Synthesis and Crystallochromy of 1,4,7,10-Tetraalkyltetracenes: Tuning of Solid-State Optical Properties of Tetracenes by Alkyl Side-Chain Length
作者:Chitoshi Kitamura、Yasushi Abe、Takuya Ohara、Akio Yoneda、Takeshi Kawase、Takashi Kobayashi、Hiroyoshi Naito、Toshiki Komatsu
DOI:10.1002/chem.200901668
日期:2010.1.18
5‐dialkylfurans as starting materials (alkyl=methyl to hexyl). Surprisingly, the solid‐state color of the tetracenes ranges through yellow, orange, and red. Both yellow and red solids are obtained for the butyl derivative. Optical properties in solution show no marked differences; however, those in the solid state show characteristics that vary with alkyl side‐chain length: methyl, propyl, and pentyl derivatives
我们使用新的2,6-萘二炔前体和2,5-二烷基呋喃作为起始原料(烷基=甲基至己基)合成了一系列1,4,7,10-四烷基四氢呋喃。出人意料的是,四碳的固态颜色范围是黄色,橙色和红色。对于丁基衍生物,获得黄色和红色固体。溶液中的光学性质无明显差异。但是,固态的那些化合物的特征随烷基侧链的长度而变化:甲基,丙基和戊基的衍生物为橙色;甲基,丙基和戊基的衍生物为橙色。乙基和丁基衍生物为黄色;另一个丁基和己基衍生物是红色的。X射线分析表明分子结构为平面,半椅子或椅子形式。椅子形式采用人字形布置,其他形式采用平行滑动布置。