Tunable fluorescence emission based on multi-layered MOF-on-MOF

Abstract

ZIF-8@dye@ZIF-8@dye materials with different fluorescence emission in dispersed and solid states were both obtained by tuning the initial encapsulation concentration of dye and changing the structure of the inner and outer ZIF-8@dye layers.

Dye encapsulation and one-pot synthesis of microporous–mesoporous zeolitic imidazolate frameworks for CO2 sorption and adenosine triphosphate biosensing

“…An in situ encapsulation and seed-mediated synthesis was reported for dye encapsulation of perylene and RhB. 34 The procedure involved the chemical addition of the reactants with trimethylamine and stirring at 300 rpm for 3 hours at room temperature. On the other hand, our synthesis procedure requires a short reaction time without the need for organic solvents such as methanol 34 or dimethyl formamide.…”

“…34 The procedure involved the chemical addition of the reactants with trimethylamine and stirring at 300 rpm for 3 hours at room temperature. On the other hand, our synthesis procedure requires a short reaction time without the need for organic solvents such as methanol 34 or dimethyl formamide. 25 Our synthesis procedure for this study takes place in water.…”

Metal–organic frameworks (MOFs) as fluorescence sensors: principles, development and prospects

“…Some fluorescent molecules can be loaded in the MOF because of the MOF's porosity. Lanthanide ions, 39 dyes, [40][41][42][43][44] and precious metal complexes [45][46][47][48] 49 Maintaining their ligand-based or metal-based fluorescent signals after loading a guest fluorescent molecule, or loading two or more guest fluorescent molecules is also a good way to obtain MOFbased sensors that have multiple fluorescence. 50,51 In addition, multiple fluorescence can be achieved through partial sensitization.…”

“…Some fluorescent molecules can be loaded in the MOF because of the MOF's porosity. Lanthanide ions, 39 dyes, 40–44 and precious metal complexes 45–48 are commonly used guest fluorescent molecules. MOFs can prevent agglomeration and improve the stability of guest molecules.…”

Synthesis Strategies and Electrochemical Research Progress of Nano/Microscale Metal–Organic Frameworks

“…Xia et al synthesized ZIF‐8 as the MOF scaffold to encapsulate two types of size‐matching fluorescent molecules. [ 173 ] By adjusting the encapsulation mode and concentration, different fluorescent‐emitting materials ranging from blue to red including white were obtained. In addition to ZIF‐8, UiO‐66‐NH 2 also possesses unique fluorescence properties.…”