Singlet excited state (S1) of higher fullerenes C76 and C84: Correlation between lifetime and HOMO-LUMO energy gap

Hyun Sun Cho; Tae Kyu Ahn; Sung Ik Yang; Seung Min Jin; Dongho Kim; Seong Keun Kim; Hong Doo Kim

doi:10.1016/S0009-2614(03)00845-5

Singlet excited state (S₁) of higher fullerenes C₇₆ and C₈₄: Correlation between lifetime and HOMO-LUMO energy gap

Hyun Sun Cho
, Tae Kyu Ahn
, Sung Ik Yang
, Seung Min Jin
, Dongho Kim
, Seong Keun Kim
, Hong Doo Kim

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Photophysical properties of higher fullerenes C₇₆ and C₈₄ were investigated in toluene by steady-state and transient absorption spectroscopy. Lifetimes of 75 and 35 ps were measured for the lowest excited state of C₇₆ and C₈₄, respectively, which are much shorter than the values estimated from previous triplet-triplet absorption studies. It was found that the internal conversion rate constants, k_IC, increased as the size of fullerene increased, and that k_IC was strongly correlated with the HOMO-LUMO energy gap, ΔE_g. From this correlation, an empirical relationship was obtained: log k_IC (s^-1)=14.59 - 3.39 ΔE_g (eV).

Original language	English
Pages (from-to)	292-298
Number of pages	7
Journal	Chemical Physics Letters
Volume	375
Issue number	3-4
DOIs	https://doi.org/10.1016/S0009-2614(03)00845-5
State	Published - 3 Jul 2003
Externally published	Yes

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title = "Singlet excited state (S1) of higher fullerenes C76 and C84: Correlation between lifetime and HOMO-LUMO energy gap",

abstract = "Photophysical properties of higher fullerenes C76 and C84 were investigated in toluene by steady-state and transient absorption spectroscopy. Lifetimes of 75 and 35 ps were measured for the lowest excited state of C76 and C84, respectively, which are much shorter than the values estimated from previous triplet-triplet absorption studies. It was found that the internal conversion rate constants, kIC, increased as the size of fullerene increased, and that kIC was strongly correlated with the HOMO-LUMO energy gap, ΔEg. From this correlation, an empirical relationship was obtained: log kIC (s-1)=14.59 - 3.39 ΔEg (eV).",

author = "Cho, \{Hyun Sun\} and Ahn, \{Tae Kyu\} and Yang, \{Sung Ik\} and Jin, \{Seung Min\} and Dongho Kim and Kim, \{Seong Keun\} and Kim, \{Hong Doo\}",

year = "2003",

month = jul,

day = "3",

doi = "10.1016/S0009-2614(03)00845-5",

language = "English",

volume = "375",

pages = "292--298",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier B.V.",

number = "3-4",

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TY - JOUR

T1 - Singlet excited state (S1) of higher fullerenes C76 and C84

T2 - Correlation between lifetime and HOMO-LUMO energy gap

AU - Cho, Hyun Sun

AU - Ahn, Tae Kyu

AU - Yang, Sung Ik

AU - Jin, Seung Min

AU - Kim, Dongho

AU - Kim, Seong Keun

AU - Kim, Hong Doo

PY - 2003/7/3

Y1 - 2003/7/3

N2 - Photophysical properties of higher fullerenes C76 and C84 were investigated in toluene by steady-state and transient absorption spectroscopy. Lifetimes of 75 and 35 ps were measured for the lowest excited state of C76 and C84, respectively, which are much shorter than the values estimated from previous triplet-triplet absorption studies. It was found that the internal conversion rate constants, kIC, increased as the size of fullerene increased, and that kIC was strongly correlated with the HOMO-LUMO energy gap, ΔEg. From this correlation, an empirical relationship was obtained: log kIC (s-1)=14.59 - 3.39 ΔEg (eV).

AB - Photophysical properties of higher fullerenes C76 and C84 were investigated in toluene by steady-state and transient absorption spectroscopy. Lifetimes of 75 and 35 ps were measured for the lowest excited state of C76 and C84, respectively, which are much shorter than the values estimated from previous triplet-triplet absorption studies. It was found that the internal conversion rate constants, kIC, increased as the size of fullerene increased, and that kIC was strongly correlated with the HOMO-LUMO energy gap, ΔEg. From this correlation, an empirical relationship was obtained: log kIC (s-1)=14.59 - 3.39 ΔEg (eV).

UR - https://www.scopus.com/pages/publications/0038543038

U2 - 10.1016/S0009-2614(03)00845-5

DO - 10.1016/S0009-2614(03)00845-5

M3 - Article

AN - SCOPUS:0038543038

SN - 0009-2614

VL - 375

SP - 292

EP - 298

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 3-4

ER -

Singlet excited state (S₁) of higher fullerenes C₇₆ and C₈₄: Correlation between lifetime and HOMO-LUMO energy gap

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