Triplet state and dynamics of photoexcited C[sub 70]

Journal Article · Wed Sep 22 00:00:00 EDT 1993 · Journal of the American Chemical Society; (United States)

DOI:https://doi.org/10.1021/ja00072a027· OSTI ID:5042299

Levanon, H; Meiklyar, V; Michaeli, S; Gamliel, D ^[1]

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1. Hebrew Univ., Jerusalem (Israel)

The photoexcited triplet of C[sub 70], in toluene, was investigated by time-resolved EPR spectroscopy. Over the entire range of temperatures (8-213 K) the resulting early-time signal is attributed to the polarized EPR triplet spectrum, which evolves in time into a thermalized spectrum. Similar to the case of [sup 3]C[sub 60], the narrow liquid-phase spectrum is due to rotational narrowing of the thermal triplet. At both low and high temperatures the results indicate the coexistence of two triplets, differing greatly in their relaxation rates. 12 refs., 4 figs., 1 tab.

• OSTI ID: 5042299
• Journal Information: Journal of the American Chemical Society; (United States), Journal Name: Journal of the American Chemical Society; (United States) Vol. 115:19; ISSN JACSAT; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606 -- Other Materials-- Physical Properties-- (1992-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CARBON
DYNAMICS
ELECTRON SPIN RESONANCE
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FULLERENES
MAGNETIC RESONANCE
MECHANICS
MULTIPLETS
NONMETALS
RADIATION EFFECTS
RELAXATION
RESOLUTION
RESONANCE
TIME RESOLUTION
TIMING PROPERTIES
TRIPLETS