Naslov
Elastic flexibility in crystalline coordination polymers controlled via halogen bonds

Autori
Đaković, Marijana ; Aakeroy, Christer B.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
3rd International Symposium on Halogen Bonding, Book of Abstracts / - , 2018, 57-57

Skup
3rd International Symposium on Halogen Bonding

Mjesto i datum
Greenville (SC), Sjedinjene Američke Države, 10.06.2018. - 14.06.2018

Vrsta sudjelovanja
Plenarno

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
halogen bonding ; coordination polymers

Sažetak
Mechanical flexibility, an essential requirement for adaptability and survival of most living systems, is rare among crystalline materials, and most synthetic crystalline materials are largely incapable of mobility and dynamic responsiveness to an external mechanical stimulus. A few cases of crystalline organic solids capable of elastic and inelastic bending have been reported recently, and the macroscopic behaviour is likely facilitated by intermolecular interactions of widely differing strengths arranged in a highly anisotropic manner. In addition, a structural feature observed in many flexible organic materials, as well as in the only reported flexible crystalline coordination compound, is also the presence of stacking interactions that result in a short ‘4.0 Å’ crystallographic axis. Herein we present a bottom-up engineering of the required structural features through careful choice of metal ion and ligands. The essential structural anisotropy, as well as the variability in chemical bond strength, was successfully attained through a combination of 1-D coordination polymers linked via directional but substantially weaker intermolecular interactions.[4] The self-assembly of targeted coordination polymers resulted in materials with bulk flexibility. Although subtle, differences in intermolecular interactions introduced via halogen and hydrogen bonds, showed to be critical for inducing and controlling the highly unusual mechanical responses of crystalline metal-based polymeric materials.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA