UV-Excited Luminescence in Porous Organosilica Films with Various Organic Components.

ABSTRACT: UV-induced photoluminescence of organosilica films with ethylene and benzene bridging groups in their matrix and terminal methyl groups on the pore wall surface was studied to reveal optically active defects and understand their origin and nature. The careful selection of the film's precursors and conditions of deposition and curing and analysis of chemical and structural properties led to the conclusion that luminescence sources are not associated with the presence of oxygen-deficient centers, as in the case of pure SiO₂. It is shown that the sources of luminescence are the carbon-containing components that are part of the low-k-matrix, as well as the carbon residues formed upon removal of the template and UV-induced destruction of organosilica samples. A good correlation betwe

SUBMITTER: Rasadujjaman M 

PROVIDER: S-EPMC10143820 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature