Partial separation of fullerenes by gradient sublimation

Journal Article · Thu Sep 30 04:00:00 EDT 1993 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100141a033· OSTI ID:5526306

Yeretzian, C; Wiley, J B; Holczer, K; Su, T; Nguyen, S; Kaner, R B; Whetten, R L ^[1]

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1. Univ. of California, Los Angeles, CA (United States)

An experimental technique is investigated to separate/enrich fullerenes of metallofullerenes, exploiting differences in sublimation temperatures without the use of solvents. Fullerenes are sublimed out of the soot and deposited on a quartz rod along a temperature gradient (gradient sublimation). In a position-sensitive experiment the composition of the deposit on the rod is monitored by laser-desorption mass spectrometry. Strongly enriched regions containing specific fullerene molecules (i.e., C[sub 84] or LaC[sub 82]) are observed. Furthermore, C[sub 74], which could not be extracted from the soot by organic solvents, sublimes out of the soot. 26 refs., 6 figs.

• OSTI ID: 5526306
• Journal Information: Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 97:39; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360600 -- Other Materials
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CARBON
DESORPTION
ELECTROMAGNETIC RADIATION
ELEMENTS
EVAPORATION
FULLERENES
LASER RADIATION
MASS SPECTROSCOPY
MINERALS
NONMETALS
OXIDE MINERALS
PHASE TRANSFORMATIONS
QUARTZ
RADIATIONS
SEPARATION PROCESSES
SOOT
SORPTION
SPECTROSCOPY
SUBLIMATION
SURFACE PROPERTIES