Characterization of mesoporous thin films formed with added organophosphonate and organosilane

摘要

The effects of added N-trimethoxysilylpropyl-N, N, N-trimethylammonium (TMAC) and pinacolyl methylphosphonate (PMP) on the order and porosity of mesoporous thin films formed with bis(triethoxysilyl)ethane (BTSE) were examined by XRD and TEM. The as-prepared and ethanol extracted films formed with TMAC and the combination of TMAC and PMP exhibited P6mm type hexagonal mesostructure with a large unit cell. Calcination of the TMAC functionalized sample yielded a film with 2-D cubic pore ordering. Addition of PMP during film formation did not affect mesopore order but increasing the amount of added PMP resulted in d-spacing shrinkage.