Synthesis and fluorescent properties of lanthanide complex covalently bonded to porous silica monoliths

Modular Thiol–Ene Chemistry Approach towards Mesoporous Silica Monoliths with Organically Modified Pore Walls

“…[1,2] Mesoporous silica monoliths are of interest for many applications, [3] including catalysis, [4] molecular recognition, [5][6][7][8][9] drug delivery, [10] optics, and sensing. [11][12][13][14] Among others, the properties of silica monoliths depend on the chemical nature of the pore walls. Pure sol-gel silica is moderately hydrophilic, but hydrophilicity can be controlled through several parameters, such as the degree of silanol con-densation, passivation of residual surface silanol groups, [15] or co-condensation reactions with hydrophobic comonomers.…”

In situ synthesis of a highly crystalline Tb-doped YAG nanophosphor using the mesopores of silica monoliths as a template

“…Ordered mesoporous silica sieves like MCM41 and SBA15 have been widely used as host matrices for various luminescent materials including rare earth complexes, rare earth metal oxides, rare earth fluorides, dye molecules and quantum dots. [20][21][22][23][24][25][26][27][28][29][30][31][32] However, ordered mesoporous silica sieves require relatively expensive surfactants and triblock copolymers (e.g. P123, F127) used as structure-directing agents.…”

“…Silica xerogels with a tuneable pore diameter have also been synthesized, using alkoxide-based sol-gel methods, to yield stable bulk silica monoliths without using any structuredirecting agents. 31 These materials may have more commercial potential because of low-cost and widely available silica precursors and reactants.…”

“…This one-step synthesis method yields stable hybrid luminescent materials with strong interactions (usually with covalent bonds) between the host silica framework and the luminescent compounds, thus reducing the leaching of guest compounds from the silica matrix. 31 However, it is recognized that the difference in reaction rates between silica and guest precursors might lead to non-homogeneous dispersion of luminescent compounds and thus phase separation can occur. 21 In addition, a decrease in emission intensity is often observed in the final hybrid material compared to the pure luminescent material.…”

A metal–organic framework for selectively sensing of PO43− anion in aqueous solution

“…Due to the attractive photophysical properties of lanthanide ions, it is a popular strategy to utilize lanthanide ions to form a highly luminescent material [3][4][5][6][7][8][9][10][11][12]. Meanwhile metal-organic frameworks (MOFs) have rapidly gained growing attention due to the characteristics such as structure diversity, predictability and high porosity [13,14].…”