Electron photoejection from corannulene dianion and Li+-mediated recombination of the photogenerated species

Roy Shenhar; Itamar Willner; Dorin V. Preda; Lawrence T. Scott; Mordecai Rabinovitz

doi:10.1021/jp002344h

Electron photoejection from corannulene dianion and Li+-mediated recombination of the photogenerated species

Roy Shenhar
, Itamar Willner
, Dorin V. Preda
, Lawrence T. Scott
, Mordecai Rabinovitz^*

^*Corresponding author for this work

Institute of Chemistry

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

18 Scopus citations

Abstract

The antiaromatic corannulene dianion, Cor^2-, undergoes photoejection of an electron to yield an intimate cage complex of Cor^̇- and the electron. Part of the complex species undergoes cage recombination, k_rec¹ = 1.1 × 10⁶ s^-1, while the other part of complex separates, k_s = 2.3 × 10⁶ s^-1, and yields Cor^̇- and a Li⁺/e^- ion pair. Diffusional recombination of the later products proceeds with a bimolecular rate constant corresponding to k_rec² = 1.3 × 10⁹ M^-1 s^-1. Time-resolved laser flash-photolysis and FT-EPR experiments are used to characterize the transient species.

Original language	English
Pages (from-to)	10631-10636
Number of pages	6
Journal	Journal of Physical Chemistry A
Volume	104
Issue number	46
DOIs	https://doi.org/10.1021/jp002344h
State	Published - 23 Nov 2000

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title = "Electron photoejection from corannulene dianion and Li+-mediated recombination of the photogenerated species",

abstract = "The antiaromatic corannulene dianion, Cor2-, undergoes photoejection of an electron to yield an intimate cage complex of Co{\.r}- and the electron. Part of the complex species undergoes cage recombination, krec1 = 1.1 × 106 s-1, while the other part of complex separates, ks = 2.3 × 106 s-1, and yields Co{\.r}- and a Li+/e- ion pair. Diffusional recombination of the later products proceeds with a bimolecular rate constant corresponding to krec2 = 1.3 × 109 M-1 s-1. Time-resolved laser flash-photolysis and FT-EPR experiments are used to characterize the transient species.",

author = "Roy Shenhar and Itamar Willner and Preda, \{Dorin V.\} and Scott, \{Lawrence T.\} and Mordecai Rabinovitz",

year = "2000",

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doi = "10.1021/jp002344h",

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T1 - Electron photoejection from corannulene dianion and Li+-mediated recombination of the photogenerated species

AU - Shenhar, Roy

AU - Willner, Itamar

AU - Preda, Dorin V.

AU - Scott, Lawrence T.

AU - Rabinovitz, Mordecai

PY - 2000/11/23

Y1 - 2000/11/23

N2 - The antiaromatic corannulene dianion, Cor2-, undergoes photoejection of an electron to yield an intimate cage complex of Coṙ- and the electron. Part of the complex species undergoes cage recombination, krec1 = 1.1 × 106 s-1, while the other part of complex separates, ks = 2.3 × 106 s-1, and yields Coṙ- and a Li+/e- ion pair. Diffusional recombination of the later products proceeds with a bimolecular rate constant corresponding to krec2 = 1.3 × 109 M-1 s-1. Time-resolved laser flash-photolysis and FT-EPR experiments are used to characterize the transient species.

AB - The antiaromatic corannulene dianion, Cor2-, undergoes photoejection of an electron to yield an intimate cage complex of Coṙ- and the electron. Part of the complex species undergoes cage recombination, krec1 = 1.1 × 106 s-1, while the other part of complex separates, ks = 2.3 × 106 s-1, and yields Coṙ- and a Li+/e- ion pair. Diffusional recombination of the later products proceeds with a bimolecular rate constant corresponding to krec2 = 1.3 × 109 M-1 s-1. Time-resolved laser flash-photolysis and FT-EPR experiments are used to characterize the transient species.

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AN - SCOPUS:0034323439

SN - 1089-5639

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EP - 10636

JO - Journal of Physical Chemistry A

JF - Journal of Physical Chemistry A

IS - 46

ER -

Electron photoejection from corannulene dianion and Li+-mediated recombination of the photogenerated species

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