• Title/Summary/Keyword: $C_{60}$ 풀러렌

Search Result 13, Processing Time 0.028 seconds

Mechanical Behavior of Al/C60-fullerenes Nanocomposites (풀러렌이 분산된 알루미늄기지 나노복합재의 기계적 거동)

  • Choi, Hyun-Joo
    • Composites Research
    • /
    • v.26 no.2
    • /
    • pp.111-115
    • /
    • 2013
  • Aluminum-based composites containing $C_{60}$-fullerenes are produced by hot rolling of ball-milled powder. The grain size of aluminum is effectively reduced to ~100 nm during ball-milling processes, leading to grain refinement strengthening of the composite. Furthermore, $C_{60}$-fullerenes are gradually dispersed during ball-milling processes and hence the strength of the composite increases with the volume of $C_{60}$-fullerenes. The composite containing 10 vol% $C_{60}$-fullerenes with a grain size of ~ 100 nm exhibits ~1 GPa of compressive strength.

Reactions and Properties of Fullerene ($C_{60}$) (풀러렌의 성질과 반응)

  • Lim, Choong-Sun;Hong, Seong-Kyu;Ko, Weon-Bae
    • Elastomers and Composites
    • /
    • v.45 no.2
    • /
    • pp.74-79
    • /
    • 2010
  • In this review, the properties of buckminsterfullerene and its organic and polymeric reactions were focused. In addition, polymer blending with $C_{60}$ will be briefly introduced. As soon as $C_{60}$ was discovered, chemists put their efforts to explore its reactivity with other compounds. The knowledge of the organic reactions with $C_{60}$ was extended to construct different types of fullerene polymers such as side chain fullerene polymers, main chain fullerene polymers, star shaped fullerene polymers, and dendritic fullerene polymers.

Preparation of Fullerene Oxides by Fullerenes[$C_{60},C_{70}$] with Several Oxidants under Ultrasonic Condition (초음파 조건에서 산화제를 이용한 풀러렌 산화물의 제조)

  • Kown, Sock-Chan;Jeong, Hong-Seok;Ko, Weon-Bae
    • Elastomers and Composites
    • /
    • v.38 no.2
    • /
    • pp.147-156
    • /
    • 2003
  • Synthesis of fullerene oxides by fullerenes [$C_{60},\;C_{70}$] and several oxidants such as benzoylperoxide, trichloroisocyanuric acid, methyltrioxorhenium(VII), iodosobenzene, phosphorous pentoxide take place under ultrasonic condition at room temperature. The MALDI-TOF MS,UV-visible spectra and HPLC analysis confirmed that the products of fullerenes oxidation are [$C_{60}(O)_n$], ($n=1{\sim}3$ or n=1) and [$C_{70}(O)_n$], ($n=1{\sim}2$ or n=1). As compared with the reactivity of epoxidation of fullerenes [$C_{60},\;C_{70}$], the reaction rate of $C_{70}$ was lower than that of $C_{60}$ under same reaction condition.

The Oxidation of Fullerene[$C_{60}$] using Several Oxidants under Microwave Irradiation (마이크로파 조건에서 여러가지 산화제를 이용한 풀러렌[$C_{60}$의 산화반응)

  • Ko, Weon-Bae;Hwang, Sung-Ho;Ahn, Ju-Hyun
    • Elastomers and Composites
    • /
    • v.40 no.1
    • /
    • pp.45-52
    • /
    • 2005
  • Synthesis or fullerene oxides[$C_{60}(O)_n$] ($n=1{\sim}4$ or n=1) by fullerene[$C_{60}$] and several oxidants such as 3-chloroperoxy benzoic acid, benzoyl peroxide, trichloroisocyanuric acid, and chromium(VI) oxide took place under microwave irradiation. The reactivity in solid state of fullerene[$C_{60}$] with various oxidants under same microwave rendition increased in order or 3- chloroperoxy benzoic acid > benzoyl peroxide > trichloroisocyanuric acid $\simeq$chromium(VI) oxide. The MALDI-TOF-MS, UV-visible spectra and HPLC analysis confirmed that the products of fullerene oxidation were [$C_{60}(O)_n$] ($n=1{\sim}4$ or n=1).

Ultrasonic Monitoring of Reaction of Fullerene$[C_{60}]$ with 3-Chloroperoxy Benzoic acid (풀러렌$[C_{60}]$과 3- Chloroperoxy Benzoic acid 반응의 초음파적 조사)

  • Ko, Weon-Bae;Buckin, Vitaly
    • Elastomers and Composites
    • /
    • v.41 no.1
    • /
    • pp.57-62
    • /
    • 2006
  • The reaction of fullerene$[C_{60}]$ and 3-chloroperoxy benzoic acid in 1,2-dichlorobenzene was monitored by high resolution ultrasonic spectroscopy and the product of reaction by fullerene $[C_{60}]$ and 3-chloroperoxy benzoic acid in 1,2-dichlorobenzene was characterized using MALDI-TOF-MS spectra.

Application of Graphene Nanoribbon Trench for C60 Fullerene Shuttle Device: Molecular Dynamics Simulations (풀러렌 셔틀 소자로 그래핀 나노리본 트렌치 응용에 관한 분자동력학 시뮬레이션 연구)

  • Kwon, Oh-Kuem;Kang, Jeong Won
    • Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
    • /
    • v.8 no.1
    • /
    • pp.887-894
    • /
    • 2018
  • We investigated the position controlling C60 fullerene encapsulated into a graphene-nanoribbon trench via classical molecular dynamics simulations. The graphene-nanoribbon trench can provide nanoscale empty spaces, and a C60 encapsulated therein can be considered as media for a nanoelectromechanical shuttle device. The classical molecular dynamics simulations presented here provide information on the potential application of a graphene-nanoribbon trench in a C60 shuttle device. Driving forces applied to C60 resulted in its motion toward the edges of the graphene-nanoribbon trench, the suction forces induced at both edges were balanced with the driving forces, and finally, the C60 fullerene gradually settled on the edges of the graphene-nanoribbon trench after several oscillations. The results of the present simulation suggest the importance of graphene-nanoribbon trenches encapsulating fullerenes in a wide range of applications in the field of nanotechnology.

Quantum Mechanical Investigations for the Interactions between Fullerene and Encapsulated Waters (풀러렌-물 클러스터의 상호작용에 대한 양자 역학적 이론 연구)

  • Kim, Sung-Hyun;Shin, Chang-Ho;Kim, Ji-Sun;Kang, So-Yung;Kim, Seung-Joon
    • Journal of the Korean Chemical Society
    • /
    • v.59 no.1
    • /
    • pp.9-17
    • /
    • 2015
  • The density functional theory (DFT) calculations on $(H_2O)_n@C_{60}$, (n=1-10) complexes have been performed to elucidate hydrogen interaction between fullerene and water clusters. The optimized geometries, harmonic vibrational frequencies, and binding energies are predicted at various levels of theory. The harmonic vibrational frequencies for the molecules considered in this study show all real numbers implying true minima. We also compare the H-bond interaction between $(H_2O)_n$ and $(H_2O)_n@C_{60}$, (n=1-10) clusters.

Preparation of Self-Assembled of $\alpha$-D-Mannosyl Fullerene[$C_{60}$]-Gold Nanoparticle Films (자기조립법에 의한 $\alpha$-D-만노실 풀러렌[$C_{60}$]-금 나노입자 필름 제조)

  • Yoon, Shin-Sook;Hwang, Sung-Ho;Ko, Weon-Bae
    • Elastomers and Composites
    • /
    • v.43 no.4
    • /
    • pp.264-270
    • /
    • 2008
  • $\alpha$-D-mannosyl fullerene[$C_{60}$]-functionalized gold nanoparticle films were selfassembled using the layer-by-layer method on the reactive of glass slides functionlized with 3-aminopropyltrimethoxysilane. The functionalized glass slides were alternately soaked in the solutions containing $\alpha$-D-mannosyl fullerene[$C_{60}$] and 4-aminothiophenoxide/hexanethiolate-protected gold nanoparticles. $\alpha$-D-mannosyl fullerene[$C_{60}$]-functionalized gold nanoparticle films have grown up to 5 layers depending on the immersion time. The self-assembled nanoparticle films were characterized using UV-vis spectroscopy showed that the surface plasmon band of gold at 530 nm gradually became more evident as successive layers were added to the films.

Photocatalytic Degradation of Organic Dyes with Nanomaterials (나노소재를 이용한 유기염료 광촉매 분해 반응)

  • Hong, Sung-Kyu;Yu, Gu-Yong;Lim, Chung-Sun;Ko, Weon-Bae
    • Elastomers and Composites
    • /
    • v.45 no.3
    • /
    • pp.206-211
    • /
    • 2010
  • Zinc oxide(ZnO) nanoparticles were synthesized by reacting an aqueous-alcoholic zinc nitrate solution to sodium hydroxide under ultrasonic irradiation at room temperature. The fullerene($C_{60}$) and ZnO nanoparticles were heated individually in an electric furnace for two hours at $700^{\circ}C$. The morphology and optical properties of the $C_{60}$ and ZnO nanoparticles were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM) and ultraviolet/visible (UV-vis) spectroscopy. The photocatalytic activity of the heated and unheated the $C_{60}$ and ZnO nanoparticles for the decomposition of methylene blue(MB), methyl orange(MO) and rhodamine B(RhB) was examined using UV-vis spectroscopy.

Theoretical Study for Structures and Spectroscopic Properties of C60(CH2)nOH (n=0~2) and C60(OH)2 (C60(CH2)nOH (n=0~2)와 C60(OH)2의 분자구조 및 분광학적 성질에 관한 이론 연구)

  • Lee, Ju-Young;Kim, Seung-Joon
    • Journal of the Korean Chemical Society
    • /
    • v.55 no.6
    • /
    • pp.905-911
    • /
    • 2011
  • The possible minimum structures of $C_{60}(CH_2)_nOH$ (n=0~2) and $C_{60}(OH)_2$have been optimized using density functional theory (DFT) with the 6-311G (d,f) basis set. The harmonic vibrational frequencies and IR intensities are also determined to confirm that all the optimized geometries are true minima. Also zero-point vibrational energies (ZPVE) have been considered to predict the binding energies. The predicted binding energy of $C_{60}CH_2OH$ is about 10 kcal/mol more stable than the binding energy of $C_{60}OH$.