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Preparation of polyynes by liquid-phase laser ablation using different irradiation target materials and solvents

✍ Scribed by Ryutaro Matsutani; Takuya Kakimoto; Hiromasa Tanaka; Kazuo Kojima

Publisher: Elsevier Science
Year: 2011
Tongue: English
Weight: 367 KB
Volume: 49
Category: Article
ISSN: 0008-6223
DOI: 10.1016/j.carbon.2010.08.044

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✦ Synopsis

Polyynes were prepared from pellets of a perylene derivative, 3,4,9,10-perylene tetracarboxylic dianhydride (PTCDA), and graphite by liquid-phase laser ablation, using solvents of methanol, ethanol, 1-propanol, 1-butanol, t-butyl alcohol, n-hexane, and decalin. The amounts of polyynes produced from PTCDA strongly depended on the polarity of the solvent, while those from graphite did not. Polar functional groups of acid-anhydride side chains in PTCDA are believed to influence the amounts of C 2 radicals produced by laser ablation. The long-chain polyyne C 28 H 2 was detected in a chromatogram of a solution obtained from a graphite pellet and solvent decalin.

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Preparation of long-chain polyynes of C24H2 and C26H2 by liquid-phase laser ablation in decalin

✍ Kohei Inoue; Ryutaro Matsutani; Tomoe Sanada; Kazuo Kojima 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 222 KB

using the complicated acetylene coupling method. On the other hand, in simple liquidphase laser ablation method, we have recently obtained the longest-chain polyyne of C 22 H 2 . In the present study, we report the synthesis of long-chain polyynes of C 24 H 2 and C 26 H 2 from graphite pellets in so