显示文摘Graziella Collu Nehir Unver Anja M.G. Peltenburg-Looman Robert van der Heijden Robert Verpoorte Johan Memelink 2001FEBS Letters2001,,2:2
10Microfluidic chips for clinical and forensic analysis 显示文摘Verpoorte E 2002Electrophoresis2002,23,5:1
11Isopentenyl diphosphate isomerase and prenyltransferase activities in rubiaceous and apocynaceous cultures显示文摘Ramos V A C Vander H R Verpoorte R 1998Phytochemistry1998,48,:1
12Terpenoid indole alkaloid profile changes in Catharanthus pusillus during development显示文摘Zarate R Dirks C van der Heijden R Verpoorte R 2001Plant Sci2001,160,5:1
13Biotechnology for the production of plant secondary metabolites显示文摘R. Verpoorte A. Contin J. Memelink 2002Phytochemistry Reviews2002,,1:1
14Immobilization of muhifunctional schiff base containing ruthenium complexes on MCM-41显示文摘Clercq B D Lefebvre F Verpoort F 2003Appl Catal A2003,247,:1
15Elicitor signal transductionleading to production of plant secondary metabolites显示文摘Zhao J Davis L C Verpoorte R 2005Biotech-nol Adv2005,23,4:1
16Plant biotechnology for the production of alkaloids= present status and prospert 显示文摘Verpoorte R Van der Heijden R Schripsema J 1990J Nat Prod1990,56,:1
17Metabolomics:back to basics显示文摘VERPOORTE R CHOI Y MUSTAFA N etal 2008PhytochemistryReviews2008,7,3:1
18Planar chips technology for miniaturization and integration of separation techniques into monitoring systems 显示文摘Manz A Hurrison DJ Verpoorte EMJ 1992Chromatogr1992,593,12:1
19Grow th and alkaloid contents in leaves of Tabemaem ontana pachysiphon Stapf(Apocynaceae) as influenced by light in tensity,water and nutrient supply显示文摘Hoeft M Verpoorte R and Beck E 1986Oecologia1986,107,:1
20Engineering secondary metabolite production in plants 显示文摘VERPOORTE R MEMELINK J 2002Curr Opinbiotechnol2002,13,2:1
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