TY - JOUR
T1 - Quenching and Restoration of Orbital Angular Momentum through a Dynamic Bond in a Cobalt(II) Complex
AU - Su, Sheng Qun
AU - Wu, Shu Qi
AU - Baker, Michael L.
AU - Bencok, Peter
AU - Azuma, Nobuaki
AU - Miyazaki, Yuji
AU - Nakano, Motohiro
AU - Kang, Soonchul
AU - Shiota, Yoshihito
AU - Yoshizawa, Kazunari
AU - Kanegawa, Shinji
AU - Sato, Osamu
N1 - Funding Information:
This work was supported by JSPS KAKENHI grant number 17H01197 and 18K14244. This work was performed under the Cooperative Research Program of “Network Joint Research Center for Materials and Devices”. This work was supported by the MEXT Project of “Integrated Research Consortium on Chemical Sciences”. L-edge XAS and XMCD experiments were carried out with the support of the Diamond Light Source for time on Beamline I10 under proposal SI17723-1. 2,3
Publisher Copyright:
© 2020 American Chemical Society.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/7/1
Y1 - 2020/7/1
N2 - Orbital angular momentum plays a vital role in various applications, especially magnetic and spintronic properties. Therefore, controlling orbital angular momentum is of paramount importance to both fundamental science and new technological applications. Many attempts have been made to modulate the ligand-field-induced quenching effects of orbital angular momentum to manipulate magnetic properties. However, to date, reported changes in the magnitude of orbital angular momentum are small in both molecular and solid-state magnetic materials. Moreover, no effective methods currently exist to modulate orbital angular momentum. Here we report a dynamic bond approach to realize a large change in orbital angular momentum. We have developed a Co(II) complex that exhibits coordination number switching between six and seven. This cooperative dynamic bond switching induces considerable modulation of the ligand field, thereby leading to substantial quenching and restoration of the orbital angular momentum. This switching mechanism is entirely different from those of spin-crossover and valence tautomeric compounds, which exhibit switching in spin multiplicity.
AB - Orbital angular momentum plays a vital role in various applications, especially magnetic and spintronic properties. Therefore, controlling orbital angular momentum is of paramount importance to both fundamental science and new technological applications. Many attempts have been made to modulate the ligand-field-induced quenching effects of orbital angular momentum to manipulate magnetic properties. However, to date, reported changes in the magnitude of orbital angular momentum are small in both molecular and solid-state magnetic materials. Moreover, no effective methods currently exist to modulate orbital angular momentum. Here we report a dynamic bond approach to realize a large change in orbital angular momentum. We have developed a Co(II) complex that exhibits coordination number switching between six and seven. This cooperative dynamic bond switching induces considerable modulation of the ligand field, thereby leading to substantial quenching and restoration of the orbital angular momentum. This switching mechanism is entirely different from those of spin-crossover and valence tautomeric compounds, which exhibit switching in spin multiplicity.
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U2 - 10.1021/jacs.0c02257
DO - 10.1021/jacs.0c02257
M3 - Article
C2 - 32508091
AN - SCOPUS:85087468091
VL - 142
SP - 11434
EP - 11441
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 26
ER -