Chiral colloidal clusters

D. Zerrouki, J. Baudry, D. Pine, P. Chaikin, J. Bibette

Research output: Contribution to journalArticle

Abstract

Chirality is an important element of biology, chemistry and physics. Once symmetry is broken and a handedness is established, biochemical pathways are set. In DNA, the double helix arises from the existence of two competing length scales, one set by the distance between monomers in the sugar backbone, and the other set by the stacking of the base pairs. Here we use a colloidal system to explore a simple forcing route to chiral structures. To do so we have designed magnetic colloids that, depending on both their shape and induced magnetization, self-assemble with controlled helicity. We model the two length scales with asymmetric colloidal dumbbells linked by a magnetic belt at their waist. In the presence of a magnetic field the belts assemble into a chain and the steric constraints imposed by the asymmetric spheres force the chain to coil. We show that if the size ratio between the spheres is large enough, a single helicity is adopted, right or left. The realization of chiral colloidal clusters opens up a new link between colloidal science and chemistry. These colloidal clusters may also find use as mesopolymers, as optical and light-activated structures, and as models for enantiomeric separation.

Original languageEnglish (US)
Pages (from-to)380-382
Number of pages3
JournalNature
Volume455
Issue number7211
DOIs
StatePublished - Sep 18 2008

Fingerprint

Functional Laterality
Physics
Colloids
Magnetic Fields
Base Pairing
Light
DNA

ASJC Scopus subject areas

  • General

Cite this

Zerrouki, D., Baudry, J., Pine, D., Chaikin, P., & Bibette, J. (2008). Chiral colloidal clusters. Nature, 455(7211), 380-382. https://doi.org/10.1038/nature07237

Chiral colloidal clusters. / Zerrouki, D.; Baudry, J.; Pine, D.; Chaikin, P.; Bibette, J.

In: Nature, Vol. 455, No. 7211, 18.09.2008, p. 380-382.

Research output: Contribution to journalArticle

Zerrouki, D, Baudry, J, Pine, D, Chaikin, P & Bibette, J 2008, 'Chiral colloidal clusters', Nature, vol. 455, no. 7211, pp. 380-382. https://doi.org/10.1038/nature07237
Zerrouki D, Baudry J, Pine D, Chaikin P, Bibette J. Chiral colloidal clusters. Nature. 2008 Sep 18;455(7211):380-382. https://doi.org/10.1038/nature07237
Zerrouki, D. ; Baudry, J. ; Pine, D. ; Chaikin, P. ; Bibette, J. / Chiral colloidal clusters. In: Nature. 2008 ; Vol. 455, No. 7211. pp. 380-382.
@article{1c2ff0d81ddf45338ddd404334c72ae3,
title = "Chiral colloidal clusters",
abstract = "Chirality is an important element of biology, chemistry and physics. Once symmetry is broken and a handedness is established, biochemical pathways are set. In DNA, the double helix arises from the existence of two competing length scales, one set by the distance between monomers in the sugar backbone, and the other set by the stacking of the base pairs. Here we use a colloidal system to explore a simple forcing route to chiral structures. To do so we have designed magnetic colloids that, depending on both their shape and induced magnetization, self-assemble with controlled helicity. We model the two length scales with asymmetric colloidal dumbbells linked by a magnetic belt at their waist. In the presence of a magnetic field the belts assemble into a chain and the steric constraints imposed by the asymmetric spheres force the chain to coil. We show that if the size ratio between the spheres is large enough, a single helicity is adopted, right or left. The realization of chiral colloidal clusters opens up a new link between colloidal science and chemistry. These colloidal clusters may also find use as mesopolymers, as optical and light-activated structures, and as models for enantiomeric separation.",
author = "D. Zerrouki and J. Baudry and D. Pine and P. Chaikin and J. Bibette",
year = "2008",
month = "9",
day = "18",
doi = "10.1038/nature07237",
language = "English (US)",
volume = "455",
pages = "380--382",
journal = "Nature Cell Biology",
issn = "1465-7392",
publisher = "Nature Publishing Group",
number = "7211",

}

TY - JOUR

T1 - Chiral colloidal clusters

AU - Zerrouki, D.

AU - Baudry, J.

AU - Pine, D.

AU - Chaikin, P.

AU - Bibette, J.

PY - 2008/9/18

Y1 - 2008/9/18

N2 - Chirality is an important element of biology, chemistry and physics. Once symmetry is broken and a handedness is established, biochemical pathways are set. In DNA, the double helix arises from the existence of two competing length scales, one set by the distance between monomers in the sugar backbone, and the other set by the stacking of the base pairs. Here we use a colloidal system to explore a simple forcing route to chiral structures. To do so we have designed magnetic colloids that, depending on both their shape and induced magnetization, self-assemble with controlled helicity. We model the two length scales with asymmetric colloidal dumbbells linked by a magnetic belt at their waist. In the presence of a magnetic field the belts assemble into a chain and the steric constraints imposed by the asymmetric spheres force the chain to coil. We show that if the size ratio between the spheres is large enough, a single helicity is adopted, right or left. The realization of chiral colloidal clusters opens up a new link between colloidal science and chemistry. These colloidal clusters may also find use as mesopolymers, as optical and light-activated structures, and as models for enantiomeric separation.

AB - Chirality is an important element of biology, chemistry and physics. Once symmetry is broken and a handedness is established, biochemical pathways are set. In DNA, the double helix arises from the existence of two competing length scales, one set by the distance between monomers in the sugar backbone, and the other set by the stacking of the base pairs. Here we use a colloidal system to explore a simple forcing route to chiral structures. To do so we have designed magnetic colloids that, depending on both their shape and induced magnetization, self-assemble with controlled helicity. We model the two length scales with asymmetric colloidal dumbbells linked by a magnetic belt at their waist. In the presence of a magnetic field the belts assemble into a chain and the steric constraints imposed by the asymmetric spheres force the chain to coil. We show that if the size ratio between the spheres is large enough, a single helicity is adopted, right or left. The realization of chiral colloidal clusters opens up a new link between colloidal science and chemistry. These colloidal clusters may also find use as mesopolymers, as optical and light-activated structures, and as models for enantiomeric separation.

UR - http://www.scopus.com/inward/record.url?scp=52149096738&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=52149096738&partnerID=8YFLogxK

U2 - 10.1038/nature07237

DO - 10.1038/nature07237

M3 - Article

C2 - 18800136

AN - SCOPUS:52149096738

VL - 455

SP - 380

EP - 382

JO - Nature Cell Biology

JF - Nature Cell Biology

SN - 1465-7392

IS - 7211

ER -