Abstract
Novel organic–inorganic periodic mesoporous organosilicas (PMOs) were synthesized by linking lanthanide (Tb 3+, Eu 3+) complexes to the framework of mesoporous through the modified 4-mercaptobenzoic acid (MCBA–Si) using co-condensation method in the presence of Pluronic P123 surfactant as a template. 4-mercaptobenzoic acid (MCBA) grafted to the coupling agent 3-(triethoxysilyl)-propyl isocyanate (TEPIC) was used as the precursor for the preparation of periodic mesoporous materials. The two kinds of resulting materials (denoted as Ln–MCBA–PMOs, Ln = Tb, Eu) were characterized in detail by fourier-transform infrared spectra, ultraviolet–visible diffuse reflection absorption spectra, 29Si MAS NMR spectra, small-angle X-ray diffraction, nitrogen adsorption/desorption isotherms, photoluminescence spectroscopy and luminescence decay time measurements. The results reveal that luminescent periodic mesoporous materials have high surface area, uniformity in the mesopore structure and good crystallinity. Furthermore, the mesoporous material covalently bonded Tb 3+ complex (Tb–MCBA–PMOs) exhibits the stronger characteristic emission of Tb 3+ and longer lifetime than Eu–MCBA–PMOs due to the triplet state energy of organic ligand MCBA–Si matches with the emissive energy level of Tb 3+ very well.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
