Our laboratory has focused on compounds with biradical character that are expected to exhibit unusual physical properties. Compounds having biradical character are described as resonance hybrids of a closed-shell structure called Kekulé form and an open-shell diradical structure. Previously, an indeno[2,1-b]fluorene derivative, one of compounds with biradical character, was synthesized in our laboratory and was found to exhibit its first excitation absorption band at 1700 nm in spite of the small
我々の研究室は、異常な物性を示すことが予想されるビラジカル性化合物に注目している。ビラジカル性化合物とは、ケクレ構造と呼ばれる閉殻の構造と開殻性のジラジカル構造の二つの極限構造の共鳴混成体として記述される化合物である。以前、当研究室でビラジカル性化合物の一つであるindeno[2,1-b]fluorene誘導体を合成したところ、20