Breathing 3D Frameworks with T-Shaped Connecting Ligand Exhibiting Solvent Induction, Metal Ions Effect and Luminescent Properties

Abstract

Abstract:To study the structural effects in three-dimensional porous coordination polymers, three novel flexible porous coordination polymers-[Cd 2 (bpdc) 2 ](DMF) 3 (H 2 O) (1) and [M(bpdc)](DMF)(H 2 O) (M = Cd (2), Zn (3))-have been synthesized under solvothermal conditions with d 10 block metal ions and T-shaped connecting ligand. Complexes 1-3 crystallize in different space groups, but they display the same ant network. The first two complexes can transform into each other via the alteration of guest, whereas complex 3 shows no structural change. The structural details reveal that the size of metal ions might be responsible for the transformation of porous frameworks. Furthermore, luminescent properties have been explored, and a guest-dependent shift of emission peaks was observed, suggesting potential application of the complexes as a probe.

Effect of the Metal within Regioisomeric Paddle‐Wheel‐Type Metal–Organic Frameworks

“…There are several reports about the relationshipsb etween flexibility (as well as breathing behavior and gate opening) and the metal cation on MOFs. [14][15][16][17][18][19] In particular, Kaskel and co-workers prepared as eries of DUT-8M OFs (DUT = Dresden University of Te chnology) with Ni, Cu, Co, and Zn and studied the magnitude of the changes in flexibility with different metal nodes. DUT-8 species are also DABCO-based pillared MOFs with as lightly tilted 2,6-naphthalenedicarboxylic acid).…”

“…Three DMOFs of cobalt, copper, and zinc with ortho ‐ and para ‐NH 2 ‐Cl‐functionalities will be compared based on their gas adsorption differences after evacuation. There are several reports about the relationships between flexibility (as well as breathing behavior and gate opening) and the metal cation on MOFs . In particular, Kaskel and co‐workers prepared a series of DUT‐8 MOFs (DUT=Dresden University of Technology) with Ni, Cu, Co, and Zn and studied the magnitude of the changes in flexibility with different metal nodes.…”