TY - JOUR
T1 - A Chemically Triggered and Thermally Switched Dielectric Constant Transition in a Metal Cyanide Based Crystal
AU - Shi, Chao
AU - Zhang, Xi
AU - Cai, Ying
AU - Yao, Ye Feng
AU - Zhang, Wen
N1 - Publisher Copyright:
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2015/5/18
Y1 - 2015/5/18
N2 - A dielectric constant transition is chemically triggered and thermally switched in (HPy)2[Na(H2O)Co(CN)6] (2, HPy=pyridinium cation) by single-crystal-to-single-crystal transformation and structural phase transition, respectively. Upon dehydration, (HPy)2[Na(H2O)2Co(CN)6] (1) transforms to its semi-hydrated form 2, accompanying a transition from a low-dielectric state to a high-dielectric state, and vice versa. This dielectric switch is also realized by a structural phase transition in 2 that occurs between room- and lowerature phases, and which corresponds to high- and low-dielectric states, respectively. The switching property is due to the variation in the environment surrounding the HPy cation, that is, the hydrogen-bonding interactions and the crystal packing, which exert predominant influences on the dynamics of the cations that transit between the static and motional states.
AB - A dielectric constant transition is chemically triggered and thermally switched in (HPy)2[Na(H2O)Co(CN)6] (2, HPy=pyridinium cation) by single-crystal-to-single-crystal transformation and structural phase transition, respectively. Upon dehydration, (HPy)2[Na(H2O)2Co(CN)6] (1) transforms to its semi-hydrated form 2, accompanying a transition from a low-dielectric state to a high-dielectric state, and vice versa. This dielectric switch is also realized by a structural phase transition in 2 that occurs between room- and lowerature phases, and which corresponds to high- and low-dielectric states, respectively. The switching property is due to the variation in the environment surrounding the HPy cation, that is, the hydrogen-bonding interactions and the crystal packing, which exert predominant influences on the dynamics of the cations that transit between the static and motional states.
KW - cyanide
KW - phase transitions
KW - pyridinium
KW - single-crystal-to-single-crystal transformations
KW - switchable dielectric constant
UR - https://www.scopus.com/pages/publications/85027921771
U2 - 10.1002/anie.201501344
DO - 10.1002/anie.201501344
M3 - 文章
AN - SCOPUS:85027921771
SN - 1433-7851
VL - 54
SP - 6206
EP - 6210
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 21
ER -