Graphene oxide liquid crystal domains: quantification and role in tailoring viscoelastic behavior

Md Joynul Abedin, Tanesh D. Gamot, Samuel T. Martin, Muthana Ali, Kazi Imdadul Hassan, Meysam Sharifzadeh Mirshekarloo, Rico F. Tabor, Micah J. Green, Mainak Majumder

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

Graphene oxide liquid crystals (GOLCs) were exfoliated in a wide variety of solvents (water, ethylene glycol (EG), N-methyl-2-pyrrolidone (NMP), and dimethylformamide (DMF)) by high-speed shearing of graphite oxide. Quantitative polarized light imaging of the equilibrium nematic phases of the lyotropic GOLCs gives insights into the extent of aggregation and quantifiable textural features such as domain size, d. Large nematic domains >100 μm with a high overall degree of order were obtained in water and ethylene glycol, in contrast to 5-50 μm domains in NMP and DMF at comparable volume fractions. Comprehensive rheological studies of these GOLCs indicate that larger domains correlate with higher viscosity and higher elasticity, and scaling analysis shows a power-law dependence of the Ericksen number (Er) with domain size (Er α d3.09). The improved understanding of the relationship between the microstructure and flow properties of GOLCs leads us to an approach of mixed solvent-based GOLCs as a means to tune viscoelastic properties. We demonstrate this approach for the formation of shear-aligned GOLC films for advanced flexible electronic applications such as all-carbon conductive films and thermal heaters.

Original languageEnglish
Pages (from-to)8957-8969
Number of pages13
JournalACS Nano
Volume13
Issue number8
DOIs
Publication statusPublished - 27 Aug 2019

Keywords

  • coating
  • graphene oxide
  • isotropic
  • liquid crystal domain
  • nematic
  • viscoelasticity

Cite this

Abedin, Md Joynul ; Gamot, Tanesh D. ; Martin, Samuel T. ; Ali, Muthana ; Hassan, Kazi Imdadul ; Mirshekarloo, Meysam Sharifzadeh ; Tabor, Rico F. ; Green, Micah J. ; Majumder, Mainak. / Graphene oxide liquid crystal domains : quantification and role in tailoring viscoelastic behavior. In: ACS Nano. 2019 ; Vol. 13, No. 8. pp. 8957-8969.
@article{07d5fd78655247c99d8ed6bd62bea445,
title = "Graphene oxide liquid crystal domains: quantification and role in tailoring viscoelastic behavior",
abstract = "Graphene oxide liquid crystals (GOLCs) were exfoliated in a wide variety of solvents (water, ethylene glycol (EG), N-methyl-2-pyrrolidone (NMP), and dimethylformamide (DMF)) by high-speed shearing of graphite oxide. Quantitative polarized light imaging of the equilibrium nematic phases of the lyotropic GOLCs gives insights into the extent of aggregation and quantifiable textural features such as domain size, d. Large nematic domains >100 μm with a high overall degree of order were obtained in water and ethylene glycol, in contrast to 5-50 μm domains in NMP and DMF at comparable volume fractions. Comprehensive rheological studies of these GOLCs indicate that larger domains correlate with higher viscosity and higher elasticity, and scaling analysis shows a power-law dependence of the Ericksen number (Er) with domain size (Er α d3.09). The improved understanding of the relationship between the microstructure and flow properties of GOLCs leads us to an approach of mixed solvent-based GOLCs as a means to tune viscoelastic properties. We demonstrate this approach for the formation of shear-aligned GOLC films for advanced flexible electronic applications such as all-carbon conductive films and thermal heaters.",
keywords = "coating, graphene oxide, isotropic, liquid crystal domain, nematic, viscoelasticity",
author = "Abedin, {Md Joynul} and Gamot, {Tanesh D.} and Martin, {Samuel T.} and Muthana Ali and Hassan, {Kazi Imdadul} and Mirshekarloo, {Meysam Sharifzadeh} and Tabor, {Rico F.} and Green, {Micah J.} and Mainak Majumder",
year = "2019",
month = "8",
day = "27",
doi = "10.1021/acsnano.9b02830",
language = "English",
volume = "13",
pages = "8957--8969",
journal = "ACS Nano",
issn = "1936-0851",
publisher = "American Chemical Society",
number = "8",

}

Graphene oxide liquid crystal domains : quantification and role in tailoring viscoelastic behavior. / Abedin, Md Joynul; Gamot, Tanesh D.; Martin, Samuel T.; Ali, Muthana; Hassan, Kazi Imdadul; Mirshekarloo, Meysam Sharifzadeh; Tabor, Rico F.; Green, Micah J.; Majumder, Mainak.

In: ACS Nano, Vol. 13, No. 8, 27.08.2019, p. 8957-8969.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Graphene oxide liquid crystal domains

T2 - quantification and role in tailoring viscoelastic behavior

AU - Abedin, Md Joynul

AU - Gamot, Tanesh D.

AU - Martin, Samuel T.

AU - Ali, Muthana

AU - Hassan, Kazi Imdadul

AU - Mirshekarloo, Meysam Sharifzadeh

AU - Tabor, Rico F.

AU - Green, Micah J.

AU - Majumder, Mainak

PY - 2019/8/27

Y1 - 2019/8/27

N2 - Graphene oxide liquid crystals (GOLCs) were exfoliated in a wide variety of solvents (water, ethylene glycol (EG), N-methyl-2-pyrrolidone (NMP), and dimethylformamide (DMF)) by high-speed shearing of graphite oxide. Quantitative polarized light imaging of the equilibrium nematic phases of the lyotropic GOLCs gives insights into the extent of aggregation and quantifiable textural features such as domain size, d. Large nematic domains >100 μm with a high overall degree of order were obtained in water and ethylene glycol, in contrast to 5-50 μm domains in NMP and DMF at comparable volume fractions. Comprehensive rheological studies of these GOLCs indicate that larger domains correlate with higher viscosity and higher elasticity, and scaling analysis shows a power-law dependence of the Ericksen number (Er) with domain size (Er α d3.09). The improved understanding of the relationship between the microstructure and flow properties of GOLCs leads us to an approach of mixed solvent-based GOLCs as a means to tune viscoelastic properties. We demonstrate this approach for the formation of shear-aligned GOLC films for advanced flexible electronic applications such as all-carbon conductive films and thermal heaters.

AB - Graphene oxide liquid crystals (GOLCs) were exfoliated in a wide variety of solvents (water, ethylene glycol (EG), N-methyl-2-pyrrolidone (NMP), and dimethylformamide (DMF)) by high-speed shearing of graphite oxide. Quantitative polarized light imaging of the equilibrium nematic phases of the lyotropic GOLCs gives insights into the extent of aggregation and quantifiable textural features such as domain size, d. Large nematic domains >100 μm with a high overall degree of order were obtained in water and ethylene glycol, in contrast to 5-50 μm domains in NMP and DMF at comparable volume fractions. Comprehensive rheological studies of these GOLCs indicate that larger domains correlate with higher viscosity and higher elasticity, and scaling analysis shows a power-law dependence of the Ericksen number (Er) with domain size (Er α d3.09). The improved understanding of the relationship between the microstructure and flow properties of GOLCs leads us to an approach of mixed solvent-based GOLCs as a means to tune viscoelastic properties. We demonstrate this approach for the formation of shear-aligned GOLC films for advanced flexible electronic applications such as all-carbon conductive films and thermal heaters.

KW - coating

KW - graphene oxide

KW - isotropic

KW - liquid crystal domain

KW - nematic

KW - viscoelasticity

UR - http://www.scopus.com/inward/record.url?scp=85070607640&partnerID=8YFLogxK

U2 - 10.1021/acsnano.9b02830

DO - 10.1021/acsnano.9b02830

M3 - Article

C2 - 31314988

AN - SCOPUS:85070607640

VL - 13

SP - 8957

EP - 8969

JO - ACS Nano

JF - ACS Nano

SN - 1936-0851

IS - 8

ER -