Selective separation of C[sub 60] and C[sub 70] fullerenes on tetraphenylporphyrin-silica gel stationary phases

Journal Article · Wed Dec 15 04:00:00 EST 1993 · Analytical Chemistry (Washington); (United States)

DOI:https://doi.org/10.1021/ac00072a028· OSTI ID:5070021

Kibbey, C E; Savina, M R; Parseghian, B K; Francis, A H; Meyerhoff, M E ^[1]

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1. Univ. of Michigan, Ann Arbor, MI (United States)

We report on the utility of several tetraphenylporphyrin- (TPP-) silica stationary phases (metalated and unmetalated) for C[sub 60]/C[sub 70] separations and demonstrate that these supports provide the highest selectivity factor ([alpha]c[sub 70]/c[sub 60] [ge] 4) reported to date for this separation in 100% toluene. The relatively high solubility of fullerenes in toluene should make larger, better packed columns well-suited for preparative separations of these species, especially the purification of C[sub 60]. While the ability of the new porphyrin columns to separate higher fullerenes remains to be examined in detail, it is likely that similar improvements in resolution for these high molecular weight compounds may also be possible with the new porphyrin supports and/or addition of modifiers to the eluent. It appears that [pi]-[pi] interactions play a role in the preferential retention of C[sub 70] fullerene on the porphyrin-based columns. 17 refs., 3 figs., 1 tab.

• OSTI ID: 5070021
• Journal Information: Analytical Chemistry (Washington); (United States), Journal Name: Analytical Chemistry (Washington); (United States) Vol. 65:24; ISSN 0003-2700; ISSN ANCHAM
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400100* -- Analytical & Separations Chemistry
400201 -- Chemical & Physicochemical Properties
ADSORBENTS
ALKYLATED AROMATICS
AROMATICS
CARBON
CARBOXYLIC ACIDS
CHROMATOGRAPHY
COMPLEXES
ELEMENTS
FULLERENES
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INDIUM COMPLEXES
LIQUID COLUMN CHROMATOGRAPHY
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PORPHYRINS
PURIFICATION
SEPARATION PROCESSES
SILICA GEL
SOLUBILITY
TOLUENE
ZINC COMPLEXES