Photochemical Stitching of a Tubularly Assembled Hexabenzocoronene Amphiphile by Dimerization of Coumarin Pendants
作者:Jin Motoyanagi、Takanori Fukushima、Noriyuki Ishii、Takuzo Aida
DOI:10.1021/ja060593z
日期:2006.4.5
lambda > 300 nm, the nanotubes in the solid state and suspension both underwent dimerization of the coumarin pendants, affording covalently stitched nanotubes, which were hardly soluble in CHCl3, a good solvent of 1. In contrast, a thin film cast from a homogeneous solution of 1 was intact to photoirradiation. Owing to the reversible nature of the photochemical stitching, both negative and positive
一种添加香豆素的两亲性六邻六苯并可酮 (1) 自组装形成石墨纳米管。在 λ > 300 nm 的照射下,固态和悬浮液中的纳米管都经历了香豆素悬垂物的二聚化,得到共价缝合的纳米管,它们几乎不溶于 CHCl3,一种良好的溶剂 1。相比之下,从1 的均匀溶液对光辐照是完整的。由于光化学缝合的可逆性质,石墨纳米管的负图案和正图案均通过光刻后处理在硅基板上显影。