Partial separation of fullerenes by gradient sublimation

Journal Article · Thu Sep 30 00:00:00 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), Vol. 97:39; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

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