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Updated: Aug 31, 2025
Microwave-assisted Intramolecular Dehydrogenative Diels-Alder Reactions for the Synthesis of Functionalized Naphthalenes/Solvatochromic Dyes
Published on: April 1, 2013
Growth of Pentacene Crystals by Naphthalene Flux Method
Xiaoran Yang1, Mingzhe Li1, Akira Maeno1
1Division of Applied Chemistry, Hokkaido University, Kita-13 Nishi 8, Sapporo 060-8628, Japan.
Abstract:
We report the crystal growth of pentacene from a solution of naphthalene. The solubility of pentacene in naphthalene was evaluated by optical absorption at elevated temperature. The crystal growth was performed in an H-shaped sealed glass tube or metal vessels sealed with ultrahigh-vacuum compatible flanges placed in heated two-zone aluminum blocks. The obtained crystals had a single-crystal-like appearance and flat surface. They were made of aligned microtwins of the "bulk type" (interlayer spacing 14.5 Å) polymorph.
