Sanja Burazer (Avtor), Krešimir Molčanov (Avtor), Ana Šantić (Avtor), Teodoro Klaser (Avtor), Emmanuel Wenger (Avtor), Damir Pajić (Avtor), Zvonko Jagličić (Avtor), Jasminka Popović (Avtor), Marijana Jurić (Avtor)

Povzetek

: A novel one-dimensional (1D) oxalate-bridged coordination polymer of iron(III), {[NH(CH3 ) (C2H5 )2 ][FeCl2 (C2O4 )]}n (1), exhibits remarkable humidity-sensing properties and very high proton conductivity at room temperature (2.70 × 10−4 (Ω·cm)−1 at 298 K under 93% relative humidity), in addition to the independent antiferromagnetic spin chains of iron(III) ions bridged by oxalate groups (J = −7.58(9) cm−1 ). Moreover, the time-dependent measurements show that 1 could maintain a stable proton conductivity for at least 12 h. Charge transport and magnetic properties were investigated by impedance spectroscopy and magnetization measurements, respectively. Compound 1 consists of infinite anionic zig-zag chains [FeCl2 (C2O4 )]n n− and interposed diethylmethylammonium cations (C2H5 )2 (CH3 )NH+ , which act as hydrogen bond donors toward carbonyl oxygen atoms. Extraordinarily, the studied coordination polymer exhibits two reversible phase transitions: from the high-temperature phase HT to the mid-temperature phase MT at T ~213 K and from the mid-temperature phase MT to the low-temperature phase LT at T ~120 K, as revealed by in situ powder and single-crystal X-ray diffraction. All three polymorphs show large linear thermal expansion coefficients.

Ključne besede

koordinacijski polimeri;protonska prevodnost;detektor vlažnosti",;antiferomagnetna spinska veriga;oxalate-bridged coordination polymers;alkyl ammonium cations;single-crystal-to-singlecrystal transformations;proton conductivity;humidity-sensing property;antiferromagnetic spin chain;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FGG - Fakulteta za gradbeništvo in geodezijo
UDK: 544
COBISS: 124821763 Povezava se bo odprla v novem oknu
ISSN: 1996-1944
Št. ogledov: 13
Št. prenosov: 3
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: koordinacijski polimeri;protonska prevodnost;detektor vlažnosti";antiferomagnetna spinska veriga;
Vrsta dela (COBISS): Članek v reviji
Strani: 12 str.
Letnik: ǂVol. ǂ14
Zvezek: ǂiss. ǂ19, art. 5543
Čas izdaje: Oct. 2021
DOI: 10.3390/ma14195543
ID: 16777971