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Title: Pressure-Induced Dimerization of C60 at Room Temperature as Revealed by an In Situ Spectroscopy Study Using an Infrared Laser

Journal Article · · Crystals
 [1];  [2];  [3];  [4]; ORCiD logo [5];  [6]
  1. Changchun Normal Univ., Changchun (China)
  2. Yangzhou Univ., Yangzhou (China); Hanyang Univ., Seoul (Korea, Republic of). HYU High Pressure Research Center
  3. Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai (China)
  4. Chinese Academy of Sciences (CAS), Beijing (China); Spallation Neutron Source Science Center, Dongguan (China)
  5. ShanghaiTech Univ., Shanghai (China)
  6. Yanshan Univ., Qinhuangdao (China). Center for High Pressure Science (CHiPS), State Key Lab. of Metastable Materials Science and Technology

Using in situ high-pressure Raman spectroscopy and X-ray diffraction, the polymerization and structure evaluation of C60 were studied up to 16 GPa at room temperature. The use of an 830 nm laser successfully eliminated the photo-polymerization of C60, which has interfered with the pressure effect in previous studies when a laser with a shorter wavelength was used as excitation. It was found that face-centered cubic (fcc) structured C60 transformed into simple cubic (sc) C60 due to the hint of free rotation for the C60 at 0.3 GPa. The pressure-induced dimerization of C60 was found to occur at about 3.2 GPa at room temperature. Our results suggest the benefit and importance of the choice of the infrared laser as the excitation laser.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA); Natural Science Foundation of China
Grant/Contract Number:
AC02-06CH11357; TZ2016001; FG02-99ER45775; 11404036; 11874076; U1530402
OSTI ID:
1608858
Journal Information:
Crystals, Vol. 10, Issue 3; ISSN 2073-4352
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

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