N,N Bis(2 hydroxyethyl)amino 1,3 benzenediol(1a) and its analogs 1b￣1g have been synthesized. By condensation of squaric acid with 1a￣1g, a class of novel multiarm squaraines, namely 1,3 bis[4 N,N bis(2 hydroxyethyl)amino 2,6 dihydroxyl phenyl] squaraine(2a) and its analogs(2b￣2g) were obtained. The compounds were designed to improve the donor acceptor donor charge transfer(D A D CT) of squaraines. The spectra properties of the compounds have been discussed.
Chinese Journal of Applied Chemistry