TY - JOUR
T1 - Enhanced Spin-Nuclei Couplings of Paramagnetic Azametallofullerene Hooped in Cycloparaphenylene
AU - Lu, Yuxi
AU - Zhao, Chong
AU - Zhang, Jie
AU - Li, Wang
AU - Liu, Linshan
AU - Zheng, Chaofeng
AU - Wang, Chunru
AU - Wang, Taishan
N1 - Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/3/9
Y1 - 2023/3/9
N2 - Azametallofullerene Y2@C79N has outstanding electron spin characteristics with potential application in the fields of magnetoreception system and precision measurement as a molecular spin probe. Herein, we report the spin modulation of Y2@C79N by means of host-guest interaction with a carbon nanoring of [12]Cycloparaphenylene ([12]CPP). By means of temperature-dependent electron paramagnetic resonance (EPR) measurements, the adjustable EPR signals of Y2@C79N⊂[12]CPP were observed, revealing the great effect of host-guest interaction on the spin and paramagnetic property of hooped Y2@C79N. The EPR signals of Y2@C79N⊂[12]CPP and pristine Y2@C79N were comparatively investigated in carbon disulfide and in solid state, and it was found that the Y2@C79N⊂[12]CPP complex exhibits enhanced spin-nuclei couplings compared to those of pristine Y2@C79N. We propose that the [12]CPP host can induce the orientation of the Y2@C79N guest, and consequently change the spin-nuclei couplings of Y2@C79N. This study would promote the creation of new molecular spin materials.
AB - Azametallofullerene Y2@C79N has outstanding electron spin characteristics with potential application in the fields of magnetoreception system and precision measurement as a molecular spin probe. Herein, we report the spin modulation of Y2@C79N by means of host-guest interaction with a carbon nanoring of [12]Cycloparaphenylene ([12]CPP). By means of temperature-dependent electron paramagnetic resonance (EPR) measurements, the adjustable EPR signals of Y2@C79N⊂[12]CPP were observed, revealing the great effect of host-guest interaction on the spin and paramagnetic property of hooped Y2@C79N. The EPR signals of Y2@C79N⊂[12]CPP and pristine Y2@C79N were comparatively investigated in carbon disulfide and in solid state, and it was found that the Y2@C79N⊂[12]CPP complex exhibits enhanced spin-nuclei couplings compared to those of pristine Y2@C79N. We propose that the [12]CPP host can induce the orientation of the Y2@C79N guest, and consequently change the spin-nuclei couplings of Y2@C79N. This study would promote the creation of new molecular spin materials.
UR - http://www.scopus.com/inward/record.url?scp=85148878037&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.3c00158
DO - 10.1021/acs.jpcc.3c00158
M3 - Article
AN - SCOPUS:85148878037
SN - 1932-7447
VL - 127
SP - 4660
EP - 4664
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 9
ER -