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C. M. Sayes, J. D. Fortner, W. Gyo, D. Lyon, A. M. Boyd, K. D. Ausman, Y. J. Tao, B. Sitharaman, L. J. Wilson, J. B. Hughes, J. L. West and V. L. Colvin, “The Differential Cytotoxicity of Water-Soluble Fullerenes,” Nano Letters, Vol. 4, No. 10, 2004, pp. 1881-1887. doi:10.1021/nl0489586

has been cited by the following article:

• TITLE: Formation of Photosensitizing Crystalline C60 Particles by Ink-Jet Method

  AUTHORS: Masahito Ban, Fusako Sasaki

  KEYWORDS: Fullerene; Particle; Ink-Jet; Reactive Oxygen Species

  JOURNAL NAME: World Journal of Nano Science and Engineering, Vol.2 No.2, June 22, 2012

  ABSTRACT: The crystalline fullerene C60 particles were formed and immobilized on poly(dimethylsiloxane) (PDMS) substrates under the various discharge conditions by an ink-jet method, and investigated for the reactive oxygen species (ROS) generation property under visible light irradiation. The particles were synthesized by discharging a toluene solution dissolved C60 and poly(methyl methacrylate) (PMMA) with the ink-jet spotting system. The ROS generation was evaluated by comparisons of the fluorescence intensities measured for the formed particles under green laser irradiation and in a dark room using fluorescent dyes, 2’,7’-dichlorofluorescein diacetate and dihydroethidium. The results of transmission electron microscope (TEM) observation showed that the formed particles consisted of crystalline C60. The optimal ink-jet discharge conditions for synthesizing the particles to generate more ROS were found. In the case of the optimal conditions, the structure in which the needle-like particles were three-dimensionally formed was confirmed. The surface area of the crystalline C60 particles was calculated using the SEM observation results, and it was suggested that when the needle-like finer particles were three-dimensionally formed under the optimal conditions, increasing the surface area lead to an increase in the ROS generation amount.