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Synthesis of Lanthanofullerenes by Laser Ablation Using Pulsed and CW-Nd:YAG Lasers 脉冲和CW-Nd:YAG激光烧蚀合成镧系富勒烯
Fullerene Science and Technology Pub Date : 2000-11-01 DOI: 10.1080/10641220009351429
T. Oyama, T. Ishii, K. Takeuchi
{"title":"Synthesis of Lanthanofullerenes by Laser Ablation Using Pulsed and CW-Nd:YAG Lasers","authors":"T. Oyama, T. Ishii, K. Takeuchi","doi":"10.1080/10641220009351429","DOIUrl":"https://doi.org/10.1080/10641220009351429","url":null,"abstract":"Abstract Endohedral lanthanum fullerenes, La@C60, La@C82 and La2C80, were synthesized by ablation of graphite and La2O3 in flowing Ar buffer gas with a 1064 nm beam from a pulsed-Nd: YAG laser in which the graphite was heated by the CW-Nd:YAG laser up to 2500 °C. The La-fullerenes were also prepared by laser ablation of a lanthanum-graphite composite rod. The extractant fullerenes from the carbon soot were analyzed by laser-desorption time of flight mass spectrometry (LD-TOF MS). The relative yield of La@C82, increased with increasing temperature of the rod in the range of 700-2300 °C.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"9 1","pages":"491 - 499"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79938079","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
Platinum Fulleride Reduction by Molecular Deuterium or 9, 10-dihydroanthracene 用分子氘或9,10 -二氢蒽还原铂富勒化物
Fullerene Science and Technology Pub Date : 2000-11-01 DOI: 10.1080/10641220009351431
N. Goldshleger, B. Tarasov, Y. Shul’ga, O. S. Roschupkina, A. A. Perov, A. Okotrub, A. P. Moravsky
{"title":"Platinum Fulleride Reduction by Molecular Deuterium or 9, 10-dihydroanthracene","authors":"N. Goldshleger, B. Tarasov, Y. Shul’ga, O. S. Roschupkina, A. A. Perov, A. Okotrub, A. P. Moravsky","doi":"10.1080/10641220009351431","DOIUrl":"https://doi.org/10.1080/10641220009351431","url":null,"abstract":"Abstract C60Pt reacts with D2 (1-2 MPa D2 pressure and 373-723 K) to form C60Dx (x = 2-26) and Pt clusters. C60 in platinum fulleride is also reduced by dihydroanthracene to hydrofullerenes. The value of EbPt4f7/2 (72.4 eV) obtained for platinum in the starting C60Pt suggests partial charge transfer from the Pt atom to C60 in C60Pt.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"38 1","pages":"519 - 529"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76464190","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
Effects of γ Radiation on C60 Fullerene in CCI4 Solution γ辐射对CCI4溶液中C60富勒烯的影响
Fullerene Science and Technology Pub Date : 2000-11-01 DOI: 10.1080/10641220009351438
F. Cataldo, P. Ragni, M. Pentimalli
{"title":"Effects of γ Radiation on C60 Fullerene in CCI4 Solution","authors":"F. Cataldo, P. Ragni, M. Pentimalli","doi":"10.1080/10641220009351438","DOIUrl":"https://doi.org/10.1080/10641220009351438","url":null,"abstract":"Abstract By treating a CCI4 solution of C60 in a sealed ampoule under argon with γ radiation generated by a 60Co source, chlorinated and trichloromethylated C60 oligomers (dimers, trimers) are produced. A total radiation dose of 122 kGy was used.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"36 11 1","pages":"623 - 631"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90658540","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
Molecular Complex of [60]Fullerene with 2-(4-thione-l,3-dithiolan-5-yliden)-4,5-dimethyl-1,3-diselenol [C60·2(DTDS)]: Synthesis, Crystal Structure and Properties [60]富勒烯与2-(4-硫酮-1,3-二硫胺-5-基登)-4,5-二甲基-1,3-二烯醇的分子配合物[C60·2(DTDS)]的合成、晶体结构和性质
Fullerene Science and Technology Pub Date : 2000-11-01 DOI: 10.1080/10641220009351434
N. Spitsina, S. V. Konovalikhin, A. Lobach, E. Golubev, M. Kaplunov, O. A. D’yachenko
{"title":"Molecular Complex of [60]Fullerene with 2-(4-thione-l,3-dithiolan-5-yliden)-4,5-dimethyl-1,3-diselenol [C60·2(DTDS)]: Synthesis, Crystal Structure and Properties","authors":"N. Spitsina, S. V. Konovalikhin, A. Lobach, E. Golubev, M. Kaplunov, O. A. D’yachenko","doi":"10.1080/10641220009351434","DOIUrl":"https://doi.org/10.1080/10641220009351434","url":null,"abstract":"Abstract New molecular complexes of [60]fullerene with 2-(4-thione-l,3-dithiolan-5-yliden)-4,5-dimethyl-l,3-diselenol [C60·2(DTDS)] have been synthesized, crystal structure, IR spectral and electrochemical properties have been studied. Partial charge transfer has been found. An unusual shortening of the endocyclic S-C(sp2) bond in the DTDS molecule has been found to be stipulated by conformational vibrations of the >CH2 group. A comparative analysis of the X-ray data for the [C60·2(DTDS)] crystals and the quantum chemical calculations (SCF MO, 6-31G* basis) for the DTDS molecules and its radical ions showed charge transfer not to be the cause for the shortening of the exocyclic C=S bonds.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"13 1","pages":"561 - 576"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74567910","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
Surface Ionization Mass Spectrometric Studies of the Li/C60 System Li/C60体系的表面电离质谱研究
Fullerene Science and Technology Pub Date : 2000-11-01 DOI: 10.1080/10641220009351426
A. Đerić, M. Veljković, O. M. Nešković, M. Miletić, K. Zmbov
{"title":"Surface Ionization Mass Spectrometric Studies of the Li/C60 System","authors":"A. Đerić, M. Veljković, O. M. Nešković, M. Miletić, K. Zmbov","doi":"10.1080/10641220009351426","DOIUrl":"https://doi.org/10.1080/10641220009351426","url":null,"abstract":"Abstract We have studied the Li/C60 system by the surface ionization mass spectrometry. We have investigated a possibility of the Li@C60 formation via the collisions between Li+and C60 − ions in a plasma state, which was predicted by an ab initio molecular dynamics simulation. The LiC60 complex was unambiguously observed. Our results do not allow direct determination of the LiC60 structure but indicate that Li is inside the C60 cage. We have determined the ionization potential of Li@C60 complex (IP = 5.9 ± 0.1 eV), which agrees well with the calculated value of the IP of Li@C60.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"16 1","pages":"461 - 473"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88347089","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
Synthesis of High-Molecular-Weight [60]Fullerene Pearl-Necklace Polyamides Derived from Equatorial [60]fullerenobisacetic Acid 赤道式[60]富勒烯双乙酸合成高分子量[60]富勒烯珍珠项链聚酰胺
Fullerene Science and Technology Pub Date : 2000-11-01 DOI: 10.1080/10641220009351432
Lixin Xiao, K. Kitazawa, K. Saigo
{"title":"Synthesis of High-Molecular-Weight [60]Fullerene Pearl-Necklace Polyamides Derived from Equatorial [60]fullerenobisacetic Acid","authors":"Lixin Xiao, K. Kitazawa, K. Saigo","doi":"10.1080/10641220009351432","DOIUrl":"https://doi.org/10.1080/10641220009351432","url":null,"abstract":"Abstract A series of [60]fullerene pearl-necklace polyamides, consisting of equatorial-[60]fullerenobisacetic acid and various chromophoric aromatic diamines, were synthesized by a phosphorylation route using large amounts of triphenyl phosphite and pyridine as condensing reagents with stepwise addition of the condensing reagents. In the present polymers, [60]fullerene pearls and diamine linkers were attached to one another by cyclopropane connectors. The polyamides had weight-average molecular weights (Mw)of 4.5-5.0×104 g/mol and inherent viscosities (n inh) of 0.3-0.4 dL/g in N, N-dimethylacetamide (DMAc) at 30 °C. They had glass transition temperatures at 30-125 °C and decomposition temperatures at 300-310 °C. The UV-VIS spectra in DMAc exhibited broad absorption with λmax at 310-390 nm tailing to longer wavelengths.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"38 1","pages":"531 - 543"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78972204","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
All-Carbon [60]Fullerene Oligomers of Pearl-Necklace Type 珍珠项链型全碳[60]富勒烯低聚物
Fullerene Science and Technology Pub Date : 2000-11-01 DOI: 10.1080/10641220009351433
N. Dragoe, K. Nakahara, H. Shimotani, L. Xiao, S. Tanibayashi, T. Higuchi, K. Kitazawa
{"title":"All-Carbon [60]Fullerene Oligomers of Pearl-Necklace Type","authors":"N. Dragoe, K. Nakahara, H. Shimotani, L. Xiao, S. Tanibayashi, T. Higuchi, K. Kitazawa","doi":"10.1080/10641220009351433","DOIUrl":"https://doi.org/10.1080/10641220009351433","url":null,"abstract":"Abstract The formation of all-carbon [60]fullerene derivatives was observed in the course of the thermolysis of methano-fullerene derivatives. IR, UV-Vis, GPC, 13C-NMR, TG-MS, TOF-MS and STM data are consistent with the formation of all-carbon [60]fullerene oligomers without a direct connection between fullerene cages but through one or two carbon atoms as bridges. Molecular masses up to 8000 amu have been detected by mass spectroscopy.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"38 1","pages":"545 - 559"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77527282","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
On the Action of γ Radiation on Solid C60 and C70 Fullerenes: A Comparison with Graphite Irradiation γ辐射对固体C60和C70富勒烯的作用:与石墨辐射的比较
Fullerene Science and Technology Pub Date : 2000-11-01 DOI: 10.1080/10641220009351435
F. Cataldo
{"title":"On the Action of γ Radiation on Solid C60 and C70 Fullerenes: A Comparison with Graphite Irradiation","authors":"F. Cataldo","doi":"10.1080/10641220009351435","DOIUrl":"https://doi.org/10.1080/10641220009351435","url":null,"abstract":"Abstract C60 and C70 fullerene have been treated in sealed flasks under Ar with γ radiation using radiation dosages ranging from 10 to 1000 kGy. The treated samples studied by electronic and FT-IR spectroscopy have not shown any evidence about fullerenes decomposition or radiopolymerization. However, through Raman spectroscopy it was possible to observe that γ radiation induces C60 dimerization and trimerization. It has additionally been discovered that γ-treated C60 (oligomerized) can be easily photopolymerized in the solid state by post-irradiation with laser light at 514 nm while this phenomenon has not been observed by using laser light at 782 nm and considerably higher laser power. Previously to this study, C60 photopolymerization was known to occur only by using ultraviolet light. For comparison also graphite was irradiated with 1000 kGy of γ radiation. Irradiated graphite shows considerably changes in its Raman spectrum, showing the formation of glassy carbon domains, perhaps carbon onions. The ld bandshift to 1310 cm−1 could be interpreted in terms of formation of hexagonal diamond.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"100 1","pages":"577 - 593"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79301307","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: 35
Raman Spectra of Some Fullerene Polymers 一些富勒烯聚合物的拉曼光谱
Fullerene Science and Technology Pub Date : 2000-11-01 DOI: 10.1080/10641220009351439
F. Cataldo
{"title":"Raman Spectra of Some Fullerene Polymers","authors":"F. Cataldo","doi":"10.1080/10641220009351439","DOIUrl":"https://doi.org/10.1080/10641220009351439","url":null,"abstract":"Abstract A brief comparison between the Raman spectra of C60 photopolymer with the C60 sonopolymer is presented. The spectrum of C70 photoproduct is also discussed.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"15 1","pages":"633 - 637"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89634235","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: 2
C32: Computations of Low-Energy Cages with Four-Membered Rings C32:四元环低能笼的计算
Fullerene Science and Technology Pub Date : 2000-11-01 DOI: 10.1080/10641220009351436
Xiang Zhao, Z. Slanina, M. Ozawa, E. Ōsawa, Pradeep Deota, K. Tanabe
{"title":"C32: Computations of Low-Energy Cages with Four-Membered Rings","authors":"Xiang Zhao, Z. Slanina, M. Ozawa, E. Ōsawa, Pradeep Deota, K. Tanabe","doi":"10.1080/10641220009351436","DOIUrl":"https://doi.org/10.1080/10641220009351436","url":null,"abstract":"Abstract C32 cages built from four-, five-, six-, and seven-membered rings are computed. The computations are primarily performed with semiempirical quantum-chemical methods (AM1, PM3, SAM1), and altogether 199 cages are optimized. The energetics is further checked through ab initio HF SCF computations with the standard 3-21G basis set, and also by density functional theory at the B3LYP level in the standard 6-31G* basis set. All five levels of theory suggest a D4d cage (two four-membered rings, eight pentagons, eight hexagons) as the lowest-energy structure. Temperature effects are treated in the terms of partition functions so that the entropy contributions are considered accordingly. The thermodynamic treatment points out five cages significantly populated at high temperatures. At very high temperatures the structure lowest in energy is not the most abundant isomer. There are just six conventional fullerenes C32, built exclusively from pentagons and hexagons, however, only two of them show significant populations at high temperatures. The remaining three relatively stable cages contain at least one four-membered ring. No structure with a heptagon shows a non-negligible concentration at high temperatures. The study suggests that in the non-IPR region the quasi-fullerene cages with four-membered rings can in some cases be more important than the conventional fullerenes built from pentagons and hexagons only.","PeriodicalId":12470,"journal":{"name":"Fullerene Science and Technology","volume":"162 1","pages":"595 - 613"},"PeriodicalIF":0.0,"publicationDate":"2000-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80250435","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: 21
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