Solvent induced different morphologies of bis(propyl)triethoxysilane substituted perylenediimide and their optical properties.

Nano/micro-structure of bis(propyl)triethoxysilane substituted perylenediimide (1) with nanoparticle and twisted microrod morphologies were obtained by reprecipitation method induced by water and petroleum ether, respectively. It is believed that the different nucleation and growth processes involved are responsible for the formation of the nano/micro-structure with different morphologies of 1. UV-vis absorption and photoluminescence measurements show that their UV-vis absorption and photoluminescence properties are different from each other as well as their monomer and bulk materials due to the different effects on the charge transfer (CT) transition energy levels caused by their different aggregation behaviors.