2 research outputs found
Synergistic Induction of Solvent and Ligand-Substitution in Single-Crystal to Single-Crystal Transformations toward a MOF with Photocatalytic Dye Degradation
External-stimuli
responsiveness as found in natural organisms
and
smart materials is attractive for functional materials scientists
who attempt to design and imitate fascinating behavior into their
materials. Herein, we report a couple of new solvent-responsive isostructural
two-dimensional cationic metal–organic frameworks (MOFs) of
Mn(II) (1a) and Zn(II) (2a) that undergo
unprecedented single-crystal to single-crystal (SCSC) transformation
toward the corresponding isostructural three-dimensional MOFs of Mn(II)
(1b) and Zn(II) (2b). The 2D MOFs 1a and 2a have been effortlessly and rapidly
synthesized via the microwave-heating technique. The SCSC transformations
are synergistically induced by solvent and ligand-substitution reactions
and able to be triggered by water, methanol, ethanol, and n-propanol. Time-dependent SCSC transformations were studied
by in situ X-ray diffraction. Investigations on photodegradation of
methyl orange showed that Zn-MOF 2b has higher efficiency
than Mn-MOF 1b under UV–C irradiation at 300 min,
94.27%, and 21.91%, respectively. The influence of charge on the dye
molecules, heterogeneity of the catalysis, and •OH radical-scavenging test was studied. First-principles computations
suggest that the high photocatalytic activity of 2b may
be attributed to its suitable band-edge position for redox reactions
Synergistic Induction of Solvent and Ligand-Substitution in Single-Crystal to Single-Crystal Transformations toward a MOF with Photocatalytic Dye Degradation
External-stimuli
responsiveness as found in natural organisms
and
smart materials is attractive for functional materials scientists
who attempt to design and imitate fascinating behavior into their
materials. Herein, we report a couple of new solvent-responsive isostructural
two-dimensional cationic metal–organic frameworks (MOFs) of
Mn(II) (1a) and Zn(II) (2a) that undergo
unprecedented single-crystal to single-crystal (SCSC) transformation
toward the corresponding isostructural three-dimensional MOFs of Mn(II)
(1b) and Zn(II) (2b). The 2D MOFs 1a and 2a have been effortlessly and rapidly
synthesized via the microwave-heating technique. The SCSC transformations
are synergistically induced by solvent and ligand-substitution reactions
and able to be triggered by water, methanol, ethanol, and n-propanol. Time-dependent SCSC transformations were studied
by in situ X-ray diffraction. Investigations on photodegradation of
methyl orange showed that Zn-MOF 2b has higher efficiency
than Mn-MOF 1b under UV–C irradiation at 300 min,
94.27%, and 21.91%, respectively. The influence of charge on the dye
molecules, heterogeneity of the catalysis, and •OH radical-scavenging test was studied. First-principles computations
suggest that the high photocatalytic activity of 2b may
be attributed to its suitable band-edge position for redox reactions