Single-crystal to single-crystal transformations as accompaning events in adsorption-desorption processes in coordination polymers
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538.9+548.73 (1)
Физика конденсированного состояния (жидкое и твердое состояние) (349)
Кристаллография (51)
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CHIŞCA, Diana, CROITOR, Lilia, PETUHOV, Oleg, KOROPCHANU, E., FONARI, Marina. Single-crystal to single-crystal transformations as accompaning events in adsorption-desorption processes in coordination polymers. In: Materials Science and Condensed Matter Physics, Ed. 9, 25-28 septembrie 2018, Chișinău. Chișinău, Republica Moldova: Institutul de Fizică Aplicată, 2018, Ediția 9, p. 96.
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Materials Science and Condensed Matter Physics
Ediția 9, 2018
Conferința "International Conference on Materials Science and Condensed Matter Physics"
9, Chișinău, Moldova, 25-28 septembrie 2018

Single-crystal to single-crystal transformations as accompaning events in adsorption-desorption processes in coordination polymers

CZU: 538.9+548.73

Pag. 96-96

Chişca Diana12, Croitor Lilia1, Petuhov Oleg3, Koropchanu E.23, Fonari Marina1
 
1 Institute of Applied Physics,
2 Tiraspol State University,
3 Institute of Chemistry
 
Disponibil în IBN: 17 ianuarie 2019


Rezumat

Metal–organic frameworks (MOFs) have drawn considerable attention in recent years and have been evaluated for their promising applications in gas storage, catalysis, separation, ion-exchange and drug delivery [1, 2]. The single-crystal to single-crystal (SC-SC) transformations that occur in metal organic frameworks (MOFs) and coordination polymers (CPs) are also importante for the development of new and useful materials including devices and sensors. Moreover, during the course of SC-SC transformation, the changes in the framework structure are accompanied by significant changes in properties such as host–guest behavior, photochemical reactivity, which help gain insights into the correlation between structure and property [3].  At the present work, we describe synthesis and structure of Co(II) and Cd(II) CPs of different dimensionalities, obtaining by using the dicarboxylic acids and mixed ligands systems composed of dicarboxylic acids and neutral nicotinamide ligands and their behavior upon exposure to the exogenous stimuli [4-9]. SC-SC transformations occur upon heating and include guest removal and uptake or exchange. These phenomena are also accompanied by the reconstruction of coordination and H-bonded networks, metal coordination cores, color change as well as by the changes in absorption and emission spectra. The structural transformations are supported by single-crystal and powder X-ray diffraction data.