We investigate the structural and electronic properties of SnX and SnX2 (X = S, Se) monolayers and further explore the separation and migration of photo-generated electrons/holes and redox capabilities.
Presented herein is a group of highly
stable Zr-based metal–organic
frameworks with bowl-shaped dihydroanthracene-based tetratopic linkers
as building blocks. Structural analysis reveals that these frameworks
are all two-dimensional but comprise three distinct connectivities
of Zr6 nodes. By using the steric hindrance of the nonplanar
linker, the connectivity of Zr6 node can be tuned from
8-c to unusual 4-c. Further, through either one-pot synthesis or postsynthetic
linker installation strategies, the connectivity of Zr6 node can be tuned from 8-c to 10-c by the insertion of a secondary
linear dicarboxylate linker, from which not only the temperature-dependent
flexibility of the structure can be effectively controlled with enhanced
rigidity and thermal stability but also a scaffold for postsynthetic
metalation of Pd(II) catalyst for Heck coupling reaction is offered.
The two-dimensional (2D) material family is expanding fast as novel metal chalcogenides are being continually fabricated and intriguingly, plenty of them are ideal candidates for future nanoscale electronic and magnetic devices.
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