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Photoinduced Electron Transfer to Fulleropyrrolidinium Salts Studied by EPR 光致Fulleropyrrolidinium盐的电子转移研究
Fullerene Science and Technology Pub Date : 2000-05-01 DOI: 10.1080/10641220009351410
V. Brezová, M. Gembicka, A. Staško
{"title":"Photoinduced Electron Transfer to Fulleropyrrolidinium Salts Studied by EPR","authors":"V. Brezová, M. Gembicka, A. Staško","doi":"10.1080/10641220009351410","DOIUrl":"https://doi.org/10.1080/10641220009351410","url":null,"abstract":"Abstract The photoinduced formation of fullerene anion radicals from mono- and bis-N-methylfulleropyrrolidinium salts in the presence of TiO2 or triethylamine as electron donating substrates was investigated using in situ EPR spectroscopy in various solvent mixtures. The photoreduction yield and stability of anion radicals generated are affected by the solvent properties, such as relative permittivity and hydrogen bond donation ability.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"53 1","pages":"225 - 248"},"PeriodicalIF":0.0,"publicationDate":"2000-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77214828","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: 4
Ab Initio Quantum Chemical Methods for Investigations of Fullerene C60, CS2 and Tetrathiafulvalene Molecules and Their Complexes 从头算量子化学方法研究富勒烯C60、CS2和四硫代烯分子及其配合物
Fullerene Science and Technology Pub Date : 2000-05-01 DOI: 10.1080/10641220009351407
J. Tamulienė, A. Tamulis, M. L. Balevicius, A. Graja
{"title":"Ab Initio Quantum Chemical Methods for Investigations of Fullerene C60, CS2 and Tetrathiafulvalene Molecules and Their Complexes","authors":"J. Tamulienė, A. Tamulis, M. L. Balevicius, A. Graja","doi":"10.1080/10641220009351407","DOIUrl":"https://doi.org/10.1080/10641220009351407","url":null,"abstract":"Abstract Geometry and energy of formation of single molecules: fullerene C60, CS2 and tetrathiofulvalene (TTF) and their complexes: C60 +CS2 and C60 +TTF were obtained using Hartree-Fock (HF) and Density Functional Theory methods in various basis sets. Weak chemical interactions were estimated enough well using HF/6-31G for a comparison of various geometrical conformations of these complexes. Energy of formation evaluation in charge-transfer complex C60 +TTF is performing additionally calculating complex with far-separated molecules.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"46 1","pages":"165 - 178"},"PeriodicalIF":0.0,"publicationDate":"2000-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76931340","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
Synthesis of Various Water-Soluble G60 Derivatives and Their Superoxide-Quenching Activity 各种水溶性G60衍生物的合成及其超氧猝灭活性
Fullerene Science and Technology Pub Date : 2000-05-01 DOI: 10.1080/10641220009351404
K. Okuda, T. Hirota, M. Hirobe, T. Nagano, M. Mochizuki, T. Mashino
{"title":"Synthesis of Various Water-Soluble G60 Derivatives and Their Superoxide-Quenching Activity","authors":"K. Okuda, T. Hirota, M. Hirobe, T. Nagano, M. Mochizuki, T. Mashino","doi":"10.1080/10641220009351404","DOIUrl":"https://doi.org/10.1080/10641220009351404","url":null,"abstract":"Abstract In order to examine the utility of fullerene as a medicinal application, we evaluated the reaction between fullerene derivatives and active oxygen species in vitro. This paper describes the synthesis of various water-soluble C60 derivatives (cationic and anionic) and evaluation of their superoxide (O2 −) quenching activity. Cationic C60 derivatives showed fairly high efficiency.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"47 1","pages":"127 - 142"},"PeriodicalIF":0.0,"publicationDate":"2000-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72696673","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: 10
Large “Pillow” Fullerenes as Graphite without Dangling Bonds 无悬空键的大“枕头”富勒烯石墨
Fullerene Science and Technology Pub Date : 2000-05-01 DOI: 10.1080/10641220009351411
A. T. Balaban, D. Klein, W. Seitz
{"title":"Large “Pillow” Fullerenes as Graphite without Dangling Bonds","authors":"A. T. Balaban, D. Klein, W. Seitz","doi":"10.1080/10641220009351411","DOIUrl":"https://doi.org/10.1080/10641220009351411","url":null,"abstract":"Abstract The possibility is considered of a special class of fullerenes which are not spheres but disks, similar in shape to healthy red-blood cells (or erythrocytes). Such a fullerene would consist of two large, nearly parallel, hexagonal arrays of benzenoid rings, each array connected by 12 pentagons (and typically some supplementary benzenoid rings). Different families of such fullerenes are presented, sometimes via more than one construction. They can be considered to approximate graphite without dangling bonds, especially if the central parts of the hexagonal arrays consisting only of hexagonal rings flatten to yield intramolecular Van der Waals attractive interactions between the two parallel faces of the erythrocyte-like pillow-shaped fullerene.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"52 1","pages":"249 - 265"},"PeriodicalIF":0.0,"publicationDate":"2000-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83967395","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: 4
Production of Fullerenes from Plant Materials and used Carbon Materials by Means of a Chip-Injection-Type J×B Arc Reactor 用芯片注入式J×B电弧反应器从植物材料和废碳材料中生产富勒烯
Fullerene Science and Technology Pub Date : 2000-05-01 DOI: 10.1080/10641220009351408
T. Mieno
{"title":"Production of Fullerenes from Plant Materials and used Carbon Materials by Means of a Chip-Injection-Type J×B Arc Reactor","authors":"T. Mieno","doi":"10.1080/10641220009351408","DOIUrl":"https://doi.org/10.1080/10641220009351408","url":null,"abstract":"Abstract By using a chip-injection-type J×B arc reactor, carbon material chips of, for example, charcoal, activated carbon, sumi (Chinese ink stick), synthetic rubber and carbon black are well arc-sublimated in He gas and fullerenes are successfully produced from these materials. From the viewpoints of effective use of plant resources, recycling of used carbon materials and environmental low-emission technology, the utilization of these materials to produce fullerenes has potential as an environment-friendly technology.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"3 1","pages":"179 - 186"},"PeriodicalIF":0.0,"publicationDate":"2000-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88423919","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: 3
Formation of NbSe2 Nanotubes by Electron Irradiation 电子辐照制备NbSe2纳米管
Fullerene Science and Technology Pub Date : 2000-05-01 DOI: 10.1080/10641220009351405
D. Galván, Jun-Ho Kim, M. Maple, M. Avalos-Borja, E. Adem
{"title":"Formation of NbSe2 Nanotubes by Electron Irradiation","authors":"D. Galván, Jun-Ho Kim, M. Maple, M. Avalos-Borja, E. Adem","doi":"10.1080/10641220009351405","DOIUrl":"https://doi.org/10.1080/10641220009351405","url":null,"abstract":"Abstract In this work, we report the production of NbSe2, (niobium diselenide) nanotubes by high doses of electron irradiation. The apparatus used for irradiation was a 2 MeV Van de Graaff accelerator, while the irradiation conditions were the following: voltage 1.3 MeV, current 5μA, dose rate 25 kGy/min, and total dosage 1000 kGy. Samples were analyzed with a high-resolution transmission electron microscope. The main characteristics observed were huge and very well defined nanotubes of several nm long and few nm wide, which are presumably hollow, although they are capped at one end. At this level of irradiation, we were able to find neither onion-like structure nor nanoparticles through out other areas, as it is usual in similar hexagonal structures of the dichalcogenide family.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"6 1","pages":"143 - 151"},"PeriodicalIF":0.0,"publicationDate":"2000-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86651675","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: 22
The Role of Fullerene-Like Structures in Carbon Black and Their Interaction with Dienic Rubber 类富勒烯结构在炭黑中的作用及其与双烯橡胶的相互作用
Fullerene Science and Technology Pub Date : 2000-01-01 DOI: 10.1080/10641220009351401
F. Cataldo
{"title":"The Role of Fullerene-Like Structures in Carbon Black and Their Interaction with Dienic Rubber","authors":"F. Cataldo","doi":"10.1080/10641220009351401","DOIUrl":"https://doi.org/10.1080/10641220009351401","url":null,"abstract":"Abstract The identification of fullerene-like sites on carbon black surface and in particular the pentagonal or corannulene-type sites, has permitted us to explain the chemical interaction between filler and polymer (diene rubber) occurring during mixing in terms of free radical and Diels-Alder addition of polymer chains on the fullerene-like sites of carbon black. The free radicals and diene sites are formed on rubber chains during mixing by the mechanochemical degradation, which is caused by shear stresses. We have also noticed the curious analogy between the turbostratic morphology of carbon black particles and the onion-like graphitic particles.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"14 1","pages":"105 - 112"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73684651","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: 33
Hydroxyl Radical Scavenging and Producing Activities of Water-Soluble Malonic Acid C60 水溶性丙二酸C60清除羟基自由基及产生活性研究
Fullerene Science and Technology Pub Date : 2000-01-01 DOI: 10.1080/10641220009351402
F. Cheng, Xinlin Yang, He-sun Zhu
{"title":"Hydroxyl Radical Scavenging and Producing Activities of Water-Soluble Malonic Acid C60","authors":"F. Cheng, Xinlin Yang, He-sun Zhu","doi":"10.1080/10641220009351402","DOIUrl":"https://doi.org/10.1080/10641220009351402","url":null,"abstract":"Abstract The effects of several water-soluble malonic acid derivatives of C60 with different addition number (M1∼M4) on hydroxyl radical were studied by ESR method. It was shown that the OH signal produced by the Fenton system could be remarkably reduced by M1 and M2, but could not by M3 and M4. The action of M1 and M2 was dose-dependent, and M1 was found to be more effective than M2. In addition, under irradiation and in the presence of oxygen, M2 could produce hydroxyl radicals. These data indicate that the quenching activity of the malonic acid derivative of C60 was closely related to the integrity of conjugated double bonds, and some C60 derivatives with specific structures might act as the eliminator or producer of hydroxyl radicals under different conditions.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"30 1","pages":"113 - 124"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81375769","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
Dynamics of the Metal Ion in M@C82 (M=La, Y) Metallofullerenes Studied by Temperature Effects in Electron Spin Resonance Spectra 电子自旋共振光谱温度效应研究M@C82 (M=La, Y)金属富勒烯中金属离子动力学
Fullerene Science and Technology Pub Date : 2000-01-01 DOI: 10.1080/10641220009351391
S. Solodovnikov, B. Tumanskii, V. V. Bashilov, V. I. Sokolov, S. Lebedkin, W. Krätschmer
{"title":"Dynamics of the Metal Ion in M@C82 (M=La, Y) Metallofullerenes Studied by Temperature Effects in Electron Spin Resonance Spectra","authors":"S. Solodovnikov, B. Tumanskii, V. V. Bashilov, V. I. Sokolov, S. Lebedkin, W. Krätschmer","doi":"10.1080/10641220009351391","DOIUrl":"https://doi.org/10.1080/10641220009351391","url":null,"abstract":"Abstract ESR spectra of M@C82 (M=La, Y) metallofullerene solutions show the monotonic decrease of the metal ion hyperfine coupling constant between −70 and +260°C and changes in the lineshape of Y@C82 signals above 80°C, which were attributed to anharmonic metal-to-cage vibrations and to the motion of Y between different chemisorption sites in a C82 cage, respectively.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"15 1","pages":"1 - 7"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87972324","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
Synthesis of Various Water-Soluble C60 Derivatives and Their Superoxide-Quenching Activity 各种水溶性C60衍生物的合成及其超氧猝灭活性
Fullerene Science and Technology Pub Date : 2000-01-01 DOI: 10.1080/10641220009351400
K. Okuda, T. Hirota, M. Hirobe, T. Nagano, M. Mochizuki, T. Mashino
{"title":"Synthesis of Various Water-Soluble C60 Derivatives and Their Superoxide-Quenching Activity","authors":"K. Okuda, T. Hirota, M. Hirobe, T. Nagano, M. Mochizuki, T. Mashino","doi":"10.1080/10641220009351400","DOIUrl":"https://doi.org/10.1080/10641220009351400","url":null,"abstract":"Abstract In order to examine the utility of fullerene as a medicinal application, we evaluated the reaction between fullerene derivatives and active oxygen species in vitro. This paper describes the synthesis of various water-soluble C60 derivatives (cationic and anionic) and evaluation of their superoxide (O2 −) quenching activity. Cationic C60 derivatives showed fairly high efficiency.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"20 1","pages":"104 - 89"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88812968","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: 36
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