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

Department of Chemistry

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

21 Citations (Scopus)

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
Publication status	Published - 2003 Jul 3

Bibliographical note

Funding Information:
This work was supported by the National Creative Research Initiatives Program and the National R&D Project for Nano Science and Technology of the Ministry of Science and Technology of Korea.

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)
Physical and Theoretical Chemistry

Access to Document

10.1016/S0009-2614(03)00845-5

Cite this

@article{f75ad8cf272f488488d589192021e479,

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}",

note = "Funding Information: This work was supported by the National Creative Research Initiatives Program and the National R&D Project for Nano Science and Technology of the Ministry of Science and Technology of Korea.",

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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

N1 - Funding Information: This work was supported by the National Creative Research Initiatives Program and the National R&D Project for Nano Science and Technology of the Ministry of Science and Technology of Korea.

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).

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