Effect of transition metal coordination on the photophysical properties of C sub 60. Triplet formation and lifetime in (. eta. sup 5 -C sub 9 H sub 7 )IR(CO)(. eta. sup 2 -C sub 60 )

Journal Article · Wed Aug 19 04:00:00 EDT 1992 · Inorganic Chemistry; (United States)

OSTI ID:7253064

Zhu, Yong; Koefod, R S; Devadoss, C; Shapley, J R; Schuster, G B ^[1]

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1. Univ. of Illinois, Urbana (United States)

This unique carbon cluster C{sub 60} shows remarkable photophysical properties. Laser excitation generates the excited singlet state, which undergoes very efficient intersystem crossing to a long-lived triplet state. The lifetime of the singlet state was reported initially as 33 ps, but more recent measurements provide values near 1 ns. The triplet-state lifetime has been reported variously as 40 {mu}s and {ge} 280 {mu}s in solution and as ca. 300 {mu}s in a toluene glass. It is of interest to examine how these relatively long excited-state lifetimes are affected in derivatives of C{sub 60}, in particular, in 1:1 complexes with transition metal centers. In this paper the authors report the first measurements on the formation and lifetime of an electronic excited state of a metalated C{sub 60} derivative.

• OSTI ID: 7253064
• Journal Information: Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 31:17; ISSN 0020-1669; ISSN INOCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CARBON
CARBONYLS
DATA
ELEMENTS
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
FULLERENES
INFORMATION
IRIDIUM COMPOUNDS
LASER SPECTROSCOPY
LIFETIME
NONMETALS
NUMERICAL DATA
REFRACTORY METAL COMPOUNDS
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS