Systematic extension of the length of the organic conjugated π-system of mesoporous silica-based organic–inorganic hybrid materials†
Abstract
The first systematic investigations on the optical properties of mesoporous silica-based organic–inorganic hybrid materials is reported. It could be shown that the optical absorption properties of the incorporated organic functionalities are tuneable by adjusting the length of the conjugation of the π-electron systems or by integration of heteroatoms therein. For this purpose, two new bis-silylated compounds with 18 π-electron systems, namely