Pregled bibliografske jedinice broj: 1206267
Variable adaptability of coordination polymers of cadmium(II) to external mechanical stimuli
Variable adaptability of coordination polymers of cadmium(II) to external mechanical stimuli // Acta Crystallographica Section A
Prag, Češka Republika, 2021. str. C391-C391 (pozvano predavanje, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 1206267 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Variable adaptability of coordination polymers of
cadmium(II) to external mechanical stimuli
Autori
Đaković, Marijana ; Pisačić, Mateja
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Acta Crystallographica Section A
/ - , 2021, C391-C391
Skup
The XXV IUCr Congress
Mjesto i datum
Prag, Češka Republika, 14.08.2021. - 22.08.2021
Vrsta sudjelovanja
Pozvano predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
kristali ; mehanička fleksibilnost ; kadmij
(crystals ; mechanical flexibility ; elastic ; cadmium)
Sažetak
Recently, the traditional way of perceiving crystalline matter as static and brittle has started to change, and nowadays we are witnessing a growing number of examples were crystals display a plethora of flexible response to a variety of stimuli. They were found to move, jump, split, flex, twist, curl, explode, or to display a salient behaviour under UV radiation or heating, but lately they were also found to respond to the applied external mechanical force. Organic molecular crystals present a majority of examples of crystal adaptability to external stimuli, whilst metal-organic adaptable crystals are still quite rare. In the first report on mechanical flexibility of coordination polymers we have shown that crystals of a family of Cd(II) coordination polymers are capable of displaying not only exceptional mechanical elasticity but also variable flexible responses to applied external pressure. They can actually differently tolerate exerted force and the different tolerability is a result of slight differences in the importance of intermolecular interactions in crystal packing. We the aim to understand the feature more deeply and to shed light on the underlying principles of the phenomenon, we have recently discovered unprecedented difference in plasticity of crystals of closely related class of Cd(II) coordination polymers. In addition to variable plasticity, crystals also display remarkable pliability and ductility, not hitherto observed for metal-containing molecular crystals, which we present herein. To understand the phenomenon and rationalize observations, in addition to micro-focus SCXRD and AFM, we have also performed a series of custom-designed experiments and complemented those with an in-depth theoretical analysis. The results pointed at intermolecular interactions as the crucial structural feature in determining the type and extent of these highly unusual mechanical responses of crystalline metal-based polymeric materials.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Projekti:
--IP-2019-04-1242 - Od oblika do funkcije: Fleksibilni kristalni materijali s kontroliranim mehaničkim odzivom (FlexibleCrystals) (Đaković, Marijana) ( CroRIS)
Ustanove:
Prirodoslovno-matematički fakultet, Zagreb