AI Article Synopsis
- The flexibility of two-dimensional coordination polymers (2D-CPs) allows them to respond differently to external factors, which can be influenced by their layer structures.
- This study focuses on a specific cyanide-bridged 2D-CP, showing how its crystal shape affects its layer arrangement and overall properties.
- The results reveal that smaller nanoplates exhibit different structural behaviors compared to larger rod-shaped particles, leading to increased sensitivity to water and enhanced thermal expansion, along with having extra sites for water adsorption.
Article Abstract
Layer flexibility in two-dimensional coordination polymers (2D-CPs) contributes to several functional materials as it results in anisotropic structural response to external stimuli. Chemical modification is a common technique for modifying layer structures. This study demonstrates that crystal morphology of a cyanide-bridged 2D-CP of type [Mn(salen)] [ReN(CN) ] (1) consisting of flexible undulating layers significantly impacts the layer configuration and assembly. Nanoplates of 1 showed an in-plane contraction of layers with a longer interlayer distance compared to the micrometer-sized rod-type particles. These effects by crystal morphology on the structure of the 2D-CP impacted the structural flexibility, resulting in dual-functional changes: the enhancement of the sensitivity of structural transformation to water adsorption and modification of anisotropic thermal expansion of 1. Moreover, the nanoplates incorporated new adsorption sites within the layers, resulting in the uptake of an additional water molecule compared to the micrometer-sized rods.
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| http://dx.doi.org/10.1002/chem.202103404 | DOI Listing |
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