Liquid crystals of aqueous, giant graphene oxide flakes

Budhadipta Dan; Natnael Behabtu; Angel Martinez; Julian S. Evans; Dmitry V. Kosynkin; James M. Tour; Matteo Pasquali; Ivan I. Smalyukh

doi:10.1039/c1sm06418e

Liquid crystals of aqueous, giant graphene oxide flakes

Budhadipta Dan, Natnael Behabtu, Angel Martinez, Julian S. Evans, Dmitry V. Kosynkin, James M. Tour, Matteo Pasquali, Ivan I. Smalyukh

Physics

Research output: Contribution to journal › Article › peer-review

183 Scopus citations

Abstract

We report the observation of liquid crystals formed by giant graphene oxide flakes (aspect ratio above 10000) suspended in water. As their concentration increases, the flakes undergo transitions from an isotropic dispersion to a biphasic system and then to a discotic nematic liquid crystal. The gel-like liquid crystal displays an unusual defect-free uniform director alignment over hundreds of micrometres. We characterize the nematic order parameter, optical birefringence and elastic properties of this novel mesomorphic system.

Original language	English (US)
Pages (from-to)	11154-11159
Number of pages	6
Journal	Soft matter
Volume	7
Issue number	23
DOIs	https://doi.org/10.1039/c1sm06418e
State	Published - Nov 7 2011

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics

Access to Document

10.1039/c1sm06418e

Cite this

@article{e6aacc5a86894b08ae784a3c477ad66c,

title = "Liquid crystals of aqueous, giant graphene oxide flakes",

abstract = "We report the observation of liquid crystals formed by giant graphene oxide flakes (aspect ratio above 10000) suspended in water. As their concentration increases, the flakes undergo transitions from an isotropic dispersion to a biphasic system and then to a discotic nematic liquid crystal. The gel-like liquid crystal displays an unusual defect-free uniform director alignment over hundreds of micrometres. We characterize the nematic order parameter, optical birefringence and elastic properties of this novel mesomorphic system.",

author = "Budhadipta Dan and Natnael Behabtu and Angel Martinez and Evans, {Julian S.} and Kosynkin, {Dmitry V.} and Tour, {James M.} and Matteo Pasquali and Smalyukh, {Ivan I.}",

year = "2011",

month = nov,

day = "7",

doi = "10.1039/c1sm06418e",

language = "English (US)",

volume = "7",

pages = "11154--11159",

journal = "Soft matter",

issn = "1744-683X",

publisher = "Royal Society of Chemistry",

number = "23",

}

TY - JOUR

T1 - Liquid crystals of aqueous, giant graphene oxide flakes

AU - Dan, Budhadipta

AU - Behabtu, Natnael

AU - Martinez, Angel

AU - Evans, Julian S.

AU - Kosynkin, Dmitry V.

AU - Tour, James M.

AU - Pasquali, Matteo

AU - Smalyukh, Ivan I.

PY - 2011/11/7

Y1 - 2011/11/7

N2 - We report the observation of liquid crystals formed by giant graphene oxide flakes (aspect ratio above 10000) suspended in water. As their concentration increases, the flakes undergo transitions from an isotropic dispersion to a biphasic system and then to a discotic nematic liquid crystal. The gel-like liquid crystal displays an unusual defect-free uniform director alignment over hundreds of micrometres. We characterize the nematic order parameter, optical birefringence and elastic properties of this novel mesomorphic system.

AB - We report the observation of liquid crystals formed by giant graphene oxide flakes (aspect ratio above 10000) suspended in water. As their concentration increases, the flakes undergo transitions from an isotropic dispersion to a biphasic system and then to a discotic nematic liquid crystal. The gel-like liquid crystal displays an unusual defect-free uniform director alignment over hundreds of micrometres. We characterize the nematic order parameter, optical birefringence and elastic properties of this novel mesomorphic system.

UR - http://www.scopus.com/inward/record.url?scp=81455150138&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=81455150138&partnerID=8YFLogxK

U2 - 10.1039/c1sm06418e

DO - 10.1039/c1sm06418e

M3 - Article

AN - SCOPUS:81455150138

SN - 1744-683X

VL - 7

SP - 11154

EP - 11159

JO - Soft matter

JF - Soft matter

IS - 23

ER -

Liquid crystals of aqueous, giant graphene oxide flakes

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this