Controlling the incorporation and release of C60 in nanometer-scale hollow spaces inside single-wall carbon nanohorns

Ryota Yuge; Masako Yudasaka; Jin Miyawaki; Yoshimi Kubo; Toshinari Ichihashi; Hideto Imai; Eiichi Nakamura; Hiroyuki Isobe; Hideki Yorimitsu; Sumio Iijima

doi:10.1021/jp052814d

Controlling the incorporation and release of C₆₀ in nanometer-scale hollow spaces inside single-wall carbon nanohorns

Ryota Yuge, Masako Yudasaka, Jin Miyawaki, Yoshimi Kubo, Toshinari Ichihashi, Hideto Imai, Eiichi Nakamura, Hiroyuki Isobe, Hideki Yorimitsu, Sumio Iijima

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

43 Citations (Scopus)

Abstract

We succeeded in large-scale preparation of single-wall carbon nanohorns (SWNH) encapsulating C₆₀ molecules in a liquid phase at room temperature using a "nano-precipitation" method, that is, complete evaporation of the toluene from a C₆₀-SWNH-toluene mixture. The C₆₀ molecules were found to occupy 6-36% of the hollow space inside the SWNH, depending on the initial quantity of C₆₀. We showed that the C₆₀ in C₆₀@SWNHox was quickly released in toluene, and the release rate decreased by adding ethanol to toluene. Numerical analysis of the release profiles indicated that there were fast and slow release processes. We consider that the incorporation quantity and the release rate of C ₆₀ were controllable in/from SWNHs because SWNHs have large diameters, 2-5 nm.

Original language	English
Pages (from-to)	17861-17867
Number of pages	7
Journal	Journal of Physical Chemistry B
Volume	109
Issue number	38
DOIs	https://doi.org/10.1021/jp052814d
Publication status	Published - Sept 29 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1021/jp052814d

Cite this

@article{42e0e0aaec6140a09aca5d1c0e81d232,

title = "Controlling the incorporation and release of C60 in nanometer-scale hollow spaces inside single-wall carbon nanohorns",

abstract = "We succeeded in large-scale preparation of single-wall carbon nanohorns (SWNH) encapsulating C60 molecules in a liquid phase at room temperature using a {"}nano-precipitation{"} method, that is, complete evaporation of the toluene from a C60-SWNH-toluene mixture. The C60 molecules were found to occupy 6-36% of the hollow space inside the SWNH, depending on the initial quantity of C60. We showed that the C60 in C60@SWNHox was quickly released in toluene, and the release rate decreased by adding ethanol to toluene. Numerical analysis of the release profiles indicated that there were fast and slow release processes. We consider that the incorporation quantity and the release rate of C 60 were controllable in/from SWNHs because SWNHs have large diameters, 2-5 nm.",

author = "Ryota Yuge and Masako Yudasaka and Jin Miyawaki and Yoshimi Kubo and Toshinari Ichihashi and Hideto Imai and Eiichi Nakamura and Hiroyuki Isobe and Hideki Yorimitsu and Sumio Iijima",

year = "2005",

month = sep,

day = "29",

doi = "10.1021/jp052814d",

language = "English",

volume = "109",

pages = "17861--17867",

journal = "Journal of Physical Chemistry B",

issn = "1520-6106",

publisher = "American Chemical Society",

number = "38",

}

TY - JOUR

T1 - Controlling the incorporation and release of C60 in nanometer-scale hollow spaces inside single-wall carbon nanohorns

AU - Yuge, Ryota

AU - Yudasaka, Masako

AU - Miyawaki, Jin

AU - Kubo, Yoshimi

AU - Ichihashi, Toshinari

AU - Imai, Hideto

AU - Nakamura, Eiichi

AU - Isobe, Hiroyuki

AU - Yorimitsu, Hideki

AU - Iijima, Sumio

PY - 2005/9/29

Y1 - 2005/9/29

N2 - We succeeded in large-scale preparation of single-wall carbon nanohorns (SWNH) encapsulating C60 molecules in a liquid phase at room temperature using a "nano-precipitation" method, that is, complete evaporation of the toluene from a C60-SWNH-toluene mixture. The C60 molecules were found to occupy 6-36% of the hollow space inside the SWNH, depending on the initial quantity of C60. We showed that the C60 in C60@SWNHox was quickly released in toluene, and the release rate decreased by adding ethanol to toluene. Numerical analysis of the release profiles indicated that there were fast and slow release processes. We consider that the incorporation quantity and the release rate of C 60 were controllable in/from SWNHs because SWNHs have large diameters, 2-5 nm.

AB - We succeeded in large-scale preparation of single-wall carbon nanohorns (SWNH) encapsulating C60 molecules in a liquid phase at room temperature using a "nano-precipitation" method, that is, complete evaporation of the toluene from a C60-SWNH-toluene mixture. The C60 molecules were found to occupy 6-36% of the hollow space inside the SWNH, depending on the initial quantity of C60. We showed that the C60 in C60@SWNHox was quickly released in toluene, and the release rate decreased by adding ethanol to toluene. Numerical analysis of the release profiles indicated that there were fast and slow release processes. We consider that the incorporation quantity and the release rate of C 60 were controllable in/from SWNHs because SWNHs have large diameters, 2-5 nm.

UR - http://www.scopus.com/inward/record.url?scp=26844468807&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=26844468807&partnerID=8YFLogxK

U2 - 10.1021/jp052814d

DO - 10.1021/jp052814d

M3 - Article

C2 - 16853291

AN - SCOPUS:26844468807

SN - 1520-6106

VL - 109

SP - 17861

EP - 17867

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 38

ER -

Controlling the incorporation and release of C₆₀ in nanometer-scale hollow spaces inside single-wall carbon nanohorns

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this