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Paper | Regular issue | Vol 91, No. 12, 2015, pp.2343-2353
Published online, 20th November, 2015
DOI: 10.3987/COM-15-13337
Synthesis, Molecular Structure, And Morphological Properties of Dendritic Tetra-2-thienylmethane

Kouzou Matsumoto,* Sota Kugo, Takeshi Suzuki, Daisuke Takajo, Akira Inaba, Yasukazu Hirao, Hiroyuki Kurata, and Takashi Kubo*

*Institute of Natural Sciences, Senshu University, 2-1-1 Higashimita, Kawasaki, Kanagawa 214-8580, Japan


Tetrakis(5-(tri-2-thienyl)methyl-2-thienyl)methane, in which as many as 16 thiophene rings connected with five sp3 carbon atoms, has been synthesized from tetra-2-thienylmethane in four steps. This compound can take both crystalline and glass state. Although a deformed structure is taken in the crystal, but it turns to be a metastable state. The second polymorph exhibits the melting point more than 30 °C higher than that of the metastable state, suggesting the effective intermolecular interaction.