Compounds incorporating the tetrathiafulvalene (TTF) donor unit and one or two cyanoethynylethene (CEE) acceptor units were prepared by Knoevenagel condensations of highly unstable, TTF-linked propargylic aldehyde or ketone derivatives. The resulting TTF-CEEs are very strong chromophores with low-energy end-absorptions beyond 900 nm. The molecules experience reversible oxidations of the TTF unit, and the optical properties of the oxidised species were elucidated by spectroelectrochemistry.
通过高度不稳定的
TTF 连接
丙炔醛或酮衍
生物的 Knoevenagel 缩合反应,制备出了包含四噻富
戊二烯(
TTF)供体单元和一个或两个
氰基
乙炔勒烯(CEE)受体单元的化合物。由此制备的
TTF-CEE 是一种非常强的发色团,具有超过 900 纳米的低能末端吸收。这些分子经历了
TTF 单元的可逆氧化,并通过光谱电
化学阐明了氧化物的光学特性。