Ternary rare earth sulfoxide-functionalized mesoporous hybrids Phen-RE (OBDS(BSAB))3-SBA-15 (RE = Eu, Tb): Coordination bonding assembly, characterization, and photoluminescence

Novel mesoporous SBA-15 type of hybrid materials (OBDS-SBA-15 and BSAB-SBA-15) are synthesized by co-condensation of tetraethoxysilane (TEOS) and the modified sulfoxide (OBDSSi and BSABSi, OBDS = oxobenzyldimethyl sulphoxide, BSAB = benzylsulfingl acetylbenzene) in the presence of Pluronic P123 surfactant as a template. The preservation of the organic ligand structure during the hydrothermal synthesis and the surfactant extraction process is confirmed by Fourier transform infrared FTIR, TGA and XRD measurements. Novel luminescent organic–inorganic mesoporous hybrids containing RE3+ (Eu3+, Tb3+) complexes and functionalized mesoporous silica matrix SBA-15 (OBDS-SBA-15 and BSAB-SBA-15) have been assembled with chemical bonding, which are designated as Phen-RE(OBDS)3-SBA-15 and Phen-RE(PPS)3-SBA-15, are obtained by introducing the RE(NO3)3 and 1,10-phenanthroline (Phen) complexes into the hybrid materials via the coordination reaction. The mesostructure of hybrid materials (OBDS-SBA-15 and BSAB-SBA-15) is characterized by TEM, XRD and N2 adsorption measurements. The luminescence properties of these resulting materials are characterized in details, which reveals that the Phen-RE(OBDS)3-SBA-15 mesoporous hybrids exhibit stronger luminescent intensities, longer lifetimes and higher luminescent quantum efficiencies than those of Phen-RE(BSAB)3-SBA-15 hybrids.

Novel organic–inorganic mesoporous luminescent hybrid containing RE3+ (Eu3+, Tb3+) complexes covalently boned to the functionalized mesoporous silica matrix SBA-15 (OBDS-SBA-15 and BSAB-SBA-15), were obtained by introducing the RE(NO3)3 and 1,10-phenanthroline (phen) complexes into the hybrid materials via the coordination reaction..Figure optionsDownload as PowerPoint slideHighlights
► Novel linkages of functionalized sulfoxide derivative.
► New lanthanide mesoporous hybrids.
► Luminescence in visible region.