Functional polypedes—chiral nematic fullerenes

Campidelli, Stéphane; Eng, Carine; Sáez, Isabel M.; Goodby, John W.; Deschenaux, Robert

doi:10.1039/b303798n

Cited by 53 publications

(28 citation statements)

References 12 publications

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“…Campidelli et al 76 obtained a three-dimensional structure of a compound in which chiral malonate groups were attached to C 60 ( Fig. 11 compound 19).…”

Section: Chiral Fullerenesmentioning

confidence: 99%

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Chiral nanotechnology

Zhang¹,

Albelda²,

Liu³

et al. 2005

Chirality

173

121

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A review of chiral, nanoscale science and technology is presented, with the subject divided into two topics. The first discusses nanotechnology in the service of asymmetric synthesis, chiral separations, and analysis. The second topic concerns broader research in the nanotechnology realm, where molecular chirality plays a role in the properties of materials, including molecular devices, chiral supramolecules, chiral nanotubes, chiral fullerenes, and DNA nanotechnology.

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“…Campidelli et al 76 obtained a three-dimensional structure of a compound in which chiral malonate groups were attached to C 60 ( Fig. 11 compound 19).…”

Section: Chiral Fullerenesmentioning

confidence: 99%

“…Compound 19 is a chiral liquid crystalline C 60 derivative. 76 sidewall functionalization of carbon nanotubes. Holzinger et al 86 reported a series of nanotube derivatives obtained by [2+1] cycloaddition of nitrenes, addition of nucleophilic carbenes, or addition of a radical.…”

Section: Chiral Carbon Nanotubesmentioning

confidence: 99%

Chiral nanotechnology

Zhang¹,

Albelda²,

Liu³

et al. 2005

Chirality

173

121

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“…23 The value of the pitch of the helix for 1 is 5 AE 0.5 mm and does not depend on the temperature. This value indicates that C 60 fits within the helical structure formed by the mesogens themselves without causing any significant perturbation of the pitch itself.…”

Section: Self-organization Of Fullerodendrimers Chiral Nematic Phasementioning

confidence: 99%

Liquid-crystalline fullerodendrimers

2007

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Addition of liquid-crystalline dendrimers onto [60]fullerene led to thermotropic liquid crystals which displayed various types of mesophases, including chiral nematic, smectic B, smectic A and columnar phases. This approach represents an interesting way for the design of self-organized structures based on [60]fullerene, and opens the way to optoelectronic applications for this carbon allotrope, such as for the development of photovoltaic devices and molecular switches.

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“…2, 4, 6, 7, and 8) under standard reaction conditions. The syntheses of the precursors 9 [13], 10 [13], and 13 [14] had already been published, and the precursors 11 [15a] and 12 [15a] have been prepared as described in the literature.…”

mentioning

confidence: 99%

Liquid‐Crystalline Thiol‐ and Disulfide‐Based Dendrimers for the Functionalization of Gold Nanoparticles. Preliminary Communication

Frein

Boudon

Vonlanthen

et al. 2008

Helvetica Chimica Acta

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Liquid-crystalline dendrons carrying either a thiol or disulfide function which display nematic, smectic A, columnar, or chiral nematic phases have been synthesized. Their mesomorphic properties are in agreement with the nature of the mesogenic units and structure of the dendrons. The first-generation poly(aryl ester) dendron containing two cyanobiphenyl mesogenic units was used to functionalize gold nanoparticles. For full coverage, a smectic-like supramolecular organization on the nanometer scale is observed, when the gold nanoparticles are spread onto carbon-coated copper grids. This result indicates that the dendritic ligands reported here act as self-organization promoters.Introduction. -Rational design of novel supramolecular materials for applications in optics, electronics, catalysis, and biomedical sciences is still a challenge [1], current interest with this aim being focused on the synthesis of thermotropic liquid-crystalline gold nanoparticles [2 -5]. Decorated gold nanoparticles are one of the most promising candidates for self-organization leading to bulk metamaterials, i.e., materials with nonconventional electromagnetic properties. It has already been shown that regular arrangements of metallic particles on different length scales can lead to negative magnetic permeability [6]. This opens the pathway to metamaterials in the visible light region, provided that the following conditions are fulfilled: the distance and organization of the particles have to be controlled, and there should be a possibility to compensate optical absorption by incorporation of active agents to allow energy transfer [7]. The first condition is fulfilled by the self-organization within the liquidcrystal phase itself, while the second one can be fulfilled by adding fluorescence dyes into the liquid-crystal materials.To generate mesomorphism, gold nanoparticles were functionalized with liquidcrystalline thiol derivatives [2 -4] via a ligand-exchange reaction from dodecane-1-thiol-stabilized gold nanoparticles [8]. Only in one case, the mesophase displayed by the materials could be identified [4]: an enantiotropic nematic phase was obtained for gold nanoparticles partly decorated with laterally-branched mesogens; the latter

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Functional polypedes—chiral nematic fullerenes

Cited by 53 publications

References 12 publications

Chiral nanotechnology

Chiral nanotechnology

Liquid-crystalline fullerodendrimers

Liquid‐Crystalline Thiol‐ and Disulfide‐Based Dendrimers for the Functionalization of Gold Nanoparticles. Preliminary Communication

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