Extended germa[N]pericyclynes: synthesis and characterization

Hiroki Tanimoto; Taro Fujiwara; Junta Mori; Tomohiko Nagao; Yasuhiro Nishiyama; Tsumoru Morimoto; Shunichiro Ito; Kazuo Tanaka; Yoshiki Chujo; Kiyomi Kakiuchi

doi:10.1039/C6DT04633A

Extended germa[N]pericyclynes: synthesis and characterization†

Hiroki Tanimoto,

*^a Taro Fujiwara,‡^a Junta Mori,‡^a Tomohiko Nagao,^a Yasuhiro Nishiyama,^a Tsumoru Morimoto,^a Shunichiro Ito,^b Kazuo Tanaka,

^b Yoshiki Chujo^b and Kiyomi Kakiuchi*^a

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* Corresponding authors

^a Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayamacho, Ikoma, Japan
E-mail: tanimoto@ms.naist.jp, kakiuchi@ms.naist.jp
Fax: +81 743 72 6089
Tel: +81 743 72 6084

^b Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
E-mail: kazuo123@chujo.synchem.kyoto-u.ac.jp, chujo@chujo.synchem.kyoto-u.ac.jp
Fax: +81 75 383 2605
Tel: +81 75 383 2604

Abstract

We herein describe the syntheses and characterization of extended germa[N]pericyclynes, which are macrocycles composed of germanium–butadiyne units. The obtained novel extended germa[4]–[8]pericyclynes were characterized by X-ray crystallography, UV-Vis spectroscopy, fluorescence and phosphorescence emission spectroscopy, and cyclic voltammetry, and exhibited characteristic absorptions and emissions. Density functional theory (DFT) calculations suggested smaller HOMO–LUMO gap energy compared to that of general germapericyclynes.

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Extended germa[N]pericyclynes: synthesis and characterization†

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Extended germa[N]pericyclynes: synthesis and characterization

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