The aggregation of an alkyl-C60 derivative as a function of concentration, temperature and solvent type

Research output: Contribution to journalArticlepeer-review

Standard

The aggregation of an alkyl-C60 derivative as a function of concentration, temperature and solvent type. / Hollamby, Martin J.; Smith, Catherine F.; Britton, Melanie M.; Danks, Ashleigh E.; Schnepp, Zoe; Grillo, Isabelle; Pauw, Brian R.; Kishimura, Akihiro; Nakanishi, Takashi.

In: Physical Chemistry Chemical Physics, Vol. 20, No. 5, 07.02.2018, p. 3373-3380.

Research output: Contribution to journalArticlepeer-review

Harvard

APA

Vancouver

Author

Hollamby, Martin J. ; Smith, Catherine F. ; Britton, Melanie M. ; Danks, Ashleigh E. ; Schnepp, Zoe ; Grillo, Isabelle ; Pauw, Brian R. ; Kishimura, Akihiro ; Nakanishi, Takashi. / The aggregation of an alkyl-C60 derivative as a function of concentration, temperature and solvent type. In: Physical Chemistry Chemical Physics. 2018 ; Vol. 20, No. 5. pp. 3373-3380.

Bibtex

@article{e8ba64bba73e4fb180d76a8e2ae04f31,
title = "The aggregation of an alkyl-C60 derivative as a function of concentration, temperature and solvent type",
abstract = "Contrast-variation small-angle neutron scattering (CV-SANS), small-angle X-ray scattering (SAXS), nuclear magnetic resonance (NMR) measurements of diffusion and isothermal titration calorimetry (ITC) are used to gain insight into the aggregation of an alkyl-C60 derivative, molecule 1, in n-hexane, n-decane and toluene as a function of concentration and temperature. Results point to an associative mechanism of aggregation similar to other commonly associating molecules, including non-ionic surfactants or asphaltenes in non-aqueous solvents. Little aggregation is detected in toluene, but small micelle-like structures form in n-alkane solvents, which have a C60-rich core and alkyl-rich shell. The greatest aggregation extent is found in n-hexane, and at 0.1 M the micelles of 1 comprise around 6 molecules at 25 °C. These micelles become smaller when the concentration is lowered, or if the solvent is changed to n-decane. The solution structure is also affected by temperature, with a slightly larger aggregation extent at 10 °C than at 25 °C. At higher concentrations, for example in solutions of 1 above 0.3 M in n-decane, a bicontinuous network becomes apparent. Overall, these findings aid our understanding of the factors driving the assembly of alkyl-π-conjugated hydrophobic amphiphiles such as 1 in solution and thereby represent a step towards the ultimate goal of exploiting this phenomenon to form materials with well-defined order.",
author = "Hollamby, {Martin J.} and Smith, {Catherine F.} and Britton, {Melanie M.} and Danks, {Ashleigh E.} and Zoe Schnepp and Isabelle Grillo and Pauw, {Brian R.} and Akihiro Kishimura and Takashi Nakanishi",
year = "2018",
month = feb,
day = "7",
doi = "10.1039/c7cp06348b",
language = "English",
volume = "20",
pages = "3373--3380",
journal = "Physical Chemistry Chemical Physics",
issn = "1463-9076",
publisher = "Royal Society of Chemistry",
number = "5",

}

RIS

TY - JOUR

T1 - The aggregation of an alkyl-C60 derivative as a function of concentration, temperature and solvent type

AU - Hollamby, Martin J.

AU - Smith, Catherine F.

AU - Britton, Melanie M.

AU - Danks, Ashleigh E.

AU - Schnepp, Zoe

AU - Grillo, Isabelle

AU - Pauw, Brian R.

AU - Kishimura, Akihiro

AU - Nakanishi, Takashi

PY - 2018/2/7

Y1 - 2018/2/7

N2 - Contrast-variation small-angle neutron scattering (CV-SANS), small-angle X-ray scattering (SAXS), nuclear magnetic resonance (NMR) measurements of diffusion and isothermal titration calorimetry (ITC) are used to gain insight into the aggregation of an alkyl-C60 derivative, molecule 1, in n-hexane, n-decane and toluene as a function of concentration and temperature. Results point to an associative mechanism of aggregation similar to other commonly associating molecules, including non-ionic surfactants or asphaltenes in non-aqueous solvents. Little aggregation is detected in toluene, but small micelle-like structures form in n-alkane solvents, which have a C60-rich core and alkyl-rich shell. The greatest aggregation extent is found in n-hexane, and at 0.1 M the micelles of 1 comprise around 6 molecules at 25 °C. These micelles become smaller when the concentration is lowered, or if the solvent is changed to n-decane. The solution structure is also affected by temperature, with a slightly larger aggregation extent at 10 °C than at 25 °C. At higher concentrations, for example in solutions of 1 above 0.3 M in n-decane, a bicontinuous network becomes apparent. Overall, these findings aid our understanding of the factors driving the assembly of alkyl-π-conjugated hydrophobic amphiphiles such as 1 in solution and thereby represent a step towards the ultimate goal of exploiting this phenomenon to form materials with well-defined order.

AB - Contrast-variation small-angle neutron scattering (CV-SANS), small-angle X-ray scattering (SAXS), nuclear magnetic resonance (NMR) measurements of diffusion and isothermal titration calorimetry (ITC) are used to gain insight into the aggregation of an alkyl-C60 derivative, molecule 1, in n-hexane, n-decane and toluene as a function of concentration and temperature. Results point to an associative mechanism of aggregation similar to other commonly associating molecules, including non-ionic surfactants or asphaltenes in non-aqueous solvents. Little aggregation is detected in toluene, but small micelle-like structures form in n-alkane solvents, which have a C60-rich core and alkyl-rich shell. The greatest aggregation extent is found in n-hexane, and at 0.1 M the micelles of 1 comprise around 6 molecules at 25 °C. These micelles become smaller when the concentration is lowered, or if the solvent is changed to n-decane. The solution structure is also affected by temperature, with a slightly larger aggregation extent at 10 °C than at 25 °C. At higher concentrations, for example in solutions of 1 above 0.3 M in n-decane, a bicontinuous network becomes apparent. Overall, these findings aid our understanding of the factors driving the assembly of alkyl-π-conjugated hydrophobic amphiphiles such as 1 in solution and thereby represent a step towards the ultimate goal of exploiting this phenomenon to form materials with well-defined order.

UR - http://www.scopus.com/inward/record.url?scp=85041667462&partnerID=8YFLogxK

U2 - 10.1039/c7cp06348b

DO - 10.1039/c7cp06348b

M3 - Article

AN - SCOPUS:85041667462

VL - 20

SP - 3373

EP - 3380

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

SN - 1463-9076

IS - 5

ER -