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Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials最新文献

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Charge transfer in intercalated C60 peapods 插层C60豆荚中的电荷转移
Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials Pub Date : 2002-10-02 DOI: 10.1063/1.1514087
T. Pichler, Á. Kukovecz, H. Kuzmany, H. Kataura, Y. Achiba
{"title":"Charge transfer in intercalated C60 peapods","authors":"T. Pichler, Á. Kukovecz, H. Kuzmany, H. Kataura, Y. Achiba","doi":"10.1063/1.1514087","DOIUrl":"https://doi.org/10.1063/1.1514087","url":null,"abstract":"We report on the charge transfer in intercalated C60 peapods as a function of doping. A competition between a charge transfer to the SWCNT pods and one to the C60 peas is observed. At low intercalation levels the charge transfer is predominantly to the SWCNT pods. This leads to a shift of the Fermi level beyond the third van Hove singularity of the semiconducting tubes for potassium intercalation (n‐doping) and beyond the first singularity of the metallic tubes for FeCl3 intercalation (p‐doping), respectively. In addition at high levels of potassium intercalation the C60 pods are charged up to C606− and form a metallic one dimensional polymer.","PeriodicalId":196292,"journal":{"name":"Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials","volume":" 55","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132188301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Towards DNA‐Mediated Self Assembly of Carbon Nanotube Molecular Devices 碳纳米管分子器件DNA介导的自组装研究
Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials Pub Date : 2002-10-02 DOI: 10.1063/1.1514159
K. Williams, P. Veenhuizen, B. G. Torre, R. Eritja, C. Dekker
{"title":"Towards DNA‐Mediated Self Assembly of Carbon Nanotube Molecular Devices","authors":"K. Williams, P. Veenhuizen, B. G. Torre, R. Eritja, C. Dekker","doi":"10.1063/1.1514159","DOIUrl":"https://doi.org/10.1063/1.1514159","url":null,"abstract":"We report covalent coupling of peptide nucleic acid (PNA) to ropes of carboxylated, single‐walled, carbon nanotubes. Subsequent hybridization of these functionalized nanotubes with DNA was investigated by atomic force microscopy (AFM). Nanotubes with duplex DNA attached to their ends were observed. We expect that the synthesis of these oligonucleotide‐derivatized nanotubes is an important first step important toward uniting the recognition capabilities of DNA with the unique electronic properties of carbon nanotubes.","PeriodicalId":196292,"journal":{"name":"Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115267367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
The Effect of Addend Variation on the Solubility of Single‐Wall Carbon Nanotubes 加数变化对单壁碳纳米管溶解度的影响
Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials Pub Date : 2002-10-02 DOI: 10.1063/1.1514081
J. Abraham, A. Hirsch, F. Hennrich, M. Kappes, A. Dziakova, R. Graupner, L. Ley
{"title":"The Effect of Addend Variation on the Solubility of Single‐Wall Carbon Nanotubes","authors":"J. Abraham, A. Hirsch, F. Hennrich, M. Kappes, A. Dziakova, R. Graupner, L. Ley","doi":"10.1063/1.1514081","DOIUrl":"https://doi.org/10.1063/1.1514081","url":null,"abstract":"The work we present here is based on a variety of Single Walled Carbon Nanotube‐derivatives which were synthesized via the known nitrene reaction. All of the SWCNT‐derivatives were characterized by UV/Vis‐NIR, XPS, AFM and 1H‐NMR spectroscopy. With this variety of new SWCNT‐derivatives it was possible to work out a detailed study on the effect of the addend on the solubility of SWCNTs in various organic solvents.","PeriodicalId":196292,"journal":{"name":"Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126337902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Field Emission from Multiwalled Carbon Nanotubes 多壁碳纳米管的场发射
Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials Pub Date : 2002-10-02 DOI: 10.1063/1.1514180
M. Sveningsson, M. Jönsson, O. Nerushev, F. Rohmund, E. Campbell
{"title":"Field Emission from Multiwalled Carbon Nanotubes","authors":"M. Sveningsson, M. Jönsson, O. Nerushev, F. Rohmund, E. Campbell","doi":"10.1063/1.1514180","DOIUrl":"https://doi.org/10.1063/1.1514180","url":null,"abstract":"Films of multi‐walled carbon nanotubes are very efficient cathodes for field emission devices. Films are grown by thermal chemical vapour deposition on silicon substrates with iron as a catalyst particle. Different types of films are investigated: vertically aligned MWNT with clean and coated nanotube sidewalls. SEM, TEM and Raman spectroscopy has been used in order to determine the structure of the different films. The results show that the aligned MWNT films have excellent field emission properties with high emission current densities and low turn‐on and threshold fields. They also show that the presence of a surface coating with amorphous carbon has no impact on the efficiency of the field emission. The current density as a function of applied electric field (on multiple cycles) is reproducible up to a value of 1 mA/cm2. Exceeding this value leads to light emission from the carbon nanotube film at the investigated spot. Spectral measurements of this light shows a purely blackbody radiation effect with ...","PeriodicalId":196292,"journal":{"name":"Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129986503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Phonon softening in metallic nanotubes by a Peierls' like mechanism 金属纳米管中声子的类佩尔斯软化机制
Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials Pub Date : 2002-10-02 DOI: 10.1063/1.1514143
G. Kresse, O. Dubay, H. Kuzmany
{"title":"Phonon softening in metallic nanotubes by a Peierls' like mechanism","authors":"G. Kresse, O. Dubay, H. Kuzmany","doi":"10.1063/1.1514143","DOIUrl":"https://doi.org/10.1063/1.1514143","url":null,"abstract":"Density functional theory in the local approximation is used to study the radial dependency of the vibrational frequencies of single‐wall carbon nanotubes in the G band (1500–1600 cm−1) . In metallic nanotubes, the longitudinal A1 mode is found to be significantly softer than in insulating tubes or graphite. The mechanism that leads to the mode softening is reminiscent of the driving force inducing Peierls distortions, but the energy gained by opening the gap is not sufficient for a static lattice distortion. Instead, the corresponding vibrational frequency is lowered.","PeriodicalId":196292,"journal":{"name":"Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials","volume":"186 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116394507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Electronic Structure and Charge Distribution in the C60‐FET C60‐FET中的电子结构和电荷分布
Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials Pub Date : 2002-10-02 DOI: 10.1063/1.1514108
S. Wehrli, D. Poilblanc, M. Rice, M. Sigrist
{"title":"Electronic Structure and Charge Distribution in the C60‐FET","authors":"S. Wehrli, D. Poilblanc, M. Rice, M. Sigrist","doi":"10.1063/1.1514108","DOIUrl":"https://doi.org/10.1063/1.1514108","url":null,"abstract":"We study the charge profile of a C60‐FET (field effect transistor) as used in the experiments of Schon, Kloc and Batlogg. In the first part we consider the charge profile in the interface layers. We find that the induced charge is spread out over several layers at low doping and becomes confined to the first layer at high doping, i.e. the regime where superconductivity is observed. In the second part we refine our model in order to study the charge profile within a single layer. We find that the electric field gives rise to a molecular Stark which leads to a splitting of the energy levels.","PeriodicalId":196292,"journal":{"name":"Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials","volume":"406 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116526338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Use of Single‐Wall Carbon Nanotubes as Templates for Organic Molecules 单壁碳纳米管作为有机分子模板的应用
Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials Pub Date : 2002-10-02 DOI: 10.1063/1.1514194
T. Hedderman, L. O’Neill, S. Keogh, E. Gregan, B. M. Carthy, A. Dalton, G. Chambers, H. Byrne
{"title":"The Use of Single‐Wall Carbon Nanotubes as Templates for Organic Molecules","authors":"T. Hedderman, L. O’Neill, S. Keogh, E. Gregan, B. M. Carthy, A. Dalton, G. Chambers, H. Byrne","doi":"10.1063/1.1514194","DOIUrl":"https://doi.org/10.1063/1.1514194","url":null,"abstract":"Single wall carbon nanotubes are insoluble in most organic solvents such as toluene. Improvements in the solubility of the single wall carbon nanotubes are however seen as a result of specific interactions with oligomers such as terphenyl and anthracene. Suspensions formed in toluene with these oligomers and the single wall carbon nanotubes are seen to be stable over prolonged periods. Spectroscopic analysis clearly shows an interaction between the carbon nanotubes and the oligomers. It is proposed in this study that the use of these more simple molecular systems may help elucidate the nature and extent of the interaction in more complex composite based systems.","PeriodicalId":196292,"journal":{"name":"Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127208925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis and EPR Characterization of Exohedrally Perfluoroalkylated Paramagnetic Lanthanum Metallofullerenes: A Fluorous Phase Approach 外表面全氟烷基化顺磁性镧金属富勒烯的合成及EPR表征:氟相法
Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials Pub Date : 2002-10-02 DOI: 10.1063/1.1514063
N. Tagmatarchis, A. Taninaka, H. Shinohara, M. Prato
{"title":"Synthesis and EPR Characterization of Exohedrally Perfluoroalkylated Paramagnetic Lanthanum Metallofullerenes: A Fluorous Phase Approach","authors":"N. Tagmatarchis, A. Taninaka, H. Shinohara, M. Prato","doi":"10.1063/1.1514063","DOIUrl":"https://doi.org/10.1063/1.1514063","url":null,"abstract":"A strategy to chemically derivatize the outer sphere of endohedral metallofullerenes by using a modern organic technique that utilizes a fluorous synthesis‐partitioning approach has been developed. The newly synthesized materials were found to be paramagnetic species and were characterized by electron paramagnetic resonance spectroscopy (EPR), laser desorption time‐of‐flight spectrometry (LD‐TOF) and electronic absorption spectroscopy (UV‐VIS‐NIR). The systematic study of exohedrally derivatized endohedral metallofullerenes should ultimately provide technologically intriguing novel nano‐materials.","PeriodicalId":196292,"journal":{"name":"Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125708047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Electron spin resonance theory for carbon nanotubes 碳纳米管的电子自旋共振理论
Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials Pub Date : 2002-10-02 DOI: 10.1063/1.1514141
A. D. Martino, R. Egger
{"title":"Electron spin resonance theory for carbon nanotubes","authors":"A. D. Martino, R. Egger","doi":"10.1063/1.1514141","DOIUrl":"https://doi.org/10.1063/1.1514141","url":null,"abstract":"We report results of a theoretical investigation of the effect of spin‐orbit couplings on the electron spin resonance in carbon nanotubes [1]. Using a low energy field theory analysis we predict a double peak structure for single‐wall tubes, intimately connected to spin‐charge separation, while a single narrow asymmetric peak is expected for multi‐wall tubes.","PeriodicalId":196292,"journal":{"name":"Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials","volume":"1 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134052984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Production of Multiwalled Carbon Nanotubes Using the Aerosol Method 气溶胶法制备多壁碳纳米管
Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials Pub Date : 2002-10-02 DOI: 10.1063/1.1514096
M. Glerup, H. Kanzow, R. Almairac, P. Bernier
{"title":"Production of Multiwalled Carbon Nanotubes Using the Aerosol Method","authors":"M. Glerup, H. Kanzow, R. Almairac, P. Bernier","doi":"10.1063/1.1514096","DOIUrl":"https://doi.org/10.1063/1.1514096","url":null,"abstract":"A new synthesis method has been invented for the production of carbon nanotubes. We have called this method the aerosol method since the fundamental synthesis routine is to create aerosols of organic solvent and metal particles by atomising a solution of a metal salt in a solvent using pure hydrogen gas. This method enables us to easily control the size of the catalyst particles. Reactions have been carried out at 700°C and 1000°C and in both cases multi‐walled carbon nanotubes have been produced. The tubes are characterised using scanning and transmission electron microscopy, and X‐ray diffraction.","PeriodicalId":196292,"journal":{"name":"Structural and Electronic Properties of Molecular Nanostructures. XVI International Winterschool on Electronic Properties of Novel Materials","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128955769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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