共查询到20条相似文献,搜索用时 15 毫秒
1.
Michael Walter Andreas Gü gel Jochen Spickermann Pavel Belik Alexander Kraus Klaus Mü llen 《Fullerenes, Nanotubes and Carbon Nanostructures》1996,4(1):101-113
Diels-Alder reaction of 4-amino-o-quinodimethane (6) with [60]fullerene (1) affords the thermally stable and chemically reactive adduct 7(n). The nucleophilic amino group of 7(n) is well suited for the covalent attachment of different molecules to the [60]fullerene core by further chemical reactions. 相似文献
2.
A new, scalable, one-pot solution phase synthesis of the D2 h symmetric trans-1 bisanthracene adduct of [60]fullerene is described. The highly regioselective reaction utilizes commercially available 9,10-dihydroanthracene, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and [60]fullerene and exhibits an unusual temperature dependence. 相似文献
3.
Shoji Eguchi Masatomi Ohno Satoshi Kojima Naoya Koide Arihiro Yashiro Yuri Shirakawa 《Fullerenes, Nanotubes and Carbon Nanostructures》2013,21(3):303-327
Abstract Fullerene functionalization with heterocycles is reviewed, focusing attention on cycloaddition methodology and oxidative heterocyclization. 1 相似文献
4.
Shoji Eguchi Masatomi Ohno Satoshi Kojima Naoya Koide Arihiro Yashiro Yuri Shirakawa Hiroshi Ishida 《Fullerenes, Nanotubes and Carbon Nanostructures》1996,4(3):303-327
Fullerene functionalization with heterocycles is reviewed, focusing attention on cycloaddition methodology and oxidative heterocyclization.1 相似文献
5.
Josef Maynollo Bernhard Kräutler 《Fullerenes, Nanotubes and Carbon Nanostructures》2013,21(2):213-226
Abstract Diels-Alder reactions allow the regioselective preparation of various derivatives of the [60]fullerene (1) with exohedral functionalization. A symmetric sixfold [2+4]-cycloaddition of 1,3-dienes to 1 opens direct synthetic access to hydrocarbons with a novel cyclophane structure. 相似文献
6.
Lixin Xiao Koichi Kitazawa Kazuhiko Saigo 《Fullerenes, Nanotubes and Carbon Nanostructures》2000,8(6):531-543
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 (ninh) 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. 相似文献
7.
Lixin Xiao Koichi Kitazawa Kazuhiko Saigo 《Fullerenes, Nanotubes and Carbon Nanostructures》2013,21(6):531-543
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. 相似文献
8.
Diels-Alder reactions allow the regioselective preparation of various derivatives of the [60]fullerene (1) with exohedral functionalization. A symmetric sixfold [2+4]-cycloaddition of 1,3-dienes to 1 opens direct synthetic access to hydrocarbons with a novel cyclophane structure. 相似文献
9.
《Fullerenes, Nanotubes and Carbon Nanostructures》2013,21(1-2):221-227
Abstract 61‐(Dimethoxyphosphoryl)‐61‐(methoxycarbonyl)methano[60]fullerene was produced by using the joint electrochemical reduction of fullerene C60 and (dimethoxyphosphoryl)methoxycarbonyldibromomethane. A few steps of reduction were detected for phosphorylated methano[60]fullerenes. When two electrons per molecule are transferred, the methano fragment is rapidly eliminated (retro‐Bingel reaction). This process involves the step‐by‐step cleavage of two C–C bonds of exo‐carbon with the fullerene shell in combination with the stepwise transfer of other two electrons and a proton to form finally the carbanion of the methano fragment and fullerene dianion. 相似文献
10.
Kou-Fu Liou Tsung-Yu Hsiao Chien-Hong Cheng 《Fullerenes, Nanotubes and Carbon Nanostructures》2013,21(2):351-359
Abstract Treatment of [60]fullerene with ethyl trans, trans-hexa-2,4-dienoate (1) and methyl trans, trans-octa-2,4-dienoate (2) at 70 ~ 100 °C afforded products 3 and 4, respectively, which are resulted from Diels-Alder addition of the dienoates to a 6/6 ring junction of [60]fullerene. 相似文献
11.
Kou-Fu Liou Tsung-Yu Hsiao Chien-Hong Cheng 《Fullerenes, Nanotubes and Carbon Nanostructures》1998,6(2):351-359
Treatment of [60]fullerene with ethyl trans, trans-hexa-2,4-dienoate (1) and methyl trans, trans-octa-2,4-dienoate (2) at 70 ∼ 100 °C afforded products 3 and 4, respectively, which are resulted from Diels-Alder addition of the dienoates to a 6/6 ring junction of [60]fullerene. 相似文献
12.
《Fullerenes, Nanotubes and Carbon Nanostructures》2013,21(1-2):139-145
Abstract Gas phase reactions of [60]fullerene with hydrogen atoms and/or methyl radicals have been performed by hot filament chemical vapor modification (CVM) to produce hydrogenated and/or methylated [60]fullerene. The CVM process parameters such as the time of reaction, pressure, and percentage of methane diluted in hydrogen have been varied so as to obtain the addended fullerene reaction products. Mass spectrometry and 1H NMR techniques were used to characterize the reaction products obtained. 相似文献
13.
Synthesis and Characterisation of Some New Ferrocenyl- and Ferrocenylalkynyl-[60]Fullerene Compounds
David J. Cardin Trevor Gibson Jason A. Peel 《Fullerenes, Nanotubes and Carbon Nanostructures》1997,5(4):681-694
We report the synthesis and characterisation of a series of ferrocenylfullerene compounds, and some new ferrocene derivatives required as intermediates. The new fullerene species are Fc-[60]fullerene, (8); Fc-C=C-[60]fullerene, (10); Fc-C=C-C=C-[60]fullerene, (12); and (η-C5H4SiBu3)Fe(η-C5H4)-[60]fullerene, (14). 相似文献
14.
Tatiana Klimova Elena Klimova Rosa A. V zquez Nava M. Gutierrez Marcos Martí nez 《Fullerenes, Nanotubes and Carbon Nanostructures》2003,11(3):269-281
We present a new use of fullerene C60 as a template for the synthesis of cyclic resorcinarenes, The cyclocondensation of 2-methyl-resorcinol with benzaldehyde and hexanal in THF, catalyzed by AlCl3, in the presence of 1%, 5%, and 10% fullerene C60, produces calix[4], [5], and [6] resorcinarenes, with the pentamer and hexamer as the major products. The resorcinarenes were characterized by 1H, 13C NMR, FTIR, FAB+ mass spectrometry, and elemental analysis. 相似文献
15.
《Fullerenes, Nanotubes and Carbon Nanostructures》2013,21(3):269-281
Abstract We present a new use of fullerene C60 as a template for the synthesis of cyclic resorcinarenes, The cyclocondensation of 2‐methyl‐resorcinol with benzaldehyde and hexanal in THF, catalyzed by AlCl3, in the presence of 1%, 5%, and 10% fullerene C60, produces calix[4], [5], and [6] resorcinarenes, with the pentamer and hexamer as the major products. The resorcinarenes were characterized by 1H, 13C NMR, FTIR, FAB+ mass spectrometry, and elemental analysis. 相似文献
16.
Nai-Xing Wang Jun-Ping Zhang Jia Zhao Wu-Wei Wang Shi Tang Gui-Xia Wang 《Fullerenes, Nanotubes and Carbon Nanostructures》2006,14(1):101-110
Two new [60]fullerene pyrrolidine derivatives 2 and 3 were synthesized and characterized by 1H NMR, 13C NMR and MS. Their photophysical processes have been investigated by using laser flash photolysis. The experiments show quenching of oligomer singlet excited state and the evidence of the fullerene singlet excited emission. And the intramolecular of electron transfer and also energy transfer of 2 and 3 occurred and the triplet excited state of fullerene moiety in 2 and 3 have different lifetime due to their different structures. A photovoltaic device using compound 2 as the only photoactive material has also been investigated which showed the energy conversion efficiency is 0.011%. 相似文献
17.
Glenn A. Burley Paul A. Keller Stephen G. Pyne 《Fullerenes, Nanotubes and Carbon Nanostructures》1999,7(6):973-1001
This paper is a review of the literature concerning the preparation of [60]fullerene amino acid and peptide derivatives. The structure and applications of these derivatives to the biological and Material sciences is also presented. 相似文献
18.
Glenn A. Burley Paul A. Keller Stephen G. Pyne 《Fullerenes, Nanotubes and Carbon Nanostructures》2013,21(6):973-1001
Abstract This paper is a review of the literature concerning the preparation of [60]fullerene amino acid and peptide derivatives. The structure and applications of these derivatives to the biological and Material sciences is also presented. 相似文献
19.
Shoji Eguchi 《Fullerenes, Nanotubes and Carbon Nanostructures》1997,5(5):977-987
Recent progress of synthesis of C60 derivatives functionalized with hetero-cycles is reviewed, focusing attention on [4+2]- and [3+2] cycloaddition methodologies and oxidative heterocyclization. 相似文献
20.
Novel supramolecular nanocapsules consisting of [60]fullerene and the macrocycle cucurbit[7]uril via self-assembly are reported. The nanocapsules, which were synthesized in a two-phase reaction at room temperature, were obtained in good yields. The stoichiometry of the product was found to be 1:2. 相似文献